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This page displays all 「FI」 in main group G01S3/00. |
HB:Handbook | ||||
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CC:Concordance | |||||
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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 G01S 5/00) | HB | CC | 5J058 | |
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.using radio waves | HB | CC | 5J058 | |
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..Details | HB | CC | 5J058 | |
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Indicating devices (3/62 or 3/68 takes precedence.) | HB | CC | 5J058 | |
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Goniometers for measuring bearing | HB | CC | 5J058 | |
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antennas for measuring bearing | HB | CC | 5J058 | |
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Others | HB | CC | 5J058 | |
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...Means for increasing effective directivity, e.g. by combining signals having differently- oriented directivity characteristicsor by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam aerial (comparing amplitude of signals having differently-oriented directivity characteristics to determine direction G01S 3/16, G01S 3/28) | HB | CC | 5J058 | |
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...Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems | HB | CC | 5J058 | |
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...Means for reducing or compensating for quadrantal, site, or like errors | HB | CC | 5J058 | |
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...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) | HB | CC | 5J058 | |
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..Systems for determining direction or deviation from predetermined direction | HB | CC | 5J058 | |
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...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 | HB | CC | 5J058 | |
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....derived directly from separate directional antennas | HB | CC | 5J058 | |
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....derived by sampling signal received by an antenna system having periodically-varied orientation of directivity characteristic | HB | CC | 5J058 | |
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....derived from different combinations of signals from separate antennas, e.g. comparing sum with difference | HB | CC | 5J058 | |
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.....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 | HB | CC | 5J058 | |
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.....the separate antennas having differently-oriented directivity characteristics | HB | CC | 5J058 | |
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...using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics | HB | CC | 5J058 | |
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....derived directly from separate directional systems | HB | CC | 5J058 | |
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....derived from different combinations of signals from separate antennas, e.g. comparing sum with difference | HB | CC | 5J058 | |
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.....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 | HB | CC | 5J058 | |
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.....the separate antennas having differently-oriented directivity characteristics | HB | CC | 5J058 | |
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...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) | HB | CC | 5J058 | |
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....adjusting orientation of a single directivity characteristic to produce maximum or minimum signal, e.g. rotatable loop antenna or equivalent goniometer system | HB | CC | 5J058 | |
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....the desired condition being maintained automatically | HB | CC | 5J058 | |
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Tracing programs | HB | CC | 5J058 | |
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Using of higher modes | HB | CC | 5J058 | |
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Sum or difference monopulses | HB | CC | 5J058 | |
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Mounted on moving objets | HB | CC | 5J058 | |
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Others | HB | CC | 5J058 | |
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....the adjustment being varied periodically or continuously until it is halted automatically when the desired condition is attained | HB | CC | 5J058 | |
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...using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems | HB | CC | 5J058 | |
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....the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured | HB | CC | 5J058 | |
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....the waves arriving at the antennas being pulse modulated and the time difference of their arrival being measured | HB | CC | 5J058 | |
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...using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal | HB | CC | 5J058 | |
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....the apparent movement of the antenna being produced by coupling the receiver cyclically and sequentially to each of several fixed spaced antennas | HB | CC | 5J058 | |
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...Conical-scan beam systems using signals indicative of the deviation of the direction of reception from the scan axis | HB | CC | 5J058 | |
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...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 () | HB | CC | 5J058 | |
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....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 | HB | CC | 5J058 | |
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.....wherein the phase angle of the signal is indicated by a cathode-ray tube | HB | CC | 5J058 | |
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.....wherein the phase angle of the signal is determined by phase comparison with a reference alternating signal varying in synchronism with the directivity variation | HB | CC | 5J058 | |
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....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 | HB | CC | 5J058 | |
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.....wherein the timing of the pulse-type envelope signal is indicated by cathode-ray tube | HB | CC | 5J058 | |
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.....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 | HB | CC | 5J058 | |
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..Diversity systems specially adapted for direction-finding | HB | CC | 5J058 | |
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..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) | HB | CC | 5J058 | |
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.using electromagnetic waves other than radio waves | HB | CC | 5J061 | |
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..Details [5] | HB | CC | 5J061 | |
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..Systems for determining direction or deviation from predetermined direction [5] | HB | CC | 5J061 | |
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Methods for detecting target images | HB | CC | 5J061 | |
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.methods for detecting infrared target images | HB | CC | 5J061 | |
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Others | HB | CC | 5J061 | |
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...using amplitude comparison of signals derived from static detectors or detector systems [5] | HB | CC | 5J061 | |
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....using a mosaic of detectors [5] | HB | CC | 5J061 | |
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...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 [5] | HB | CC | 5J061 | |
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....the desired condition being maintained automatically [5] | HB | CC | 5J061 | |
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Methods for correlative tracing target images | HB | CC | 5J061 | |
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Others | HB | CC | 5J061 | |
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...using rotating reticles producing a direction-dependent modulation characteristic [5] | HB | CC | 5J061 | |
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....producing a frequency modulation characteristic [5] | HB | CC | 5J061 | |
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...using rotating or oscillating beam systems, e.g. using mirrors, prisms [5] | HB | CC | 5J061 | |
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.using ultrasonic, sonic, or infrasonic waves | HB | CC | 5J083 | |
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..Details [5] | HB | CC | 5J083 | |
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..Systems for determining direction or deviation from predetermined direction [5] | HB | CC | 5J083 | |
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...using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics [5] | HB | CC | 5J083 | |
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...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 [5] | HB | CC | 5J083 | |
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....the desired condition being maintained automatically [5] | HB | CC | 5J083 | |
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...using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems [5] | HB | CC | 5J083 | |
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...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 [5] | HB | CC | 5J083 | |
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..with means for adjusting phase or compensating for time-lag errors | HB | CC | 5J083 | |
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..with indication presented on cathode-ray tubes | HB | CC | 5J083 | |
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..with means for eliminating undesired waves, e.g. disturbing noises | HB | CC | 5J083 | |