G01S1/00	7	Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith (position fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00)	G01S1/00	G01S1/00		320
G01S1/02	8	using radio waves (G01S19/00 takes precedence)	G01S1/02	G01S1/02		7654
G01S1/022	9	{Means for monitoring or calibrating}	G01S1/02	G01S1/02		198
G01S1/024	10	{of beacon transmitters}	G01S1/02	G01S1/02		286
G01S1/026	10	{of associated receivers}	G01S1/02	G01S1/02		292
G01S1/028	10	{Simulation means, e.g. of beacon signals therefor (for teaching or training purposes G09B9/00)}	G01S1/02	G01S1/02		63
G01S1/04	9	Details	G01S1/04	G01S1/04		230
G01S1/042	10	{Transmitters}	G01S1/04	G01S1/04		433
G01S1/0423	11	{Mounting or deployment thereof}	G01S1/04	G01S1/04		186
G01S1/0426	12	{Collocated with electrical equipment other than beacons }	G01S1/04	G01S1/04		40
G01S1/0428	11	{Signal details}	G01S1/04	G01S1/04		436
G01S1/045	10	{Receivers}	G01S1/04	G01S1/04		327
G01S1/047	10	{Displays or indicators (G01S1/06 takes precedence)}	G01S1/04	G01S1/04		126
G01S1/06	10	Means for providing multiple indication, e.g. coarse and fine indications	G01S1/06	G01S1/06		28
G01S1/08	9	Systems for determining direction or position line	G01S1/08	G01S1/08		612
G01S1/10	10	using amplitude comparison of signals transmitted sequentially from antennas or antenna systems having differently-oriented overlapping directivity characteristics, e.g. equi-signal A-N type	G01S1/10	G01S1/10		39
G01S1/12	11	the signals being transmitted sequentially from an antenna or antenna system having the orientation of its directivity characteristic periodically varied, e.g. by means of sequentially effective reflectors	G01S1/12	G01S1/12		19
G01S1/14	10	using amplitude comparison of signals transmitted simultaneously from antennas or antenna systems having differently oriented overlapping directivity-characteristics	G01S1/14	G01S1/14		159
G01S1/16	11	Azimuthal guidance systems, e.g. system for defining aircraft approach path, localiser system	G01S1/16	G01S1/16		66
G01S1/18	11	Elevational guidance systems, e.g. system for defining aircraft glide path	G01S1/18	G01S1/18		46
G01S1/20	10	using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems	G01S1/20	G01S1/20		277
G01S1/22	11	the synchronised signals being frequency modulations on carrier waves and the transit times being compared by measuring difference of instantaneous frequencies of received carrier waves	G01S1/22	G01S1/22		44
G01S1/24	11	the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations {, e.g. LORAN systems}	G01S1/24	G01S1/24		270
G01S1/245	12	{Details of receivers cooperating therewith, e.g. determining positive zero crossing of third cycle in LORAN-C}	G01S1/24	G01S1/24		242
G01S1/26	12	Systems in which pulses or time-base signals are generated locally at the receiver and brought into predetermined time-relationship with received signals, e.g. pulse duration coincides with time interval between arrival of significant part of modulation of signals received from first and second antennas or antenna systems	G01S1/26	G01S1/26		3
G01S1/28	13	wherein the predetermined time-relationship is maintained automatically {contains no documents}	G01S1/28	G01S1/28		1
G01S1/30	11	the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference	G01S1/30	G01S1/30		189
G01S1/302	12	{Systems in which the direction is determined by using an interferometric type transmitting antenna array}	G01S1/30	G01S1/30		30
G01S1/304	12	{Analogous systems in which a beat frequency, obtained by heterodyning the signals, is compared in phase with a reference signal obtained by heterodyning the signals in a fixed reference point and transmitted therefrom, e.g. LORAC (long range accuracy) or TORAN systems}	G01S1/30	G01S1/30		96
G01S1/306	12	{Analogous systems in which frequency-related signals (harmonics) are compared in phase, e.g. DECCA systems}	G01S1/30	G01S1/30		73
G01S1/308	12	{particularly adapted to Omega systems}	G01S1/30	G01S1/30		68
G01S1/32	12	Systems in which the signals received, with or without amplification, or signals derived therefrom, are compared in phase directly {contains no documents}	G01S1/32	G01S1/32		16
G01S1/34	12	Systems in which first and second synchronised signals are transmitted from both antennas or antenna systems and a beat frequency, obtained by heterodyning the first signals with each other is compared in phase with a beat frequency obtained by heterodyning the second signals with each other	G01S1/34	G01S1/34		
G01S1/36	12	Systems in which a beat frequency, obtained by heterodyning the synchronised signals, is compared in phase with a reference signal having a phase substantially independent of direction {contains no documents}	G01S1/36	G01S1/36		3
G01S1/38	10	using comparison of [1] the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an antenna moving, or appearing to move, in a cyclic path with [2] the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the antenna	G01S1/38	G01S1/38		53
G01S1/40	11	the apparent movement of the antenna being produced by cyclic sequential energisation of fixed antennas	G01S1/40	G01S1/40		162
G01S1/42	10	Conical-scan beacons transmitting signals which indicate at a mobile receiver any displacement of the receiver from the conical-scan axis, e.g. for "beam-riding" missile control	G01S1/42	G01S1/42		32
G01S1/44	10	Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation	G01S1/44	G01S1/44		73
G01S1/46	11	Broad-beam systems producing at a receiver a substantially continuous sinusoidal envelope signal of the carrier wave of the beam, the phase angle of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon, e.g. cardioid system	G01S1/46	G01S1/46		28
G01S1/465	12	{using time-varying interference fields}	G01S1/46	G01S1/46		22
G01S1/48	12	wherein the phase angle of the direction-dependent envelope signal is a multiple of the direction angle, e.g. for "fine" bearing indication {TACAN}	G01S1/48	G01S1/48		30
G01S1/50	12	wherein the phase angle of the direction-dependent envelope signal is compared with a non-direction-dependent reference signal, {e.g. VOR}	G01S1/50	G01S1/50		58
G01S1/52	12	wherein the phase angles of a plurality of direction-dependent envelope signals produced by a plurality of beams rotating at different speeds or in different directions are compared	G01S1/52	G01S1/52		
G01S1/54	11	Narrow-beam systems producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon; Overlapping broad beam systems defining a narrow zone and producing at a receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon	G01S1/54	G01S1/54		71
G01S1/56	12	Timing the pulse-type envelope signals derived by reception of the beam	G01S1/56	G01S1/56		77
G01S1/58	12	wherein a characteristic of the beam transmitted or of an auxiliary signal is varied in time synchronously with rotation or oscillation of the beam	G01S1/58	G01S1/58		6
G01S1/60	13	Varying frequency of beam signal or of auxiliary signal	G01S1/60	G01S1/60		11
G01S1/62	13	Varying phase-relationship between beam and auxiliary signal	G01S1/62	G01S1/62		3
G01S1/64	13	Varying pulse timing, e.g. varying interval between pulses radiated in pairs	G01S1/64	G01S1/64		15
G01S1/66	13	Superimposing direction-indicating intelligence signals, e.g. speech, Morse	G01S1/66	G01S1/66		16
G01S1/68	9	Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information	G01S1/68	G01S1/68		1265
G01S1/685	10	{using pulse modulation, e.g. pulse frequency modulation}	G01S1/68	G01S1/68		72
G01S1/70	8	using electromagnetic waves other than radio waves	G01S1/70	G01S1/70		247
G01S1/703	9	{Details}	G01S1/70	G01S1/70		24
G01S1/7032	10	{Transmitters}	G01S1/70	G01S1/70		120
G01S1/7034	11	{Mounting or deployment thereof}	G01S1/70	G01S1/70		163
G01S1/7036	12	{Collocated with electrical equipment other than beacons}	G01S1/70	G01S1/70		30
G01S1/7038	11	{Signal details}	G01S1/70	G01S1/70		164
G01S1/705	9	{using gamma or X-rays}	G01S1/70	G01S1/70		2
G01S1/72	8	using ultrasonic, sonic or infrasonic waves	G01S1/72	G01S1/72		2586
G01S1/725	9	{Marker, boundary, call-sign or like beacons transmitting signals not carrying directional information}	G01S1/72	G01S1/72		156
G01S1/74	9	Details	G01S1/74	G01S1/74		48
G01S1/75	10	{Transmitters}	G01S1/74	G01S1/75		35
G01S1/751	11	{Mounting or deployment thereof}	G01S1/74	G01S1/751		37
G01S1/752	12	{Collocated with electrical equipment other than beacons }	G01S1/74	G01S1/752		7
G01S1/753	11	{Signal details}	G01S1/74	G01S1/753		57
G01S1/76	9	Systems for determining direction or position line	G01S1/76	G01S1/76		136
G01S1/763	10	{using the Doppler shift introduced by the relative motion between beacon and receiver}	G01S1/76	G01S1/76		17
G01S1/766	10	{Conical-scan beam beacons transmitting signals which indicate at a mobile receiver any displacement of the receiver from the conical-scan axis}	G01S1/76	G01S1/76		3
G01S1/78	10	using amplitude comparison of signals transmitted from transducers or transducer systems having differently-oriented characteristics	G01S1/78	G01S1/78		5
G01S1/783	11	{the signals being transmitted sequentially}	G01S1/78	G01S1/78		2
G01S1/786	11	{the signals being transmitted simultaneously}	G01S1/78	G01S1/78		5
G01S1/80	10	using a comparison of transit time of synchronised signals transmitted from non-directional transducers or transducer systems spaced apart, i.e. path-difference systems	G01S1/80	G01S1/80		38
G01S1/802	11	{the synchronised signals being frequency modulations on carrier waves and the transit times being compared by measuring difference of instantaneous frequencies of received carrier waves}	G01S1/80	G01S1/80		6
G01S1/805	11	{the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations}	G01S1/80	G01S1/80		20
G01S1/807	11	{the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference}	G01S1/80	G01S1/80		7
G01S1/82	10	Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation	G01S1/82	G01S1/82		13
G01S3/00	7	Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received (position-fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00)	G01S3/00	G01S3/00		306
G01S3/02	8	using radio waves	G01S3/02	G01S3/02		281
G01S3/023	9	{Monitoring or calibrating}	G01S3/02	G01S3/02		479
G01S3/026	10	{Simulating means therefor}	G01S3/02	G01S3/02		37
G01S3/04	9	Details	G01S3/04	G01S3/04		256
G01S3/043	10	{Receivers}	G01S3/04	G01S3/04		713
G01S3/046	10	{Displays or indicators}	G01S3/04	G01S3/04		148
G01S3/06	10	Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna (comparing amplitude of signals having differently oriented directivity characteristics to determine direction G01S3/16, G01S3/28)	G01S3/06	G01S3/06		249
G01S3/065	11	{by using non-directional aerial}	G01S3/06	G01S3/06		146
G01S3/08	10	Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems	G01S3/08	G01S3/08		257
G01S3/085	11	{by using spaced loop aerial systems}	G01S3/08	G01S3/08		79
G01S3/10	10	Means for reducing or compensating for quadrantal, site, or like errors	G01S3/10	G01S3/10		245
G01S3/12	10	Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna (determining direction by amplitude comparison of signals derived by combining directional and non-directional signals G01S3/24, G01S3/34)	G01S3/12	G01S3/12		424
G01S3/14	9	Systems for determining direction or deviation from predetermined direction {(aerial arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00; combinations of different interacting aerial units for giving a desired directional characteristic H01Q21/29; aerials or aerial systems providing at least two radiation patterns H01Q25/00)}	G01S3/14	G01S3/14		2247
G01S3/143	10	{by vectorial combination of signals derived from differently oriented antennae}	G01S3/14	G01S3/14		676
G01S3/146	10	{by comparing linear polarisation components}	G01S3/14	G01S3/14		104
G01S3/16	10	using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic	G01S3/16	G01S3/16		155
G01S3/18	11	derived directly from separate directional antennas	G01S3/18	G01S3/18		76
G01S3/20	11	derived by sampling signal received by an antenna system having periodically-varied orientation of directivity characteristic	G01S3/20	G01S3/20		85
G01S3/22	11	derived from different combinations of signals from separate antennas, e.g. comparing sum with difference	G01S3/22	G01S3/22		53
G01S3/24	12	the separate antennas comprising one directional antenna and one non-directional antenna, e.g. combination of loop and open antennas producing a reversed cardioid directivity characteristic	G01S3/24	G01S3/24		12
G01S3/26	12	the separate antennas having differently-oriented directivity characteristics	G01S3/26	G01S3/26		26
G01S3/28	10	using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics	G01S3/28	G01S3/28		254
G01S3/30	11	derived directly from separate directional systems	G01S3/30	G01S3/30		145
G01S3/32	11	derived from different combinations of signals from separate antennas, e.g. comparing sum with difference	G01S3/32	G01S3/32		150
G01S3/325	12	{Automatic tracking systems}	G01S3/32	G01S3/32		97
G01S3/34	12	the separate antennas comprising one directional antenna and one non-directional antenna, e.g. combination of loop and open antennas producing a reversed cardioid directivity characteristic	G01S3/34	G01S3/34		13
G01S3/36	12	the separate antennas having differently-oriented directivity characteristics	G01S3/36	G01S3/36		50
G01S3/38	10	using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal (G01S3/16, G01S3/28 take precedence)	G01S3/38	G01S3/38		188
G01S3/40	11	adjusting orientation of a single directivity characteristic to produce maximum or minimum signal, e.g. rotatable loop antenna or equivalent goniometer system	G01S3/40	G01S3/40		113
G01S3/42	11	the desired condition being maintained automatically	G01S3/42	G01S3/42		405
G01S3/44	11	the adjustment being varied periodically or continuously until it is halted automatically when the desired condition is attained	G01S3/44	G01S3/44		57
G01S3/46	10	using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems	G01S3/46	G01S3/46		1015
G01S3/465	11	{the waves arriving at the aerials being frequency modulated and the frequency difference of signals therefrom being measured}	G01S3/46	G01S3/46		64
G01S3/48	11	the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured	G01S3/48	G01S3/48		1069
G01S3/50	11	the waves arriving at the antennas being pulse modulated and the time difference of their arrival being measured	G01S3/50	G01S3/50		181
G01S3/52	10	using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal	G01S3/52	G01S3/52		91
G01S3/54	11	the apparent movement of the antenna being produced by coupling the receiver cyclically and sequentially to each of several fixed spaced antennas	G01S3/54	G01S3/54		107
G01S3/56	10	Conical-scan beam systems using signals indicative of the deviation of the direction of reception from the scan axis	G01S3/56	G01S3/56		42
G01S3/58	10	Rotating or oscillating beam systems using continuous analysis of received signal for determining direction in the plane of rotation or oscillation or for determining deviation from a predetermined direction in such a plane (G01S3/16 takes precedence)	G01S3/58	G01S3/58		58
G01S3/60	11	Broad-beam systems producing in the receiver a substantially sinusoidal envelope signal of the carrier wave of the beam, the phase angle of which is dependent upon the angle between the direction of the transmitter from the receiver and a reference direction from the receiver, e.g. cardioid system	G01S3/60	G01S3/60		19
G01S3/62	12	wherein the phase angle of the signal is indicated by a cathode-ray tube	G01S3/62	G01S3/62		11
G01S3/64	12	wherein the phase angle of the signal is determined by phase comparison with a reference alternating signal varying in synchronism with the directivity variation	G01S3/64	G01S3/64		14
G01S3/66	11	Narrow-beam systems producing in the receiver a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the transmitter from the receiver and a reference direction from the receiver; Overlapping broad-beam systems defining in the receiver a narrow zone and producing a pulse-type envelope signal of the carrier wave of the beam, the timing of which is dependent upon the angle between the direction of the transmitter from the receiver and a reference direction from the receiver	G01S3/66	G01S3/66		25
G01S3/68	12	wherein the timing of the pulse-type envelope signal is indicated by cathode-ray tube	G01S3/68	G01S3/68		11
G01S3/70	12	wherein the timing of the pulse-type envelope signal is determined by bringing a locally-generated pulse-type signal into coincidence or other predetermined time-relationship with the envelope signal	G01S3/70	G01S3/70		1
G01S3/72	9	Diversity systems specially adapted for direction-finding	G01S3/72	G01S3/72		139
G01S3/74	9	Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals (systems in which the directions of different signals are determined sequentially and displayed simultaneously G01S3/04, G01S3/14)	G01S3/74	G01S3/74		739
G01S3/78	8	using electromagnetic waves other than radio waves	G01S3/78	G01S3/78		263
G01S3/7803	9	{Means for monitoring or calibrating}	G01S3/78	G01S3/78		109
G01S3/7806	9	{using gamma or X-rays}	G01S3/78	G01S3/78		11
G01S3/781	9	Details	G01S3/781	G01S3/781		570
G01S3/782	9	Systems for determining direction or deviation from predetermined direction	G01S3/782	G01S3/782		508
G01S3/783	10	using amplitude comparison of signals derived from static detectors or detector systems	G01S3/783	G01S3/783		485
G01S3/7835	11	{using coding masks}	G01S3/783	G01S3/783		80
G01S3/784	11	using a mosaic of detectors	G01S3/784	G01S3/784		619
G01S3/785	10	using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system	G01S3/785	G01S3/785		65
G01S3/786	11	the desired condition being maintained automatically	G01S3/786	G01S3/786		405
G01S3/7861	12	{Solar tracking systems}	G01S3/786	G01S3/786		663
G01S3/7862	13	{mounted on a moving platform, e.g. space vehicle}	G01S3/786	G01S3/786		79
G01S3/7864	12	{T.V. type tracking systems}	G01S3/786	G01S3/786		880
G01S3/7865	13	{using correlation of the live video image with a stored image}	G01S3/786	G01S3/786		263
G01S3/7867	12	{Star trackers (navigation using star trackers G01C21/025)}	G01S3/786	G01S3/786		287
G01S3/7868	12	{using horizon sensors}	G01S3/786	G01S3/786		89
G01S3/787	10	using rotating reticles producing a direction-dependent modulation characteristic	G01S3/787	G01S3/787		203
G01S3/788	11	producing a frequency modulation characteristic	G01S3/788	G01S3/788		45
G01S3/789	10	using rotating or oscillating beam systems, e.g. using mirrors, prisms	G01S3/789	G01S3/789		260
G01S3/80	8	using ultrasonic, sonic or infrasonic waves	G01S3/80	G01S3/80		587
G01S3/8003	9	{Diversity systems specially adapted for direction finding}	G01S3/80	G01S3/80		63
G01S3/8006	9	{Multi-channel systems specially adapted for direction-finding, i.e. having a single aerial system capable of giving simultaneous indications of the directions of different signals}	G01S3/80	G01S3/80		266
G01S3/801	9	Details {(G01S3/82, G01S3/84, G01S3/86 take precedence)}	G01S3/801	G01S3/801		433
G01S3/802	9	Systems for determining direction or deviation from predetermined direction	G01S3/802	G01S3/802		587
G01S3/8022	10	{using the Doppler shift introduced by the relative motion between source and receiver}	G01S3/802	G01S3/802		60
G01S3/8025	10	{Conical-scan beam systems using signals indicative of the deviation of the direction of reception from the scan axis}	G01S3/802	G01S3/802		4
G01S3/8027	10	{By vectorial composition of signals received by plural, differently-oriented transducers}	G01S3/802	G01S3/802		104
G01S3/803	10	using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics	G01S3/803	G01S3/803		112
G01S3/8032	11	{wherein the signals are derived sequentially}	G01S3/803	G01S3/803		26
G01S3/8034	11	{wherein the signals are derived simultaneously}	G01S3/803	G01S3/803		76
G01S3/8036	12	{derived directly from separate directional systems}	G01S3/803	G01S3/803		64
G01S3/8038	12	{derived from different combinations of signals from separate transducers comparing sum with difference}	G01S3/803	G01S3/803		29
G01S3/805	10	using adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal	G01S3/805	G01S3/805		89
G01S3/8055	11	{adjusting orientation of a single directivity characteristic to produce maximum or minimum signal}	G01S3/805	G01S3/805		30
G01S3/807	11	the desired condition being maintained automatically	G01S3/807	G01S3/807		28
G01S3/808	10	using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems	G01S3/808	G01S3/808		425
G01S3/8083	11	{determining direction of source}	G01S3/808	G01S3/808		748
G01S3/8086	11	{determining other position line of source}	G01S3/808	G01S3/808		70
G01S3/809	10	Rotating or oscillating beam systems using continuous analysis of received signal for determining direction in the plane of rotation or oscillation or for determining deviation from a predetermined direction in such a plane	G01S3/809	G01S3/809		46
G01S3/82	9	with means for adjusting phase or compensating for time-lag errors	G01S3/82	G01S3/82		62
G01S3/84	9	with indication presented on cathode-ray tubes	G01S3/84	G01S3/84		25
G01S3/86	9	with means for eliminating undesired waves, e.g. disturbing noises	G01S3/86	G01S3/86		205
G01S5/00	7	Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations {(using active systems G01S13/00, G01S15/00, G01S17/00)}	G01S5/00	G01S5/00		616
G01S5/0009	8	{Transmission of position information to remote stations (involving assistance data G01S5/0236)}	G01S5/00	G01S5/00		1458
G01S5/0018	9	{Transmission from mobile station to base station}	G01S5/00	G01S5/00		548
G01S5/0027	10	{of actual mobile position, i.e. position determined on mobile}	G01S5/00	G01S5/00		2125
G01S5/0036	10	{of measured values, i.e. measurement on mobile and position calculation on base station}	G01S5/00	G01S5/00		1731
G01S5/0045	9	{Transmission from base station to mobile station (G01S5/009 takes precedence)}	G01S5/00	G01S5/00		380
G01S5/0054	10	{of actual mobile position, i.e. position calculation on base station}	G01S5/00	G01S5/00		317
G01S5/0063	10	{of measured values, i.e. measurement on base station and position calculation on mobile}	G01S5/00	G01S5/00		321
G01S5/0072	9	{Transmission between mobile stations, e.g. anti-collision systems}	G01S5/00	G01S5/00		1366
G01S5/0081	9	{Transmission between base stations}	G01S5/00	G01S5/00		419
G01S5/009	9	{Transmission of differential positioning data to mobile}	G01S5/00	G01S5/00		230
G01S5/01	8	{Determining conditions which influence positioning, e.g. radio environment, state of motion or energy consumption}	G01S5/00	G01S5/01		332
G01S5/011	9	{Identifying the radio environment}	G01S5/00	G01S5/011		398
G01S5/012	9	{Identifying whether indoors or outdoors}	G01S5/00	G01S5/012		168
G01S5/013	9	{Identifying areas in a building}	G01S5/00	G01S5/013		84
G01S5/014	9	{Identifying transitions between environments}	G01S5/00	G01S5/014		69
G01S5/015	10	{between indoor and outdoor environments}	G01S5/00	G01S5/015		99
G01S5/016	10	{between areas within a building}	G01S5/00	G01S5/016		38
G01S5/017	9	{Detecting state or type of motion}	G01S5/00	G01S5/017		395
G01S5/018	9	{Involving non-radio wave signals or measurements}	G01S5/00	G01S5/018		93
G01S5/019	9	{Energy consumption}	G01S5/00	G01S5/019		167
G01S5/02	8	using radio waves (using satellite radio beacon systems for determining position G01S19/00)	G01S5/02	G01S5/02		3377
G01S5/0205	9	{Details}	G01S5/02	G01S5/02		1521
G01S5/021	10	{Calibration, monitoring or correction (G01S5/0252 takes precedence)}	G01S5/02	G01S5/02		2014
G01S5/0215	10	{Interference}	G01S5/02	G01S5/02		379
G01S5/0218	10	{Multipath in signal reception}	G01S5/02	G01S5/02		660
G01S5/0221	10	{Receivers}	G01S5/02	G01S5/02		609
G01S5/02213	11	{Receivers arranged in a network for determining the position of a transmitter}	G01S5/02	G01S5/02		442
G01S5/02216	12	{Timing or synchronisation of the receivers}	G01S5/02	G01S5/02		278
G01S5/0226	10	{Transmitters}	G01S5/02	G01S5/02		808
G01S5/0231	11	{Emergency, distress or locator beacons}	G01S5/02	G01S5/02		317
G01S5/0236	10	{Assistance data, e.g. base station almanac}	G01S5/02	G01S5/02		1739
G01S5/0242	10	{Determining the position of transmitters to be subsequently used in positioning (G01S5/0289 takes precedence)}	G01S5/02	G01S5/02		498
G01S5/0244	10	{Accuracy or reliability of position solution or of measurements contributing thereto}	G01S5/02	G01S5/02		1018
G01S5/0246	9	{involving frequency difference of arrival or Doppler measurements (G01S5/02685 takes precedence)}	G01S5/02	G01S5/02		261
G01S5/0247	9	{Determining attitude}	G01S5/02	G01S5/02		518
G01S5/0249	9	{Determining position using measurements made by a non-stationary device other than the device whose position is being determined}	G01S5/02	G01S5/02		471
G01S5/0252	9	{Radio frequency fingerprinting}<br><br><u>NOTE</u><br><br>In this group, the following terms are used with the meaning indicated:<br> Radio frequency fingerprints mean measurements or simulated values of radio frequency signal parameters, e.g. receiver signal strength indicator [RSSI] or identifiers or access point identifiers [ApIds] combined with coordinates of the positions at which the radio frequency fingerprints were measured.<br>"Radio-map" means a collection of radio frequency fingerprints.	G01S5/02	G01S5/02		1445
G01S5/02521	10	{using a radio-map}	G01S5/02	G01S5/02		862
G01S5/02522	11	{The radio-map containing measured values of non-radio values}	G01S5/02	G01S5/02		103
G01S5/02523	11	{Details of interaction of receiver with radio-map}	G01S5/02	G01S5/02		76
G01S5/02524	11	{Creating or updating the radio-map}	G01S5/02	G01S5/02		362
G01S5/02525	12	{Gathering the radio frequency fingerprints}	G01S5/02	G01S5/02		244
G01S5/02526	13	{using non-dedicated equipment, e.g. user equipment or crowd-sourcing}	G01S5/02	G01S5/02		203
G01S5/02527	12	{Detecting or resolving anomalies in the radio frequency fingerprints of the radio-map}	G01S5/02	G01S5/02		132
G01S5/02528	10	{Simulating radio frequency fingerprints}	G01S5/02	G01S5/02		89
G01S5/02529	10	{not involving signal parameters, i.e. only involving identifiers}	G01S5/02	G01S5/02		143
G01S5/0257	9	{Hybrid positioning (by coordinating position lines of different shape G01S5/12)}	G01S5/02	G01S5/02		807
G01S5/0258	10	{by combining or switching between measurements derived from different systems}	G01S5/02	G01S5/02		161
G01S5/02585	11	{at least one of the measurements being a non-radio measurement}	G01S5/02	G01S5/02		477
G01S5/0263	10	{by combining or switching between positions derived from two or more separate positioning systems}	G01S5/02	G01S5/02		564
G01S5/0264	11	{at least one of the systems being a non-radio wave positioning system}	G01S5/02	G01S5/02		523
G01S5/0268	10	{by deriving positions from different combinations of signals or of estimated positions in a single positioning system}	G01S5/02	G01S5/02		483
G01S5/02685	11	{involving dead reckoning based on radio wave measurements}	G01S5/02	G01S5/02		52
G01S5/0269	9	{Inferred or constrained positioning, e.g. employing knowledge of the physical or electromagnetic environment, state of motion or other contextual information to infer or constrain a position}	G01S5/02	G01S5/02		297
G01S5/02695	10	{Constraining the position to lie on a curve or surface}	G01S5/02	G01S5/02		80
G01S5/0273	9	{using multipath or indirect path propagation signals in position determination}	G01S5/02	G01S5/02		785
G01S5/0278	9	{involving statistical or probabilistic considerations (G01S5/0252, G01S5/0294 take precedence)}	G01S5/02	G01S5/02		1371
G01S5/0284	9	{Relative positioning}	G01S5/02	G01S5/02		1893
G01S5/0289	10	{of multiple transceivers, e.g. in ad hoc networks}	G01S5/02	G01S5/02		1135
G01S5/0294	9	{Trajectory determination or predictive filtering, e.g. target tracking or Kalman filtering}	G01S5/02	G01S5/02		1389
G01S5/0295	9	{Proximity-based methods, e.g. position inferred from reception of particular signals}	G01S5/02	G01S5/02		704
G01S5/02955	10	{by computing a weighted average of the positions of the signal transmitters}	G01S5/02	G01S5/02		57
G01S5/04	9	Position of source determined by a plurality of spaced direction-finders	G01S5/04	G01S5/04		1646
G01S5/06	9	Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements (G01S5/12 takes precedence)	G01S5/06	G01S5/06		2839
G01S5/08	9	Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location	G01S5/08	G01S5/08		603
G01S5/10	9	Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements {, e.g. omega or decca systems}(G01S5/12 takes precedence {; beacons and receivers cooperating therewith G01S1/306, G01S1/308})	G01S5/10	G01S5/10		2148
G01S5/12	9	by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical&#160;or radial	G01S5/12	G01S5/12		1525
G01S5/14	9	Determining absolute distances from a plurality of spaced points of known location	G01S5/14	G01S5/14		3912
G01S5/145	10	{Using a supplementary range measurement, e.g. based on pseudo-range measurements}	G01S5/14	G01S5/14		267
G01S5/16	8	using electromagnetic waves other than radio waves	G01S5/16	G01S5/16		3166
G01S5/163	9	{Determination of attitude (using inertial means G01C9/00; control of attitude G05D1/49)}	G01S5/16	G01S5/16		761
G01S5/166	9	{using gamma or X-rays}	G01S5/16	G01S5/16		25
G01S5/18	8	using ultrasonic, sonic or infrasonic waves	G01S5/18	G01S5/18		2348
G01S5/183	9	{Emergency, distress or locator beacons}	G01S5/18	G01S5/18		80
G01S5/186	9	{Determination of attitude (using inertial means G01C9/00; control of attitude G05D1/49)}	G01S5/18	G01S5/18		178
G01S5/20	9	Position of source determined by a plurality of spaced direction-finders	G01S5/20	G01S5/20		968
G01S5/22	9	Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements (G01S5/28 takes precedence)	G01S5/22	G01S5/22		1764
G01S5/24	9	Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location	G01S5/24	G01S5/24		105
G01S5/26	9	Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements (G01S5/28 takes precedence)	G01S5/26	G01S5/26		366
G01S5/28	9	by co-ordinating position lines of different shape, e.g. hyperbolic, circular, elliptical or radial	G01S5/28	G01S5/28		268
G01S5/30	9	Determining absolute distances from a plurality of spaced points of known location	G01S5/30	G01S5/30		784
G01S7/00	7	Details of systems according to groups G01S13/00, G01S15/00, G01S17/00	G01S7/00	G01S7/00		152
G01S7/003	8	{Transmission of data between radar, sonar or lidar systems and remote stations}	G01S7/00	G01S7/00		2877
G01S7/006	9	{using shared front-end circuitry, e.g. antennas (G01S13/765, G01S13/825 take precedence)}	G01S7/00	G01S7/00		2072
G01S7/02	8	of systems according to group G01S13/00	G01S7/02	G01S7/02		5693
G01S7/021	9	{Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals}	G01S7/02	G01S7/02		1957
G01S7/022	10	{Road traffic radar detectors}	G01S7/02	G01S7/02		269
G01S7/023	9	{Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques (auxiliary means for detecting or identifying radar signals or the like G01S7/021; means for anti-jamming G01S7/36)}	G01S7/02	G01S7/02		2153
G01S7/0231	10	{Avoidance by polarisation multiplex}	G01S7/02	G01S7/02		66
G01S7/0232	10	{Avoidance by frequency multiplex}	G01S7/02	G01S7/02		506
G01S7/0233	10	{Avoidance by phase multiplex}	G01S7/02	G01S7/02		154
G01S7/0234	10	{Avoidance by code multiplex}	G01S7/02	G01S7/02		277
G01S7/0235	10	{Avoidance by time multiplex}	G01S7/02	G01S7/02		428
G01S7/0236	10	{Avoidance by space multiplex}	G01S7/02	G01S7/02		152
G01S7/024	9	{using polarisation effects (in waveguides H01P1/165; for aerials H01Q, e.g. H01Q15/22, H01Q15/24, H01Q19/195)}	G01S7/02	G01S7/02		728
G01S7/025	10	{involving the transmission of linearly polarised waves}	G01S7/02	G01S7/02		459
G01S7/026	10	{involving the transmission of elliptically or circularly polarised waves}	G01S7/02	G01S7/02		229
G01S7/027	9	{Constructional details of housings, e.g. form, type, material or ruggedness}	G01S7/02	G01S7/02		1792
G01S7/028	10	{Miniaturisation, e.g. surface mounted device [SMD] packaging or housings}	G01S7/02	G01S7/02		309
G01S7/03	9	Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver	G01S7/03	G01S7/03		2693
G01S7/032	10	{Constructional details for solid-state radar subsystems}	G01S7/03	G01S7/03		1824
G01S7/034	10	{Duplexers (switching devices for waveguides H01P1/10; transmit-receive switching in transceivers H04B1/44)}	G01S7/03	G01S7/03		562
G01S7/036	11	{involving a transfer mixer}	G01S7/03	G01S7/03		79
G01S7/038	10	{Feedthrough nulling circuits}	G01S7/03	G01S7/03		364
G01S7/04	9	Display arrangements	G01S7/04	G01S7/04		914
G01S7/043	10	{Synchronising the display device with the scanning of the antenna}	G01S7/04	G01S7/04		60
G01S7/046	10	{using an intermediate storage device, e.g. a recording/reproducing device}	G01S7/04	G01S7/04		146
G01S7/06	10	Cathode-ray tube displays {or other two dimensional or three-dimensional displays}	G01S7/06	G01S7/06		495
G01S7/062	11	{in which different colours are used}	G01S7/06	G01S7/06		222
G01S7/064	11	{using a display memory for image processing (G01S7/298 takes precedence)}	G01S7/06	G01S7/06		122
G01S7/066	12	{with means for showing the history of the radar trails, e.g. artificial remanence}	G01S7/06	G01S7/06		34
G01S7/068	11	{with data-rate converters preceding the display, e.g. flicker free display, constant brightness display (G01S7/298 takes precedence)}	G01S7/06	G01S7/06		33
G01S7/08	11	with vernier indication of distance, e.g. using two cathode-ray tubes	G01S7/08	G01S7/08		54
G01S7/10	11	Providing two-dimensional [2D] co-ordinated display of distance and direction	G01S7/10	G01S7/10		263
G01S7/12	12	Plan-position indicators, i.e. P.P.I.	G01S7/12	G01S7/12		342
G01S7/14	13	Sector, off-centre, or expanded angle display	G01S7/14	G01S7/14		115
G01S7/16	12	Signals displayed as intensity modulation with rectangular co-ordinates representing distance and bearing, e.g. type B	G01S7/16	G01S7/16		45
G01S7/18	12	Distance-height displays; Distance-elevation displays, e.g. type RHI, type E	G01S7/18	G01S7/18		54
G01S7/20	11	Stereoscopic displays; Three-dimensional [3D] displays; Pseudo-3D displays	G01S7/20	G01S7/20		364
G01S7/22	11	Producing cursor lines and indicia by electronic means	G01S7/22	G01S7/22		639
G01S7/24	11	the display being orientated or displaced in accordance with movement of object carrying the transmitting and receiving apparatus, e.g. true-motion radar	G01S7/24	G01S7/24		238
G01S7/28	9	Details of pulse systems	G01S7/28	G01S7/28		1104
G01S7/2806	10	{Employing storage or delay devices which preserve the pulse form of the echo signal, e.g. for comparing and combining echoes received during different periods}	G01S7/28	G01S7/28		364
G01S7/2813	10	{Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays (specially adapted to secondary radar systems G01S13/762; aerials or aerials systems H01Q21/29, H01Q25/00)}	G01S7/28	G01S7/28		1142
G01S7/282	10	Transmitters	G01S7/282	G01S7/282		2145
G01S7/285	10	Receivers	G01S7/285	G01S7/285		1386
G01S7/288	11	Coherent receivers	G01S7/288	G01S7/288		507
G01S7/2883	12	{using FFT processing}	G01S7/288	G01S7/288		551
G01S7/2886	12	{using I/Q processing}	G01S7/288	G01S7/288		275
G01S7/292	11	Extracting wanted echo-signals	G01S7/292	G01S7/292		1750
G01S7/2921	12	{based on data belonging to one radar period}	G01S7/292	G01S7/292		429
G01S7/2922	13	{by using a controlled threshold}	G01S7/292	G01S7/292		322
G01S7/2923	12	{based on data belonging to a number of consecutive radar periods}	G01S7/292	G01S7/292		955
G01S7/2925	13	{by using shape of radiation pattern}	G01S7/292	G01S7/292		144
G01S7/2926	13	{by integration}	G01S7/292	G01S7/292		287
G01S7/2927	13	{by deriving and controlling a threshold value}	G01S7/292	G01S7/292		648
G01S7/2928	13	{Random or non-synchronous interference pulse cancellers}	G01S7/292	G01S7/292		141
G01S7/295	11	Means for transforming co-ordinates or for evaluating data, e.g. using computers	G01S7/295	G01S7/295		1056
G01S7/2955	12	{Means for determining the position of the radar coordinate system for evaluating the position data of the target in another coordinate system (G01S7/24 takes precedence; sighting devices adapted for indirect laying of fire F41G3/16; inertial navigation G01C21/16)}	G01S7/295	G01S7/295		186
G01S7/298	12	Scan converters	G01S7/298	G01S7/298		202
G01S7/32	11	Shaping echo pulse signals; Deriving non-pulse signals from echo pulse signals	G01S7/32	G01S7/32		210
G01S7/34	11	Gain of receiver varied automatically during pulse-recurrence period, e.g. anti-clutter gain control	G01S7/34	G01S7/34		462
G01S7/35	9	Details of non-pulse systems	G01S7/35	G01S7/35		1490
G01S7/352	10	{Receivers}	G01S7/35	G01S7/35		1474
G01S7/354	11	{Extracting wanted echo-signals (Doppler systems G01S13/50)}	G01S7/35	G01S7/35		1902
G01S7/356	11	{involving particularities of FFT processing}	G01S7/35	G01S7/35		1317
G01S7/358	11	{using I/Q processing}	G01S7/35	G01S7/35		363
G01S7/36	9	Means for anti-jamming {, e.g. ECCM, i.e. electronic counter-counter measures}	G01S7/36	G01S7/36		3854
G01S7/38	9	Jamming means, e.g. producing false echoes	G01S7/38	G01S7/38		1543
G01S7/40	9	Means for monitoring or calibrating	G01S7/40	G01S7/40		6696
G01S7/4004	10	{of parts of a radar system}	G01S7/40	G01S7/40		1860
G01S7/4008	11	{of transmitters}	G01S7/40	G01S7/40		970
G01S7/4013	12	{involving adjustment of the transmitted power}	G01S7/40	G01S7/40		228
G01S7/4017	11	{of HF systems}	G01S7/40	G01S7/40		290
G01S7/4021	11	{of receivers}	G01S7/40	G01S7/40		1449
G01S7/4026	11	{Antenna boresight}	G01S7/40	G01S7/40		1567
G01S7/403	12	{in azimuth, i.e. in the horizontal plane}	G01S7/40	G01S7/40		694
G01S7/4034	12	{in elevation, i.e. in the vertical plane}	G01S7/40	G01S7/40		507
G01S7/4039	11	{of sensor or antenna obstruction, e.g. dirt- or ice-coating}	G01S7/40	G01S7/40		341
G01S7/4043	12	{including means to prevent or remove the obstruction}	G01S7/40	G01S7/40		231
G01S7/4047	13	{Heated dielectric lens, e.g. by heated wire}	G01S7/40	G01S7/40		105
G01S7/4052	10	{by simulation of echoes}	G01S7/40	G01S7/40		2128
G01S7/4056	11	{specially adapted to FMCW}	G01S7/40	G01S7/40		414
G01S7/406	11	{using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder}	G01S7/40	G01S7/40		145
G01S7/4065	12	{involving a delay line}	G01S7/40	G01S7/40		219
G01S7/4069	12	{involving a RF signal injection}	G01S7/40	G01S7/40		184
G01S7/4073	12	{involving an IF signal injection}	G01S7/40	G01S7/40		56
G01S7/4078	12	{involving an integrated reference reflector or reference transponder}	G01S7/40	G01S7/40		96
G01S7/4082	11	{using externally generated reference signals, e.g. via remote reflector or transponder}	G01S7/40	G01S7/40		567
G01S7/4086	12	{in a calibrating environment, e.g. anechoic chamber}	G01S7/40	G01S7/40		518
G01S7/4091	12	{during normal radar operation}	G01S7/40	G01S7/40		516
G01S7/4095	12	{the external reference signals being modulated, e.g. rotating a dihedral reflector or modulating a transponder for simulation of a Doppler echo}	G01S7/40	G01S7/40		249
G01S7/41	9	using analysis of echo signal for target characterisation; Target signature; Target cross-section	G01S7/41	G01S7/41		8082
G01S7/411	10	{Identification of targets based on measurements of radar reflectivity (G01S7/415 takes precedence)}	G01S7/41	G01S7/41		2785
G01S7/412	11	{based on a comparison between measured values and known or stored values}	G01S7/41	G01S7/41		1162
G01S7/414	10	{Discriminating targets with respect to background clutter}	G01S7/41	G01S7/41		2892
G01S7/415	10	{Identification of targets based on measurements of movement associated with the target}	G01S7/41	G01S7/41		4056
G01S7/417	10	{involving the use of neural networks}	G01S7/41	G01S7/41		3007
G01S7/418	10	{Theoretical aspects}	G01S7/41	G01S7/41		1969
G01S7/42	9	Diversity systems specially adapted for radar	G01S7/42	G01S7/42		480
G01S7/48	8	of systems according to group G01S17/00	G01S7/48	G01S7/48		1654
G01S7/4802	9	{using analysis of echo signal for target characterisation; Target signature; Target cross-section}	G01S7/48	G01S7/48		5880
G01S7/4804	9	{Auxiliary means for detecting or identifying lidar signals or the like, e.g. laser illuminators}	G01S7/48	G01S7/48		451
G01S7/4806	10	{Road traffic laser detectors}	G01S7/48	G01S7/48		91
G01S7/4808	9	{Evaluating distance, position or velocity data}	G01S7/48	G01S7/48		3268
G01S7/481	9	Constructional features, e.g. arrangements of optical elements	G01S7/481	G01S7/481		6802
G01S7/4811	10	{common to transmitter and receiver}	G01S7/481	G01S7/481		2574
G01S7/4812	11	{transmitted and received beams following a coaxial path}	G01S7/481	G01S7/481		1314
G01S7/4813	11	{Housing arrangements}	G01S7/481	G01S7/481		3683
G01S7/4814	10	{of transmitters alone}	G01S7/481	G01S7/481		3461
G01S7/4815	11	{using multiple transmitters}	G01S7/481	G01S7/481		2704
G01S7/4816	10	{of receivers alone}	G01S7/481	G01S7/481		3966
G01S7/4817	10	{relating to scanning}	G01S7/481	G01S7/481		7160
G01S7/4818	10	{using optical fibres}	G01S7/481	G01S7/481		1547
G01S7/483	9	Details of pulse systems	G01S7/483	G01S7/483		939
G01S7/484	10	Transmitters	G01S7/484	G01S7/484		3551
G01S7/486	10	Receivers	G01S7/486	G01S7/486		1046
G01S7/4861	11	Circuits for detection, sampling, integration or read-out	G01S7/4861	G01S7/4861		1639
G01S7/4863	12	Detector arrays, e.g. charge-transfer gates	G01S7/4863	G01S7/4863		2402
G01S7/4865	11	Time delay measurement, e.g. time-of-flight measurement, time of arrival measurement or determining the exact position of a peak (peak detection in noise, signal conditioning G01S7/487)	G01S7/4865	G01S7/4865		3081
G01S7/4866	12	{by fitting a model or function to the received signal}	G01S7/4865	G01S7/486		203
G01S7/4868	11	{Controlling received signal intensity or exposure of sensor}	G01S7/486	G01S7/486		799
G01S7/487	11	Extracting wanted echo signals {, e.g. pulse detection}	G01S7/487	G01S7/487		1610
G01S7/4873	12	{by deriving and controlling a threshold value}	G01S7/487	G01S7/487		448
G01S7/4876	12	{by removing unwanted signals (G01S7/495 takes precedence)}	G01S7/487	G01S7/487		664
G01S7/489	11	Gain of receiver varied automatically during pulse-recurrence period	G01S7/489	G01S7/489		183
G01S7/491	9	Details of non-pulse systems	G01S7/491	G01S7/491		333
G01S7/4911	10	Transmitters	G01S7/4911	G01S7/4911		1141
G01S7/4912	10	Receivers	G01S7/4912	G01S7/4912		410
G01S7/4913	11	Circuits for detection, sampling, integration or read-out	G01S7/4913	G01S7/4913		567
G01S7/4914	12	of detector arrays, e.g. charge-transfer gates	G01S7/4914	G01S7/4914		653
G01S7/4915	11	Time delay measurement, e.g. operational details for pixel components (signal extraction and conditioning G01S7/493); Phase measurement	G01S7/4915	G01S7/4915		792
G01S7/4916	11	{using self-mixing in the laser cavity}	G01S7/4912	G01S7/491		165
G01S7/4917	11	{superposing optical signals in a photodetector, e.g. optical heterodyne detection}	G01S7/4912	G01S7/491		465
G01S7/4918	11	{Controlling received signal intensity, gain or exposure of sensor}	G01S7/4912	G01S7/491		247
G01S7/493	10	Extracting wanted echo signals	G01S7/493	G01S7/493		706
G01S7/495	9	Counter-measures or counter-counter-measures {using electronic or electro-optical means}	G01S7/495	G01S7/495		815
G01S7/497	9	Means for monitoring or calibrating	G01S7/497	G01S7/497		8987
G01S7/4972	10	{Alignment of sensor}	G01S7/497	G01S7/497		1707
G01S2007/4975	10	{of sensor obstruction by, e.g. dirt- or ice-coating, e.g. by reflection measurement on front-screen}	G01S7/497	G01S7/497		552
G01S2007/4977	11	{including means to prevent or remove the obstruction}	G01S7/497	G01S7/497		712
G01S7/499	9	using polarisation effects	G01S7/499	G01S7/499		762
G01S7/51	9	Display arrangements	G01S7/51	G01S7/51		654
G01S7/52	8	of systems according to group G01S15/00	G01S7/52	G01S7/52		760
G01S7/52001	9	{Auxiliary means for detecting or identifying sonar signals or the like, e.g. sonar jamming signals}	G01S7/52	G01S7/52		350
G01S7/52003	9	{Techniques for enhancing spatial resolution of targets (G01S7/52046 takes precedence)}	G01S7/52	G01S7/52		426
G01S7/52004	9	{Means for monitoring or calibrating (short-range imaging G01S7/5205)}	G01S7/52	G01S7/52		2321
G01S7/52006	10	{with provision for compensating the effects of temperature}	G01S7/52	G01S7/52		377
G01S2007/52007	10	{involving adjustment of transmitted power}	G01S7/52	G01S7/52		50
G01S2007/52009	10	{of sensor obstruction, e.g. dirt- or ice-coating}	G01S7/52	G01S7/52		143
G01S2007/52011	11	{including means to prevent or remove the obstruction}	G01S7/52	G01S7/52		69
G01S2007/52012	10	{involving a reference ground return}	G01S7/52	G01S7/52		51
G01S2007/52014	10	{involving a reference reflector integrated in the sensor or transducer configuration}	G01S7/52	G01S7/52		52
G01S7/52015	9	{Diversity systems}	G01S7/52	G01S7/52		31
G01S7/52017	9	{particularly adapted to short-range imaging (G01S7/53 takes precedence)}	G01S7/52	G01S7/52		230
G01S7/52019	10	{Details of transmitters}	G01S7/52	G01S7/52		85
G01S7/5202	11	{for pulse systems}	G01S7/52	G01S7/52		391
G01S7/52022	12	{using a sequence of pulses, at least one pulse manipulating the transmissivity or reflexivity of the medium}	G01S7/52	G01S7/52		227
G01S7/52023	10	{Details of receivers}	G01S7/52	G01S7/52		192
G01S7/52025	11	{for pulse systems (G01S7/52034 takes precedence)}	G01S7/52	G01S7/52		355
G01S7/52026	12	{Extracting wanted echo signals (Doppler systems G01S15/50; Doppler short range imaging systems G01S15/8979)}	G01S7/52	G01S7/52		544
G01S7/52028	13	{using digital techniques}	G01S7/52	G01S7/52		199
G01S7/5203	11	{for non-pulse systems, e.g. CW systems (G01S7/52034 takes precedence)}	G01S7/52	G01S7/52		27
G01S7/52031	12	{Extracting wanted echo signals}	G01S7/52	G01S7/52		17
G01S7/52033	11	{Gain control of receivers (for seismic signals G01V1/245)}	G01S7/52	G01S7/52		326
G01S7/52034	11	{Data rate converters}	G01S7/52	G01S7/52		460
G01S7/52036	11	{using analysis of echo signal for target characterisation}	G01S7/52	G01S7/52		672
G01S7/52038	12	{involving non-linear properties of the propagation medium or of the reflective target}	G01S7/52	G01S7/52		460
G01S7/52039	13	{exploiting the non-linear response of a contrast enhancer, e.g. a contrast agent (diagnostic techniques involving the use of contrast agents A61B8/481)}	G01S7/52	G01S7/52		194
G01S7/52041	13	{detecting modification of a contrast enhancer, e.g. detecting the destruction of a contrast agent by an acoustic wave, e.g. loss of correlation (diagnostic techniques involving the use of contrast agents A61B8/481)}	G01S7/52	G01S7/52		67
G01S7/52042	12	{determining elastic properties of the propagation medium or of the reflective target (diagnostic techniques involving the measurement of strain A61B8/485)}	G01S7/52	G01S7/52		564
G01S7/52044	11	{Scan converters}	G01S7/52	G01S7/52		117
G01S7/52046	10	{Techniques for image enhancement involving transmitter or receiver (image enhancement by image data processing G06T5/00)}	G01S7/52	G01S7/52		894
G01S7/52047	11	{for elimination of side lobes or of grating lobes; for increasing resolving power}	G01S7/52	G01S7/52		422
G01S7/52049	11	{using correction of medium-induced phase aberration}	G01S7/52	G01S7/52		260
G01S7/5205	10	{Means for monitoring or calibrating}	G01S7/52	G01S7/52		572
G01S7/52052	11	{with simulation of echoes}	G01S7/52	G01S7/52		34
G01S7/52053	10	{Display arrangements}	G01S7/52	G01S7/52		191
G01S7/52055	11	{in association with ancillary recording equipment}	G01S7/52	G01S7/52		28
G01S7/52057	11	{Cathode ray tube displays}	G01S7/52	G01S7/52		102
G01S7/52058	12	{displaying one measured variable; A-scan display}	G01S7/52	G01S7/52		33
G01S7/5206	12	{Two-dimensional coordinated display of distance and direction; B-scan display}	G01S7/52	G01S7/52		345
G01S7/52061	13	{Plan position indication (PPI display); C-scan display}	G01S7/52	G01S7/52		41
G01S7/52063	13	{Sector scan display}	G01S7/52	G01S7/52		330
G01S7/52065	13	{Compound scan display, e.g. panoramic imaging}	G01S7/52	G01S7/52		114
G01S7/52066	13	{Time-position or time-motion displays}	G01S7/52	G01S7/52		154
G01S7/52068	12	{Stereoscopic displays; Three-dimensional displays; Pseudo 3D displays (G01S15/8993 takes precedence)}	G01S7/52	G01S7/52		88
G01S7/52069	13	{Grey-scale displays}	G01S7/52	G01S7/52		23
G01S7/52071	12	{Multicolour displays; using colour coding; Optimising colour or information content in displays, e.g. parametric imaging}	G01S7/52	G01S7/52		602
G01S7/52073	12	{Production of cursor lines, markers or indicia by electronic means}	G01S7/52	G01S7/52		440
G01S7/52074	12	{Composite displays, e.g. split-screen displays; Combination of multiple images or of images and alphanumeric tabular information}	G01S7/52	G01S7/52		645
G01S7/52076	10	{Luminous indicators}	G01S7/52	G01S7/52		19
G01S7/52077	10	{with means for elimination of unwanted signals, e.g. noise or interference}	G01S7/52	G01S7/52		530
G01S7/52079	10	{Constructional features (constructional features of transducers B06B; mounting transducers G10K11/00; constructional features of ultrasonic medical diagnostic devices A61B8/44)}	G01S7/52	G01S7/52		626
G01S7/5208	11	{with integration of processing functions inside probe or scanhead}	G01S7/52	G01S7/52		548
G01S7/52082	11	{involving a modular construction, e.g. a computer with short range imaging equipment (modular ultrasonic medical diagnostic devices A61B8/4411)}	G01S7/52	G01S7/52		152
G01S7/52084	11	{related to particular user interfaces (special user input means for ultrasonic medical diagnostic devices A61B8/467)}	G01S7/52	G01S7/52		324
G01S7/52085	10	{Details related to the ultrasound signal acquisition, e.g. scan sequences (control of medical diagnostic ultrasound devices A61B8/54)}	G01S7/52	G01S7/52		745
G01S7/52087	11	{using synchronization techniques (control of medical diagnostic ultrasound devices involving acquisition triggered by a physiological signal A61B8/543)}	G01S7/52	G01S7/52		117
G01S7/52088	12	{involving retrospective scan line rearrangements (medical diagnostic ultrasound devices involving retrospective matching to a physiological signal A61B8/5284)}	G01S7/52	G01S7/52		55
G01S7/5209	11	{using multibeam transmission}	G01S7/52	G01S7/52		115
G01S7/52092	12	{using frequency diversity}	G01S7/52	G01S7/52		35
G01S7/52093	12	{using coded signals (G01S15/8959 takes precedence)}	G01S7/52	G01S7/52		27
G01S7/52095	11	{using multiline receive beamforming}	G01S7/52	G01S7/52		367
G01S7/52096	10	{related to power management, e.g. saving power or prolonging life of electronic components (details of power supplies for ultrasonic medical diagnostic imaging devices A61B8/56)}	G01S7/52	G01S7/52		148
G01S7/52098	10	{related to workflow protocols}	G01S7/52	G01S7/52		118
G01S7/521	9	Constructional features	G01S7/521	G01S7/521		3279
G01S7/523	9	Details of pulse systems {(short-range imaging G01S7/52017; methods or devices for transmitting, conducting or directing sound G10K11/18)}	G01S7/523	G01S7/523		283
G01S7/524	10	Transmitters	G01S7/524	G01S7/524		783
G01S7/526	10	Receivers	G01S7/526	G01S7/526		567
G01S7/527	11	Extracting wanted echo signals {(Doppler systems G01S15/50)}	G01S7/527	G01S7/527		1158
G01S7/5273	12	{using digital techniques}	G01S7/527	G01S7/527		268
G01S7/5276	12	{using analogue techniques}	G01S7/527	G01S7/527		81
G01S7/529	11	Gain of receiver varied automatically during pulse-recurrence period {(for seismic signals G01V1/245)}	G01S7/529	G01S7/529		218
G01S7/53	11	Means for transforming coordinates or for evaluating data, e.g. using computers	G01S7/53	G01S7/53		314
G01S7/531	12	Scan converters	G01S7/531	G01S7/531		53
G01S7/533	12	Data rate converters	G01S7/533	G01S7/533		51
G01S7/534	9	Details of non-pulse systems {(short-range imaging G01S7/52017)}	G01S7/534	G01S7/534		366
G01S7/5345	10	{Gain control of receivers (for seismic signals G01V1/245)}	G01S7/534	G01S7/534		31
G01S7/536	10	Extracting wanted echo signals	G01S7/536	G01S7/536		272
G01S7/537	9	Counter-measures or counter-counter-measures, e.g. jamming, anti-jamming	G01S7/537	G01S7/537		336
G01S7/539	9	using analysis of echo signal for target characterisation; Target signature; Target cross-section	G01S7/539	G01S7/539		2588
G01S7/54	9	with receivers spaced apart	G01S7/54	G01S7/54		137
G01S7/56	9	Display arrangements {(short-range imaging G01S7/52053)}	G01S7/56	G01S7/56		285
G01S7/58	10	for providing variable ranges	G01S7/58	G01S7/58		40
G01S7/60	10	for providing a permanent recording	G01S7/60	G01S7/60		215
G01S7/62	10	Cathode-ray tube displays	G01S7/62	G01S7/62		122
G01S7/6209	11	{providing display of one measured variable}	G01S7/62	G01S7/62		46
G01S7/6218	11	{providing two-dimensional coordinated display of distance and direction}	G01S7/62	G01S7/62		128
G01S7/6227	12	{Plan-position indicators, i.e. P.P.I.}	G01S7/62	G01S7/62		40
G01S7/6236	12	{Sector-scan displays}	G01S7/62	G01S7/62		21
G01S7/6245	11	{Stereoscopic displays; Three-dimensional displays; Pseudo-three dimensional displays}	G01S7/62	G01S7/62		141
G01S7/6254	12	{Grey-scale displays}	G01S7/62	G01S7/62		1
G01S7/6263	11	{in which different colours are used}	G01S7/62	G01S7/62		116
G01S7/6272	11	{producing cursor lines and indicia by electronic means}	G01S7/62	G01S7/62		141
G01S7/6281	11	{Composite displays, e.g. split-screen, multiple images}	G01S7/62	G01S7/62		131
G01S7/629	11	{the display being oriented or displaced in accordance with the movement of object carrying the transmitting and receiving apparatus}	G01S7/62	G01S7/62		39
G01S7/64	9	Luminous indications (G01S7/62 takes precedence {; short-range imaging G01S7/52076})	G01S7/64	G01S7/64		79
G01S11/00	7	Systems for determining distance or velocity not using reflection or reradiation (position-fixing by co-ordinating two or more distance determinations G01S5/00)	G01S11/00	G01S11/00		178
G01S11/02	8	using radio waves (G01S19/00 takes precedence)	G01S11/02	G01S11/02		1612
G01S11/023	9	{using impedance elements varying with distance}	G01S11/02	G01S11/02		91
G01S11/026	9	{using moving transmitters}	G01S11/02	G01S11/02		120
G01S11/04	9	using angle measurements	G01S11/04	G01S11/04		284
G01S11/06	9	using intensity measurements	G01S11/06	G01S11/06		2477
G01S11/08	9	using synchronised clocks	G01S11/08	G01S11/08		420
G01S11/10	9	using Doppler effect	G01S11/10	G01S11/10		426
G01S11/12	8	using electromagnetic waves other than radio waves	G01S11/12	G01S11/12		2021
G01S11/125	9	{using gamma or X-rays}	G01S11/12	G01S11/12		29
G01S11/14	8	using ultrasonic, sonic or infrasonic waves	G01S11/14	G01S11/14		1513
G01S11/16	8	using difference in transit time between electrical and acoustic signals	G01S11/16	G01S11/16		393
G01S13/00	7	Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified<br><br><u>NOTE</u><br><br> This group covers : <br>systems for detecting the presence of an object, e.g. by  reflection or reradiation from the object itself, or from  a transponder associated with the object, for determining  the distance or relative velocity of an object, for  providing a co-ordinated display of the distance and  direction of an object or for obtaining an image thereof; <br>systems arranged for mounting on a moving craft or vehicle  and using the reflection of waves from an extended surface  external to the craft, e.g. the surface of the earth, to  determine the velocity and direction of motion of the craft  relative to the surface. <br> This group does not cover : <br>systems for determining the direction of an object by means  not employing reflection or reradiation, which are covered  by groups G01S1/00 or G01S3/00; <br>systems for determining distance or velocity of an object  by means not employing reflection or reradiation, which are  covered by group G01S11/00. 	G01S13/00	G01S13/00		539
G01S13/003	8	{Bistatic radar systems; Multistatic radar systems}	G01S13/00	G01S13/00		2612
G01S13/006	8	{Theoretical aspects (G01S7/418, G01S13/9094, G01S13/958 take precedence)}	G01S13/00	G01S13/00		304
G01S13/02	8	Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems	G01S13/02	G01S13/02		1596
G01S13/0209	9	{Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband}	G01S13/02	G01S13/02		1960
G01S13/0218	9	{Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems (for meteorological use G01S13/95)}	G01S13/02	G01S13/02		184
G01S2013/0227	10	{OTH, Over-The-Horizon radar}	G01S13/02	G01S13/02		58
G01S2013/0236	9	{Special technical features}	G01S13/02	G01S13/02		70
G01S2013/0245	10	{Radar with phased array antenna}	G01S13/02	G01S13/02		1073
G01S2013/0254	11	{Active array antenna}	G01S13/02	G01S13/02		587
G01S2013/0263	11	{Passive array antenna}	G01S13/02	G01S13/02		171
G01S2013/0272	10	{Multifunction radar}	G01S13/02	G01S13/02		146
G01S2013/0281	10	{LPI, Low Probability of Intercept radar}	G01S13/02	G01S13/02		52
G01S2013/029	10	{Antistealth radar}	G01S13/02	G01S13/02		25
G01S13/04	9	Systems determining presence of a target (based on relative movement of target G01S13/56)	G01S13/04	G01S13/04		2671
G01S13/06	9	Systems determining position data of a target	G01S13/06	G01S13/06		2434
G01S13/08	10	Systems for measuring distance only (indirect measurement G01S13/46)	G01S13/08	G01S13/08		2545
G01S13/10	11	using transmission of interrupted, pulse modulated waves (determination of distance by phase measurement G01S13/32)	G01S13/10	G01S13/10		715
G01S13/103	12	{particularities of the measurement of the distance (G01S13/12, G01S13/14, G01S13/16, G01S13/18 and G01S13/20 take precedence)}	G01S13/10	G01S13/10		381
G01S13/106	12	{using transmission of pulses having some particular characteristics (G01S13/12, G01S13/22, G01S13/24, G01S13/26, G01S13/28 and G01S13/30 take precedence)}	G01S13/10	G01S13/10		343
G01S13/12	12	wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse	G01S13/12	G01S13/12		129
G01S13/14	12	wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception	G01S13/14	G01S13/14		77
G01S13/16	13	using counters	G01S13/16	G01S13/16		64
G01S13/18	12	wherein range gates are used	G01S13/18	G01S13/18		465
G01S13/20	12	whereby multiple time-around echoes are used or eliminated	G01S13/20	G01S13/20		115
G01S13/22	12	using irregular pulse repetition frequency {(G01S13/12 takes precedence)}	G01S13/22	G01S13/22		187
G01S13/222	13	{using random or pseudorandom pulse repetition frequency}	G01S13/22	G01S13/22		85
G01S13/225	13	{with cyclic repetition of a non-uniform pulse sequence, e.g. staggered PRF}	G01S13/22	G01S13/22		94
G01S13/227	13	{with repetitive trains of uniform pulse sequences, each sequence having a different pulse repetition frequency}	G01S13/22	G01S13/22		95
G01S13/24	12	using frequency agility of carrier wave	G01S13/24	G01S13/24		427
G01S13/26	12	wherein the transmitted pulses use a frequency- or phase-modulated carrier wave	G01S13/26	G01S13/26		371
G01S13/28	13	with time compression of received pulses	G01S13/28	G01S13/28		315
G01S13/282	14	{using a frequency modulated carrier wave (G01S13/286 takes precedence)}	G01S13/28	G01S13/28		497
G01S13/284	14	{using coded pulses}	G01S13/28	G01S13/28		205
G01S13/286	15	{frequency shift keyed}	G01S13/28	G01S13/28		98
G01S13/288	15	{phase modulated}	G01S13/28	G01S13/28		346
G01S13/30	12	using more than one pulse per radar period	G01S13/30	G01S13/30		222
G01S13/32	11	using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated	G01S13/32	G01S13/32		873
G01S13/325	12	{using transmission of coded signals, e.g. P.S.K. signals}	G01S13/32	G01S13/32		586
G01S13/34	12	using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal	G01S13/34	G01S13/34		2065
G01S13/341	13	{wherein the rate of change of the transmitted frequency is adjusted to give a beat of predetermined constant frequency, e.g. by adjusting the amplitude or frequency of the frequency-modulating signal}	G01S13/34	G01S13/34		151
G01S13/342	13	{using sinusoidal modulation}	G01S13/34	G01S13/34		112
G01S13/343	13	{using sawtooth modulation}	G01S13/34	G01S13/34		1845
G01S13/345	13	{using triangular modulation}	G01S13/34	G01S13/34		896
G01S13/346	13	{using noise modulation}	G01S13/34	G01S13/34		89
G01S13/347	13	{using more than one modulation frequency}	G01S13/34	G01S13/34		350
G01S13/348	13	{using square or rectangular modulation, e.g. diplex radar for ranging over short distances}	G01S13/34	G01S13/34		101
G01S13/36	12	with phase comparison between the received signal and the contemporaneously transmitted signal	G01S13/36	G01S13/36		423
G01S13/38	13	wherein more than one modulation frequency is used	G01S13/38	G01S13/38		205
G01S13/40	13	wherein the frequency of transmitted signal is adjusted to give a predetermined phase relationship	G01S13/40	G01S13/40		73
G01S13/42	10	Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S13/46)	G01S13/42	G01S13/42		3638
G01S13/422	11	{sequential lobing, e.g. conical scan}	G01S13/42	G01S13/42		311
G01S13/424	11	{Stacked beam radar}	G01S13/42	G01S13/42		122
G01S13/426	11	{Scanning radar, e.g. 3D radar (G01S13/66 takes precedence)}	G01S13/42	G01S13/42		938
G01S13/428	12	{within the pulse scanning systems}	G01S13/42	G01S13/42		58
G01S13/44	11	Monopulse radar, i.e. simultaneous lobing	G01S13/44	G01S13/44		592
G01S13/4409	12	{HF sub-systems particularly adapted therefor, e.g. circuits for signal combination (multi-lobing aerials or aerial systems H01Q25/00)}	G01S13/44	G01S13/44		222
G01S13/4418	12	{with means for eliminating radar-dependent errors in angle measurements, e.g. multipath effects}	G01S13/44	G01S13/44		154
G01S13/4427	12	{with means for eliminating the target-dependent errors in angle measurements, e.g. glint, scintillation effects}	G01S13/44	G01S13/44		56
G01S13/4436	12	{with means specially adapted to maintain the same processing characteristics between the monopulse signals}	G01S13/44	G01S13/44		124
G01S13/4445	12	{amplitude comparisons monopulse, i.e. comparing the echo signals received by an antenna arrangement with overlapping squinted beams}	G01S13/44	G01S13/44		232
G01S13/4454	12	{phase comparisons monopulse, i.e. comparing the echo signals received by an interferometric antenna arrangement}	G01S13/44	G01S13/44		439
G01S13/4463	12	{using phased arrays}	G01S13/44	G01S13/44		245
G01S13/4472	12	{with means specially adapted to airborne monopulse systems (clutter elimination using Doppler effect: G01S13/449)}	G01S13/44	G01S13/44		64
G01S13/4481	12	{Monopulse hybrid systems, e.g. conopulse}	G01S13/44	G01S13/44		48
G01S13/449	12	{Combined with MTI or Doppler processing circuits}	G01S13/44	G01S13/44		145
G01S13/46	10	Indirect determination of position data	G01S13/46	G01S13/46		868
G01S2013/462	11	{using multipath signals}	G01S13/46	G01S13/46		256
G01S2013/464	12	{using only the non-line-of-sight signal(s), e.g. to enable survey of scene &apos;behind&apos; the target only the indirect signal is evaluated}	G01S13/46	G01S13/46		94
G01S2013/466	11	{by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined}	G01S13/46	G01S13/46		416
G01S2013/468	11	{by Triangulation, i.e. two antennas or two sensors determine separately the bearing, direction or angle to a target, whereby with the knowledge of the baseline length, the position data of the target is determined}	G01S13/46	G01S13/46		260
G01S13/48	11	using multiple beams at emission or reception	G01S13/48	G01S13/48		443
G01S13/50	9	Systems of measurement based on relative movement of target	G01S13/50	G01S13/50		1122
G01S13/505	10	{using Doppler effect for determining closest range to a target or corresponding time, e.g. miss-distance indicator}	G01S13/50	G01S13/50		386
G01S13/52	10	Discriminating between fixed and moving objects or between objects moving at different speeds	G01S13/52	G01S13/52		833
G01S13/522	11	using transmissions of interrupted pulse modulated waves	G01S13/522	G01S13/522		168
G01S13/524	12	based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi	G01S13/524	G01S13/524		410
G01S13/5242	13	{with means for platform motion or scan motion compensation, e.g. airborne MTI}	G01S13/524	G01S13/524		216
G01S13/5244	13	{Adaptive clutter cancellation (specially adapted for airborne MTI, G01S13/5242)}	G01S13/524	G01S13/524		315
G01S13/5246	13	{post processors for coherent MTI discriminators, e.g. residue cancellers, CFAR after Doppler filters}	G01S13/524	G01S13/524		224
G01S13/5248	13	{combining a coherent MTI processor with a zero Doppler processing channel and a clutter mapped memory, e.g. MTD (Moving target detector), (area MTI G01S13/538)}	G01S13/524	G01S13/524		51
G01S13/526	13	performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters {(G01S13/5244 takes precedence)}	G01S13/526	G01S13/526		189
G01S13/5265	14	{IF cancellers, e.g. TACCAR systems}	G01S13/526	G01S13/526		16
G01S13/528	14	with elimination of blind speeds	G01S13/528	G01S13/528		123
G01S13/53	13	performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar {(G01S13/5244 takes precedence)}	G01S13/53	G01S13/53		370
G01S13/532	14	using a bank of range gates or a memory matrix	G01S13/532	G01S13/532		84
G01S13/534	13	based upon amplitude or phase shift resulting from movement of objects, with reference to the surrounding clutter echo signal, e.g. non coherent MTi, clutter referenced MTi, externally coherent MTi	G01S13/534	G01S13/534		127
G01S13/536	11	using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves	G01S13/536	G01S13/536		733
G01S13/538	11	eliminating objects that have not moved between successive antenna scans, e.g. area MTi	G01S13/538	G01S13/538		135
G01S13/56	11	for presence detection {(presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26)}	G01S13/56	G01S13/56		1846
G01S13/58	10	Velocity or trajectory determination systems; Sense-of-movement determination systems	G01S13/58	G01S13/58		2849
G01S13/581	11	{using transmission of interrupted pulse modulated waves and based upon the Doppler effect resulting from movement of targets}	G01S13/58	G01S13/58		385
G01S13/582	12	{adapted for simultaneous range and velocity measurements}	G01S13/58	G01S13/58		895
G01S13/583	11	{using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets}	G01S13/58	G01S13/58		692
G01S13/584	12	{adapted for simultaneous range and velocity measurements}	G01S13/58	G01S13/58		2058
G01S13/585	11	{processing the video signal in order to evaluate or display the velocity value}	G01S13/58	G01S13/58		156
G01S13/586	12	{using, or combined with, frequency tracking means}	G01S13/58	G01S13/58		129
G01S13/587	12	{using optical means}	G01S13/58	G01S13/58		77
G01S13/588	11	{deriving the velocity value from the range measurement}	G01S13/58	G01S13/58		215
G01S13/589	11	{measuring the velocity vector}	G01S13/58	G01S13/58		659
G01S13/60	11	wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track (G01S13/64 takes precedence)	G01S13/60	G01S13/60		1015
G01S13/605	12	{using a pattern, backscattered from the ground, to determine speed or drift by measuring the time required to cover a fixed distance}	G01S13/60	G01S13/60		108
G01S13/62	11	Sense-of-movement determination {(G01S13/589 takes precedence)}	G01S13/62	G01S13/62		700
G01S13/64	11	Velocity measuring systems using range gates	G01S13/64	G01S13/64		223
G01S13/66	8	Radar-tracking systems; Analogous systems	G01S13/66	G01S13/66		2233
G01S13/68	9	for angle tracking only	G01S13/68	G01S13/68		463
G01S13/685	10	{using simultaneous lobing techniques}	G01S13/68	G01S13/68		103
G01S13/70	9	for range tracking only	G01S13/70	G01S13/70		561
G01S13/72	9	for two-dimensional [2D] tracking, e.g. combination of angle and range tracking, track-while-scan radar	G01S13/72	G01S13/72		1211
G01S13/723	10	{by using numerical data}	G01S13/72	G01S13/72		1030
G01S13/726	11	{Multiple target tracking}	G01S13/72	G01S13/72		1882
G01S13/74	8	Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems	G01S13/74	G01S13/74		1231
G01S13/75	9	using transponders powered from received waves, e.g. using passive transponders {, or using passive reflectors}	G01S13/75	G01S13/75		675
G01S13/751	10	{wherein the responder or reflector radiates a coded signal}	G01S13/75	G01S13/75		399
G01S13/753	11	{using frequency selective elements, e.g. resonator}	G01S13/75	G01S13/75		235
G01S13/755	11	{using delay lines, e.g. acoustic delay lines}	G01S13/75	G01S13/75		146
G01S13/756	11	{using a signal generator for modifying the reflectivity of the reflector (G01S13/758 takes precedence)}	G01S13/75	G01S13/75		203
G01S13/758	11	{using a signal generator powered by the interrogation signal}	G01S13/75	G01S13/75		359
G01S13/76	9	wherein pulse-type signals are transmitted	G01S13/76	G01S13/76		515
G01S13/762	10	{with special measures concerning the radiation pattern, e.g. S.L.S. (aerials or aerial systems providing at least two radiation patterns, e.g. providing sum and difference patterns, H01Q25/00)}	G01S13/76	G01S13/76		250
G01S13/765	10	{with exchange of information between interrogator and responder}	G01S13/76	G01S13/76		2248
G01S13/767	10	{Responders; Transponders (teaching or practice apparatus for gun-aiming or gun-laying using reflecting targets or active targets F41G3/26)}	G01S13/76	G01S13/76		717
G01S13/78	10	discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe (G01S13/75, G01S13/79 take precedence)	G01S13/78	G01S13/78		721
G01S13/781	11	{Secondary Surveillance Radar [SSR] in general}	G01S13/78	G01S13/78		303
G01S13/782	12	{using multimoding or selective addressing}	G01S13/78	G01S13/78		122
G01S13/784	12	{Coders or decoders therefor; Degarbling systems; Defruiting systems}	G01S13/78	G01S13/78		218
G01S13/785	11	{Distance Measuring Equipment [DME] systems}	G01S13/78	G01S13/78		187
G01S13/787	12	{co-operating with direction defining beacons}	G01S13/78	G01S13/78		96
G01S13/788	12	{Coders or decoders therefor; Special detection circuits}	G01S13/78	G01S13/78		74
G01S13/79	9	Systems using random coded signals or random pulse repetition frequencies {, e.g. "Separation and Control of Aircraft using Non synchronous Techniques" [SECANT]}	G01S13/79	G01S13/79		73
G01S13/82	9	wherein continuous-type signals are transmitted	G01S13/82	G01S13/82		360
G01S13/825	10	{with exchange of information between interrogator and responder}	G01S13/82	G01S13/82		551
G01S13/84	10	for distance determination by phase measurement	G01S13/84	G01S13/84		550
G01S13/86	8	Combinations of radar systems with non-radar systems, e.g. sonar, direction finder	G01S13/86	G01S13/86		4254
G01S13/862	9	{Combination of radar systems with sonar systems}	G01S13/86	G01S13/86		981
G01S13/865	9	{Combination of radar systems with lidar systems}	G01S13/86	G01S13/86		2763
G01S13/867	9	{Combination of radar systems with cameras}	G01S13/86	G01S13/86		5976
G01S13/87	8	Combinations of radar systems, e.g. primary radar and secondary radar	G01S13/87	G01S13/87		3205
G01S13/872	9	{Combinations of primary radar and secondary radar}	G01S13/87	G01S13/87		267
G01S13/874	9	{Combination of several systems for attitude determination (in general G01C, control of attitude G05D1/49)}	G01S13/87	G01S13/87		202
G01S13/876	9	{Combination of several spaced transponders or reflectors of known location for determining the position of a receiver (G01S13/874 takes precedence)}	G01S13/87	G01S13/87		581
G01S13/878	9	{Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S13/874 takes precedence)}	G01S13/87	G01S13/87		2075
G01S13/88	8	Radar or analogous systems specially adapted for specific applications (electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00)	G01S13/88	G01S13/88		8291
G01S13/881	9	{for robotics}	G01S13/88	G01S13/88		314
G01S13/882	9	{for altimeters (measuring height using barometric means G01C5/06)}	G01S13/88	G01S13/88		801
G01S13/883	9	{for missile homing, autodirectors (missile guidance systems F41G7/22)}	G01S13/88	G01S13/88		295
G01S13/885	9	{for ground probing (prospecting or detecting using electromagnetic waves G01V3/12)}	G01S13/88	G01S13/88		2488
G01S13/886	9	{for alarm systems (alarms with electrical actuation G08B13/22)}	G01S13/88	G01S13/88		1151
G01S13/887	9	{for detection of concealed objects, e.g. contraband or weapons}	G01S13/88	G01S13/88		1006
G01S13/888	10	{through wall detection}	G01S13/88	G01S13/88		448
G01S13/89	9	for mapping or imaging	G01S13/89	G01S13/89		5951
G01S13/895	10	{Side looking radar [SLR]}	G01S13/89	G01S13/89		62
G01S13/90	10	using synthetic aperture techniques {, e.g. synthetic aperture radar [SAR] techniques}	G01S13/90	G01S13/90		3115
G01S13/9004	11	{SAR image acquisition techniques}	G01S13/90	G01S13/90		660
G01S13/9005	12	{with optical processing of the SAR signals}	G01S13/90	G01S13/90		225
G01S13/9011	12	{with frequency domain processing of the SAR signals in azimuth (G01S13/9005 takes precedence)}	G01S13/90	G01S13/90		470
G01S13/9017	12	{with time domain processing of the SAR signals in azimuth (G01S13/9005 takes precedence)}	G01S13/90	G01S13/90		312
G01S13/9019	12	{Auto-focussing of the SAR signals}	G01S13/90	G01S13/90		326
G01S13/9021	11	{SAR image post-processing techniques}	G01S13/90	G01S13/90		1411
G01S13/9023	12	{combined with interferometric techniques}	G01S13/90	G01S13/90		1616
G01S13/9027	12	{Pattern recognition for feature extraction}	G01S13/90	G01S13/90		629
G01S13/9029	12	{specially adapted for moving target detection within a single SAR image or within multiple SAR images taken at the same time}	G01S13/90	G01S13/90		556
G01S13/904	11	{SAR modes}	G01S13/90	G01S13/90		914
G01S13/9041	12	{Squint mode}	G01S13/90	G01S13/90		189
G01S13/9043	12	{Forward-looking SAR}	G01S13/90	G01S13/90		143
G01S13/9047	12	{Doppler beam sharpening mode}	G01S13/90	G01S13/90		111
G01S13/9052	12	{Spotlight mode}	G01S13/90	G01S13/90		238
G01S13/9054	12	{Stripmap mode}	G01S13/90	G01S13/90		122
G01S13/9056	12	{Scan SAR mode}	G01S13/90	G01S13/90		107
G01S13/9058	12	{Bistatic or multistatic SAR}	G01S13/90	G01S13/90		434
G01S13/9064	12	{Inverse SAR [ISAR]}	G01S13/90	G01S13/90		641
G01S13/9076	12	{Polarimetric features in SAR}	G01S13/90	G01S13/90		229
G01S13/9082	12	{Rotating SAR [ROSAR]}	G01S13/90	G01S13/90		88
G01S13/9088	12	{Circular SAR [CSAR, C-SAR]}	G01S13/90	G01S13/90		115
G01S13/9089	12	{SAR having an irregular aperture}	G01S13/90	G01S13/90		39
G01S13/9092	12	{combined with monopulse techniques}	G01S13/90	G01S13/90		88
G01S13/9094	11	{Theoretical aspects}	G01S13/90	G01S13/90		490
G01S13/91	9	for traffic control (G01S13/93 takes precedence)	G01S13/91	G01S13/91		1413
G01S13/913	10	{for landing purposes}	G01S13/91	G01S13/91		499
G01S2013/916	10	{Airport surface monitoring [ASDE]}	G01S13/91	G01S13/91		128
G01S13/917	10	{for marine craft or other waterborne vessels}	G01S13/91	G01S13/91		137
G01S13/92	10	for velocity measurement	G01S13/92	G01S13/92		660
G01S13/93	9	for anti-collision purposes	G01S13/93	G01S13/93		1162
G01S13/931	10	of land vehicles	G01S13/931	G01S13/931		15755
G01S2013/9314	11	{Parking operations}	G01S13/931	G01S13/931		832
G01S2013/9315	11	{Monitoring blind spots}	G01S13/931	G01S13/931		908
G01S2013/9316	11	{combined with communication equipment with other vehicles or with base stations}	G01S13/931	G01S13/931		1339
G01S2013/9317	11	{Driving backwards}	G01S13/931	G01S13/931		279
G01S2013/9318	11	{Controlling the steering}	G01S13/931	G01S13/931		695
G01S2013/93185	11	{Controlling the brakes}	G01S13/931	G01S13/931		1245
G01S2013/9319	11	{Controlling the accelerator}	G01S13/931	G01S13/931		666
G01S2013/932	11	{using own vehicle data, e.g. ground speed, steering wheel direction}	G01S13/931	G01S13/93		1858
G01S2013/9321	11	{Velocity regulation, e.g. cruise control}	G01S13/931	G01S13/93		1028
G01S2013/9322	11	{using additional data, e.g. driver condition, road state or weather data}	G01S13/931	G01S13/93		806
G01S2013/9323	11	{Alternative operation using light waves}	G01S13/931	G01S13/93		1927
G01S2013/9324	11	{Alternative operation using ultrasonic waves}	G01S13/931	G01S13/93		1246
G01S2013/9325	11	{for inter-vehicle distance regulation, e.g. navigating in platoons}	G01S13/931	G01S13/93		851
G01S2013/9327	11	{Sensor installation details}	G01S13/931	G01S13/93		437
G01S2013/93271	12	{in the front of the vehicles}	G01S13/931	G01S13/93		3489
G01S2013/93272	12	{in the back of the vehicles}	G01S13/931	G01S13/93		1579
G01S2013/93273	12	{on the top of the vehicles}	G01S13/931	G01S13/93		477
G01S2013/93274	12	{on the side of the vehicles}	G01S13/931	G01S13/93		1279
G01S2013/93275	12	{in the bumper area}	G01S13/931	G01S13/93		1019
G01S2013/93276	12	{in the windshield area}	G01S13/931	G01S13/93		228
G01S2013/93277	12	{in the lights}	G01S13/931	G01S13/93		324
G01S2013/9328	11	{Rail vehicles}	G01S13/931	G01S13/93		153
G01S2013/9329	11	{cooperating with reflectors or transponders}	G01S13/931	G01S13/93		467
G01S13/933	10	of aircraft or spacecraft	G01S13/933	G01S13/933		1268
G01S13/934	11	on airport surfaces, e.g. while taxiing	G01S13/934	G01S13/934		119
G01S13/935	11	for terrain-avoidance	G01S13/935	G01S13/935		543
G01S13/937	10	of marine craft	G01S13/937	G01S13/937		774
G01S13/95	9	for meteorological use	G01S13/95	G01S13/95		2037
G01S13/951	10	{ground based}	G01S13/95	G01S13/95		568
G01S13/953	10	{mounted on aircraft}	G01S13/95	G01S13/95		653
G01S13/955	10	{mounted on satellite}	G01S13/95	G01S13/95		208
G01S13/956	10	{mounted on ship or other platform}	G01S13/95	G01S13/95		152
G01S13/958	10	{Theoretical aspects}	G01S13/95	G01S13/95		285
G01S15/00	7	Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems<br><br><u>NOTE</u><br><br> This group covers : <br>systems for detecting the presence of an object, e.g. by  reflection or reradiation from the object itself, or from  a transponder associated with the object, for determining  the distance or relative velocity of an object, for  providing a co-ordinated display of the distance and  direction of an object or for obtaining an image thereof; <br>systems arranged for mounting on a moving craft or vehicle  and using the reflection of waves from an extended surface  external to the craft, e.g. the surface of the earth, to  determine the velocity and direction of motion of the craft  relative to the surface. <br> This group does not cover : <br>systems for determining the direction of an object by means  not employing reflection or reradiation, which are covered  by groups G01S1/00 or G01S3/00; <br>systems for determining distance or velocity of an object  by means not employing reflection or reradiation, which are  covered by group G01S11/00. 	G01S15/00	G01S15/00		290
G01S15/003	8	{Bistatic sonar systems; Multistatic sonar systems}	G01S15/00	G01S15/00		333
G01S15/006	8	{Theoretical aspects}	G01S15/00	G01S15/00		84
G01S15/02	8	using reflection of acoustic waves (G01S15/66 takes precedence)	G01S15/02	G01S15/02		517
G01S15/04	9	Systems determining presence of a target	G01S15/04	G01S15/04		1436
G01S15/06	9	Systems determining the position data of a target	G01S15/06	G01S15/06		1201
G01S15/08	10	Systems for measuring distance only (indirect measurement G01S15/46)	G01S15/08	G01S15/08		3156
G01S15/10	11	using transmission of interrupted, pulse-modulated waves (determination of distance by phase measurement G01S15/32)	G01S15/10	G01S15/10		713
G01S15/101	12	{Particularities of the measurement of distance (G01S15/12, G01S15/14, and G01S15/18 take precedence)}	G01S15/10	G01S15/10		398
G01S15/102	12	{using transmission of pulses having some particular characteristics}	G01S15/10	G01S15/10		278
G01S15/104	13	{wherein the transmitted pulses use a frequency- or phase-modulated carrier wave}	G01S15/10	G01S15/10		317
G01S15/105	13	{using irregular pulse repetition frequency}	G01S15/10	G01S15/10		48
G01S15/107	13	{using frequency agility of carrier wave}	G01S15/10	G01S15/10		108
G01S15/108	13	{using more than one pulse per sonar period}	G01S15/10	G01S15/10		77
G01S15/12	12	wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse	G01S15/12	G01S15/12		83
G01S15/14	12	wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception	G01S15/14	G01S15/14		204
G01S15/18	12	wherein range gates are used	G01S15/18	G01S15/18		168
G01S15/32	11	using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated	G01S15/32	G01S15/32		184
G01S15/325	12	{using transmission of coded signals, e.g. of phase-shift keyed [PSK] signals}	G01S15/32	G01S15/32		96
G01S15/34	12	using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal	G01S15/34	G01S15/34		158
G01S15/36	12	with phase comparison between the received signal and the contemporaneously transmitted signal	G01S15/36	G01S15/36		119
G01S15/42	10	Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S15/46)	G01S15/42	G01S15/42		1036
G01S15/46	10	Indirect determination of position data	G01S15/46	G01S15/46		327
G01S2015/465	11	{by Trilateration, i.e. two transducers determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the transducers, the position data of the target is determined}	G01S15/46	G01S15/46		174
G01S15/50	9	Systems of measurement, based on relative movement of the target	G01S15/50	G01S15/50		325
G01S15/52	10	Discriminating between fixed and moving objects or between objects moving at different speeds	G01S15/52	G01S15/52		218
G01S15/523	11	{for presence detection (burglar, theft or intruder alarms G08B13/00, e.g. G08B13/16)}	G01S15/52	G01S15/52		271
G01S15/526	12	{by comparing echos in different sonar periods}	G01S15/52	G01S15/52		63
G01S15/58	10	Velocity or trajectory determination systems; Sense-of-movement determination systems {(velocity measurement in imaging systems G01S15/8979)}	G01S15/58	G01S15/58		621
G01S15/582	11	{using transmission of interrupted pulse-modulated waves and based upon the Doppler effect resulting from movement of targets}	G01S15/58	G01S15/58		322
G01S15/584	12	{with measures taken for suppressing velocity ambiguities, i.e. anti-aliasing}	G01S15/58	G01S15/58		64
G01S15/586	11	{using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets}	G01S15/58	G01S15/58		171
G01S15/588	11	{measuring the velocity vector}	G01S15/58	G01S15/58		137
G01S15/60	11	wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track	G01S15/60	G01S15/60		371
G01S15/62	11	Sense-of-movement determination {(G01S15/588 takes precedence)}	G01S15/62	G01S15/62		105
G01S15/66	8	Sonar tracking systems	G01S15/66	G01S15/66		658
G01S15/74	8	Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe	G01S15/74	G01S15/74		388
G01S15/86	8	Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection	G01S15/86	G01S15/86		1953
G01S15/87	8	Combinations of sonar systems	G01S15/87	G01S15/87		1333
G01S15/872	9	{Combination of several systems for attitude determination (using inertial means G01C9/00, control of attitude G05D1/49)}	G01S15/87	G01S15/87		113
G01S15/874	9	{Combination of several spaced transponders or reflectors of known location for determining the position of a receiver (G01S15/872 takes precedence)}	G01S15/87	G01S15/87		87
G01S15/876	9	{Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector (G01S15/872 takes precedence)}	G01S15/87	G01S15/87		495
G01S15/878	10	{wherein transceivers are operated, either sequentially or simultaneously, both in bi-static and in mono-static mode, e.g. cross-echo mode}	G01S15/87	G01S15/87		192
G01S15/88	8	Sonar systems specially adapted for specific applications (seismic or acoustic prospecting or detecting G01V1/00)	G01S15/88	G01S15/88		3747
G01S15/885	9	{Meteorological systems}	G01S15/88	G01S15/88		150
G01S15/89	9	for mapping or imaging	G01S15/89	G01S15/89		2504
G01S15/8902	10	{Side-looking sonar}	G01S15/89	G01S15/89		429
G01S15/8904	11	{using synthetic aperture techniques}	G01S15/89	G01S15/89		208
G01S15/8906	10	{Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques}	G01S15/89	G01S15/89		361
G01S15/8909	11	{using a static transducer configuration}	G01S15/89	G01S15/89		143
G01S15/8911	12	{using a single transducer for transmission and reception}	G01S15/89	G01S15/89		46
G01S15/8913	12	{using separate transducers for transmission and reception}	G01S15/89	G01S15/89		240
G01S15/8915	12	{using a transducer array}	G01S15/89	G01S15/89		1186
G01S15/8918	13	{the array being linear}	G01S15/89	G01S15/89		382
G01S15/892	13	{the array being curvilinear}	G01S15/89	G01S15/89		168
G01S15/8922	13	{the array being concentric or annular}	G01S15/89	G01S15/89		179
G01S15/8925	13	{the array being a two-dimensional transducer configuration, i.e. matrix or orthogonal linear arrays}	G01S15/89	G01S15/89		792
G01S15/8927	13	{using simultaneously or sequentially two or more subarrays or subapertures}	G01S15/89	G01S15/89		702
G01S15/8929	12	{using a three-dimensional transducer configuration}	G01S15/89	G01S15/89		137
G01S15/8931	12	{co-operating with moving reflectors}	G01S15/89	G01S15/89		24
G01S15/8934	11	{using a dynamic transducer configuration}	G01S15/89	G01S15/89		110
G01S15/8936	12	{using transducers mounted for mechanical movement in three dimensions}	G01S15/89	G01S15/89		146
G01S15/8938	12	{using transducers mounted for mechanical movement in two dimensions}	G01S15/89	G01S15/89		76
G01S15/894	13	{by rotation about a single axis}	G01S15/89	G01S15/89		255
G01S15/8943	14	{co-operating with reflectors}	G01S15/89	G01S15/89		26
G01S15/8945	12	{using transducers mounted for linear mechanical movement}	G01S15/89	G01S15/89		98
G01S15/8947	12	{using transducers movable by (electro)magnetic means}	G01S15/89	G01S15/89		10
G01S15/895	11	{characterised by the transmitted frequency spectrum}	G01S15/89	G01S15/89		158
G01S15/8952	12	{using discrete, multiple frequencies}	G01S15/89	G01S15/89		269
G01S15/8954	12	{using a broad-band spectrum}	G01S15/89	G01S15/89		110
G01S15/8956	12	{using frequencies at or above 20 MHz}	G01S15/89	G01S15/89		62
G01S15/8959	11	{using coded signals for correlation purposes}	G01S15/89	G01S15/89		225
G01S15/8961	12	{using pulse compression}	G01S15/89	G01S15/89		105
G01S15/8963	12	{using pulse inversion}	G01S15/89	G01S15/89		154
G01S15/8965	11	{using acousto-optical or acousto-electronic conversion techniques}	G01S15/89	G01S15/89		92
G01S15/8968	12	{using acoustical modulation of a light beam (acousto-optical light control devices G02F1/11, G02F1/33)}	G01S15/89	G01S15/89		75
G01S15/897	12	{using application of holographic techniques}	G01S15/89	G01S15/89		108
G01S15/8972	13	{with optical reconstruction of the image}	G01S15/89	G01S15/89		15
G01S15/8975	12	{using acoustical image/electron beam converter tubes (tubes therefor H01J31/495)}	G01S15/89	G01S15/89		17
G01S15/8977	11	{using special techniques for image reconstruction, e.g. FFT, geometrical transformations, spatial deconvolution, time deconvolution}	G01S15/89	G01S15/89		642
G01S15/8979	11	{Combined Doppler and pulse-echo imaging systems}	G01S15/89	G01S15/89		1034
G01S15/8981	12	{Discriminating between fixed and moving objects or between objects moving at different speeds, e.g. wall clutter filter}	G01S15/89	G01S15/89		241
G01S15/8984	12	{Measuring the velocity vector}	G01S15/89	G01S15/89		195
G01S15/8986	12	{with measures taken for suppressing velocity ambiguities, i.e. anti-aliasing}	G01S15/89	G01S15/89		26
G01S15/8988	12	{Colour Doppler imaging}	G01S15/89	G01S15/89		179
G01S15/899	11	{Combination of imaging systems with ancillary equipment}	G01S15/89	G01S15/89		524
G01S15/8993	11	{Three dimensional imaging systems}	G01S15/89	G01S15/89		1261
G01S15/8995	11	{Combining images from different aspect angles, e.g. spatial compounding}	G01S15/89	G01S15/89		330
G01S15/8997	11	{using synthetic aperture techniques}	G01S15/89	G01S15/89		318
G01S15/93	9	for anti-collision purposes	G01S15/93	G01S15/93		1265
G01S15/931	10	of land vehicles	G01S15/931	G01S15/931		5316
G01S2015/932	11	{for parking operations}	G01S15/931	G01S15/93		685
G01S2015/933	12	{for measuring the dimensions of the parking space when driving past}	G01S15/931	G01S15/93		81
G01S2015/934	13	{for measuring the depth, i.e. width, not length, of the parking space}	G01S15/931	G01S15/93		70
G01S2015/935	13	{for measuring the contour, e.g. a trajectory of measurement points, representing the boundary of the parking space}	G01S15/931	G01S15/93		195
G01S2015/936	13	{for measuring parking spaces extending transverse or diagonal to the driving direction, i.e. not parallel to the driving direction}	G01S15/931	G01S15/93		78
G01S2015/937	11	{sensor installation details}	G01S15/931	G01S15/93		407
G01S2015/938	12	{in the bumper area}	G01S15/931	G01S15/93		797
G01S2015/939	12	{vertical stacking of sensors, e.g. to enable obstacle height determination}	G01S15/931	G01S15/93		79
G01S15/96	9	for locating fish	G01S15/96	G01S15/96		1127
G01S17/00	7	Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems<br><br><u>NOTE</u><br><br>This group covers:<br>systems for detecting the presence of an object, e.g. by reflection or reradiation from the object itself, or from a transponder associated with the object, for determining the distance or relative velocity of an object, for providing a coordinated display of the distance and direction of an object or for obtaining an image thereof;<br>systems arranged for mounting on a moving craft or vehicle and using the reflection of waves from an extended surface external to the craft, e.g. the surface of the earth, to determine the velocity and direction of motion of the craft relative to the surface.<br>This subclass does not cover: <br>systems for determining the direction of anobject by means not employing reflectionor reradiation which are covered by groups G01S1/00 or G01S3/00;<br>systems for determining distance or velocity of an object by means not employing reflection or reradiation, which are covered by group G01S11/00.	G01S17/00	G01S17/00		327
G01S17/003	8	{Bistatic lidar systems; Multistatic lidar systems}	G01S17/00	G01S17/00		282
G01S17/006	8	{Theoretical aspects}	G01S17/00	G01S17/00		123
G01S17/02	8	Systems using the reflection of electromagnetic waves other than radio waves (G01S17/66 takes precedence)	G01S17/02	G01S17/02		1408
G01S17/04	9	Systems determining the presence of a target	G01S17/04	G01S17/04		2833
G01S17/06	9	Systems determining position data of a target	G01S17/06	G01S17/06		3351
G01S17/08	10	for measuring distance only (indirect measurement G01S17/46; active triangulation systems G01S17/48)	G01S17/08	G01S17/08		10873
G01S17/10	11	using transmission of interrupted, pulse-modulated waves (determination of distance by phase measurements G01S17/32)	G01S17/10	G01S17/10		5820
G01S17/14	12	wherein a voltage or current pulse is initiated and terminated in accordance with the pulse transmission and echo reception respectively, e.g. using counters	G01S17/14	G01S17/14		484
G01S17/18	12	wherein range gates are used	G01S17/18	G01S17/18		521
G01S17/26	12	wherein the transmitted pulses use a frequency-modulated or phase-modulated carrier wave, e.g. for pulse compression of received signals	G01S17/26	G01S17/26		452
G01S17/32	11	using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated	G01S17/32	G01S17/32		1186
G01S17/34	12	using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal	G01S17/34	G01S17/34		1335
G01S17/36	12	with phase comparison between the received signal and the contemporaneously transmitted signal	G01S17/36	G01S17/36		1727
G01S17/42	10	Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46)	G01S17/42	G01S17/42		7198
G01S17/46	10	Indirect determination of position data	G01S17/46	G01S17/46		1144
G01S17/48	11	Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves	G01S17/48	G01S17/48		1746
G01S17/50	9	Systems of measurement based on relative movement of target	G01S17/50	G01S17/50		995
G01S17/58	10	Velocity or trajectory determination systems; Sense-of-movement determination systems	G01S17/58	G01S17/58		3207
G01S17/66	8	Tracking systems using electromagnetic waves other than radio waves	G01S17/66	G01S17/66		2287
G01S17/74	8	Systems using reradiation of electromagnetic waves other than radio waves, e.g. IFF, i.e. identification of friend or foe	G01S17/74	G01S17/74		592
G01S17/86	8	Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders	G01S17/86	G01S17/86		9704
G01S17/87	8	Combinations of systems using electromagnetic waves other than radio waves	G01S17/87	G01S17/87		2637
G01S17/875	9	for determining attitude	G01S17/875	G01S17/875		327
G01S17/88	8	Lidar systems specially adapted for specific applications	G01S17/88	G01S17/88		7605
G01S17/89	9	for mapping or imaging	G01S17/89	G01S17/89		14510
G01S17/894	10	Three-dimensional [3D] imaging with simultaneous measurement of time-of-flight at a two-dimensional [2D] array of receiver pixels, e.g. time-of-flight cameras or flash lidar	G01S17/894	G01S17/894		5645
G01S17/90	10	using synthetic aperture techniques	G01S17/90	G01S17/90		262
G01S17/93	9	for anti-collision purposes	G01S17/93	G01S17/93		2296
G01S17/931	10	of land vehicles	G01S17/931	G01S17/931		14548
G01S17/933	10	of aircraft or spacecraft	G01S17/933	G01S17/933		871
G01S17/95	9	for meteorological use	G01S17/95	G01S17/95		2352
G01S19/00	7	Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems	G01S19/00	G01S19/00		317
G01S19/01	8	Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO	G01S19/01	G01S19/01		4046
G01S19/015	9	{Arrangements for jamming, spoofing or other methods of denial of service of such systems}	G01S19/01	G01S19/01		427
G01S19/02	9	Details of the space or ground control segments	G01S19/02	G01S19/02		620
G01S19/03	9	Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers<br><br><u>NOTE</u><br><br>The term "cooperating elements" designates additional elements or subsystems, including receivers of other users, which interact or communicate with the receiver or the satellite positioning system.	G01S19/03	G01S19/03		1202
G01S19/04	10	providing carrier phase data	G01S19/04	G01S19/04		437
G01S19/05	10	providing aiding data	G01S19/05	G01S19/05		999
G01S19/06	11	employing an initial estimate of the location of the receiver as aiding data or in generating aiding data	G01S19/06	G01S19/06		341
G01S19/07	10	providing data for correcting measured positioning data, e.g. DGPS [differential GPS] or ionosphere corrections	G01S19/07	G01S19/07		1233
G01S19/071	11	{DGPS corrections}	G01S19/07	G01S19/07		669
G01S19/072	11	{Ionosphere corrections}	G01S19/07	G01S19/07		585
G01S19/073	11	{involving a network of fixed stations}	G01S19/07	G01S19/07		230
G01S19/074	12	{providing integrity data, e.g. WAAS}	G01S19/07	G01S19/07		112
G01S19/08	10	providing integrity information, e.g. health of satellites or quality of ephemeris data	G01S19/08	G01S19/08		549
G01S19/09	10	providing processing capability normally carried out by the receiver	G01S19/09	G01S19/09		501
G01S19/10	10	providing dedicated supplementary positioning signals	G01S19/10	G01S19/10		378
G01S19/11	11	wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters	G01S19/11	G01S19/11		598
G01S19/115	12	{Airborne or satellite based pseudolites or repeaters}	G01S19/11	G01S19/11		119
G01S19/12	11	wherein the cooperating elements are telecommunication base stations	G01S19/12	G01S19/12		487
G01S19/13	9	Receivers	G01S19/13	G01S19/13		3759
G01S19/14	10	specially adapted for specific applications	G01S19/14	G01S19/14		10044
G01S19/15	11	Aircraft landing systems	G01S19/15	G01S19/15		380
G01S19/16	11	Anti-theft; Abduction	G01S19/16	G01S19/16		690
G01S19/17	11	Emergency applications	G01S19/17	G01S19/17		1373
G01S19/18	11	Military applications	G01S19/18	G01S19/18		275
G01S19/19	11	Sporting applications	G01S19/19	G01S19/19		807
G01S19/20	10	Integrity monitoring, fault detection or fault isolation of space segment	G01S19/20	G01S19/20		1370
G01S19/21	10	Interference related issues {; Issues related to cross-correlation, spoofing or other methods of denial of service}	G01S19/21	G01S19/21		2115
G01S19/215	11	{issues related to spoofing}	G01S19/21	G01S19/21		1146
G01S19/22	10	Multipath-related issues	G01S19/22	G01S19/22		1039
G01S19/23	10	Testing, monitoring, correcting or calibrating of receiver elements	G01S19/23	G01S19/23		2629
G01S19/235	11	{Calibration of receiver components}	G01S19/23	G01S19/23		861
G01S19/24	10	Acquisition or tracking {or demodulation} of signals transmitted by the system {(synchronisation aspects of direct sequence spread spectrum modulation H04B1/7073)}	G01S19/24	G01S19/24		1676
G01S19/243	11	{Demodulation of navigation message}	G01S19/24	G01S19/24		262
G01S19/246	11	{involving long acquisition integration times, extended snapshots of signals or methods specifically directed towards weak signal acquisition}	G01S19/24	G01S19/24		256
G01S19/25	11	involving aiding data received from a cooperating element, e.g. assisted GPS	G01S19/25	G01S19/25		671
G01S19/252	12	{Employing an initial estimate of location in generating assistance data}	G01S19/25	G01S19/25		237
G01S19/254	12	{relating to Doppler shift of satellite signals}	G01S19/25	G01S19/25		314
G01S19/256	12	{relating to timing, e.g. time of week, code phase, timing offset}	G01S19/25	G01S19/25		1085
G01S19/258	12	{relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view}	G01S19/25	G01S19/25		749
G01S19/26	11	involving a sensor measurement for aiding acquisition or tracking	G01S19/26	G01S19/26		484
G01S19/27	11	creating, predicting or correcting ephemeris or almanac data within the receiver	G01S19/27	G01S19/27		608
G01S19/28	11	Satellite selection	G01S19/28	G01S19/28		674
G01S19/29	11	carrier {including Doppler,} related {(G01S19/246 takes precedence)}	G01S19/29	G01S19/29		1648
G01S19/30	11	code related {(G01S19/246 takes precedence)}	G01S19/30	G01S19/30		1895
G01S19/31	10	Acquisition or tracking of other signals for positioning	G01S19/31	G01S19/31		298
G01S19/32	10	Multimode operation in a single same satellite system, e.g. GPS L1/L2	G01S19/32	G01S19/32		569
G01S19/33	10	Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS	G01S19/33	G01S19/33		1238
G01S19/34	10	Power consumption	G01S19/34	G01S19/34		1563
G01S19/35	10	Constructional details or hardware or software details of the signal processing chain	G01S19/35	G01S19/35		886
G01S19/36	11	relating to the receiver frond end	G01S19/36	G01S19/36		950
G01S19/37	11	Hardware or software details of the signal processing chain	G01S19/37	G01S19/37		4962
G01S19/38	8	Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system	G01S19/38	G01S19/38		579
G01S19/39	9	the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO	G01S19/39	G01S19/39		903
G01S19/393	10	{Trajectory determination or predictive tracking, e.g. Kalman filtering}	G01S19/39	G01S19/39		1113
G01S19/396	10	{Determining accuracy or reliability of position or pseudorange measurements}	G01S19/39	G01S19/39		1107
G01S19/40	10	Correcting position, velocity or attitude	G01S19/40	G01S19/40		2093
G01S19/41	11	Differential correction, e.g. DGPS [differential GPS]	G01S19/41	G01S19/41		2247
G01S19/42	10	Determining position	G01S19/42	G01S19/42		12581
G01S19/421	11	{by combining or switching between position solutions or signals derived from different satellite radio beacon positioning systems; by combining or switching between position solutions or signals derived from different modes of operation in a single system}	G01S19/42	G01S19/42		291
G01S19/423	12	{by combining or switching between position solutions derived from different satellite radio beacon positioning systems}	G01S19/42	G01S19/42		213
G01S19/425	12	{by combining or switching between signals derived from different satellite radio beacon positioning systems}	G01S19/42	G01S19/42		239
G01S19/426	12	{by combining or switching between position solutions or signals derived from different modes of operation in a single system}	G01S19/42	G01S19/42		241
G01S19/428	11	{using multipath or indirect path propagation signals in position determination}	G01S19/42	G01S19/42		180
G01S19/43	11	using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry	G01S19/43	G01S19/43		2367
G01S19/44	12	Carrier phase ambiguity resolution; Floating ambiguity; LAMBDA [Least-squares AMBiguity Decorrelation Adjustment] method	G01S19/44	G01S19/44		1651
G01S19/45	11	by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement	G01S19/45	G01S19/45		2546
G01S19/46	12	the supplementary measurement being of a radio-wave signal type	G01S19/46	G01S19/46		1867
G01S19/47	12	the supplementary measurement being an inertial measurement, e.g. tightly coupled inertial	G01S19/47	G01S19/47		3538
G01S19/48	11	by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system	G01S19/48	G01S19/48		2743
G01S19/485	12	{whereby the further system is an optical system or imaging system}	G01S19/48	G01S19/48		858
G01S19/49	12	whereby the further system is an inertial position system, e.g. loosely-coupled	G01S19/49	G01S19/49		2523
G01S19/50	11	whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks	G01S19/50	G01S19/50		504
G01S19/51	11	Relative positioning	G01S19/51	G01S19/51		1115
G01S19/52	10	Determining velocity	G01S19/52	G01S19/52		1216
G01S19/53	10	Determining attitude	G01S19/53	G01S19/53		974
G01S19/54	11	using carrier phase measurements; using long or short baseline interferometry	G01S19/54	G01S19/54		250
G01S19/55	12	Carrier phase ambiguity resolution; Floating ambiguity; LAMBDA [Least-squares AMBiguity Decorrelation Adjustment] method	G01S19/55	G01S19/55		157
G01S2201/00	7	Indexing scheme relating to beacons or beacon systems transmitting signals capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters	CPCONLY	G01S2201/00		2
G01S2201/01	8	adapted for specific applications or environments	CPCONLY	G01S2201/01		183
G01S2201/02	9	Indoor positioning, e.g. in covered car-parks, mining facilities, warehouses	CPCONLY	G01S2201/02		122
G01S2201/025	10	Indoor pedestrian positioning	CPCONLY	G01S2201/025		25
G01S2201/03	9	Construction sites	CPCONLY	G01S2201/03		27
G01S2201/04	9	Emergencies	CPCONLY	G01S2201/04		32
G01S2201/05	9	Sport	CPCONLY	G01S2201/05		9
G01S2201/06	9	Aircraft navigation	CPCONLY	G01S2201/06		45
G01S2201/07	9	Under water	CPCONLY	G01S2201/07		36
G01S2201/08	9	Marine or water borne applications	CPCONLY	G01S2201/08		28
G01S2205/00	7	Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations	CPCONLY	G01S2205/00		16
G01S2205/001	8	Transmission of position information to remote stations	CPCONLY	G01S2205/001		58
G01S2205/002	9	for traffic control, mobile tracking, guidance, surveillance or anti-collision	CPCONLY	G01S2205/002		294
G01S2205/003	10	for aircraft positioning relative to the ground	CPCONLY	G01S2205/003		38
G01S2205/005	10	for aircraft positioning relative to other aircraft	CPCONLY	G01S2205/005		33
G01S2205/006	9	for emergency situations	CPCONLY	G01S2205/006		205
G01S2205/007	9	for management of a communication system	CPCONLY	G01S2205/007		75
G01S2205/008	9	using a mobile telephone network	CPCONLY	G01S2205/008		715
G01S2205/01	8	specially adapted for specific applications	CPCONLY	G01S2205/01		1035
G01S2205/02	9	Indoor	CPCONLY	G01S2205/02		628
G01S2205/03	9	Airborne	CPCONLY	G01S2205/03		209
G01S2205/04	9	Nautical	CPCONLY	G01S2205/04		71
G01S2205/05	9	Anti-theft or abduction	CPCONLY	G01S2205/05		40
G01S2205/06	9	Emergency	CPCONLY	G01S2205/06		147
G01S2205/07	9	Military	CPCONLY	G01S2205/07		42
G01S2205/08	9	Sport	CPCONLY	G01S2205/08		70
G01S2205/09	9	for tracking people	CPCONLY	G01S2205/09		178
G01S2205/10	10	Elderly or infirm	CPCONLY	G01S2205/10		25
