| Patents for G01S 13 - 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 (37,701) |
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| 01/31/1978 | US4071907 Radar signal processor utilizing a multi-channel optical correlator |
| 01/31/1978 | US4071844 Frequency control for frequency agile pulse radar |
| 01/24/1978 | US4070675 Power rejection apparatus using a null-constrained subarray for MTI radar applications |
| 01/24/1978 | US4070674 Doppler heading attitude reference system |
| 01/24/1978 | US4070673 Radar video digital processor |
| 01/24/1978 | US4070635 Delay line oscillator with phase locked loop for reducing phase fluctuations |
| 01/17/1978 | US4069482 Target range sensor |
| 01/17/1978 | US4069472 Foreground subject-identifying apparatus |
| 01/10/1978 | US4068235 Frequency diversity radar system |
| 01/10/1978 | US4068234 Frequency scanned illumination imaging array |
| 01/10/1978 | US4068232 Passive encoding microwave transponder |
| 01/10/1978 | US4068211 Vehicle identification system having error detection means |
| 01/03/1978 | US4067014 Correlation receiver for doppler microwave landing system |
| 01/03/1978 | US4067012 Tracking feedback clutter mapper control device |
| 01/03/1978 | US4067011 Digital transponder universal pulse assembly |
| 01/03/1978 | US4067010 Circuit for inhibition of autogenetic false alarms in a collision avoidance system |
| 01/03/1978 | US4067009 Beam focused synthetic aperture |
| 01/03/1978 | US4066970 Pulse shaper for coaxial cable system |
| 12/27/1977 | US4065771 Random scanning receiver |
| 12/27/1977 | US4065768 Radar apparatus |
| 12/27/1977 | US4065711 Chopper assisted uninterruptible power supply |
| 12/20/1977 | US4064533 CCD focal plane processor for moving target imaging |
| 12/20/1977 | US4064511 Clutter subtraction system |
| 12/20/1977 | US4064510 High repetition frequency side-looking pulse radar system |
| 12/13/1977 | US4063240 Electronic docking system |
| 12/13/1977 | US4063239 Range or doppler gate deception rejection system |
| 12/13/1977 | US4063238 Range tracking apparatus in a doppler radar |
| 12/13/1977 | US4063237 Distance measuring system, particularly for spacing of moving vehicles |
| 12/06/1977 | US4062011 MTI System processor and method |
| 12/06/1977 | US4062010 Underground pipe detector |
| 11/29/1977 | US4060807 Low angle radar |
| 11/29/1977 | US4060805 Integrated terminal area surveillance system |
| 11/22/1977 | US4059831 Passive transponders using acoustic surface wave devices |
| 11/22/1977 | US4059052 Fuze modulation system |
| 11/15/1977 | US4058809 MTI system and method |
| 11/08/1977 | US4057801 Continuous-wave ranging system |
| 11/08/1977 | US4057800 Multi-PRF signal processor system |
| 11/08/1977 | US4057786 Recirculating delay line time compressor having plural input taps |
| 10/18/1977 | US4054872 Pulse doppler radar receiver having a moving curve transit time filter |
| 10/18/1977 | US4054871 Electromagnetic intrusion sensor |
| 10/11/1977 | US4053889 Receiver for a homing system |
| 10/11/1977 | US4053888 Arrangement for measuring the lag between two timed signals by electronic correlation |
| 10/11/1977 | US4053887 Doppler radar system |
| 10/11/1977 | US4053886 Stepped dual-frequency, ocean-wave spectrometer |
| 10/11/1977 | US4053885 Moving target indication radar |
| 10/11/1977 | US4053884 High prf unambiguous range radar |
| 10/11/1977 | US4053883 Fixed dual beam range scanning and tracking radar with digital display |
| 10/11/1977 | US4053880 Keying apparatus |
| 10/11/1977 | US4053026 Logic circuit for an automatic braking system for a motor vehicle |
| 10/04/1977 | US4052722 Traffic radar and apparatus therefor |
| 10/04/1977 | US4052721 Multi-target tracker for tracking near co-range targets |
| 09/27/1977 | US4051472 Large area motion sensor using pseudo-random coding technique |
| 09/20/1977 | US4050071 Bi-static radar speed sensor |
| 09/20/1977 | US4050070 Programmable microwave modulator |
| 09/20/1977 | US4050069 Transponder based landing system |
| 09/20/1977 | US4050068 Augmented tracking system |
| 09/20/1977 | US4050067 Airborne microwave path modeling system |
| 09/20/1977 | US4049953 Complex pulse repetition frequency generator |
| 09/13/1977 | USRE29401 Method and apparatus for digitally measuring speed |
| 09/13/1977 | US4048637 Radar system for detecting slowly moving targets |
| 09/13/1977 | US4048636 Secondary radar/iff anti-target splitting azimuth determiner |
| 09/13/1977 | US4048613 Alarm system for emergency braking |
| 09/06/1977 | US4047179 IFF antenna arrangement |
| 09/06/1977 | US4047173 FM pulse compression radar |
| 09/06/1977 | US4047171 Transponder |
| 09/06/1977 | US4047057 Monostable switching circuit |
| 08/30/1977 | US4045799 Radio locating unit for persons in distress |
| 08/30/1977 | US4045797 Radar doppler frequency measuring apparatus |
| 08/30/1977 | US4045796 Correlation system for pseudo-random noise signals |
| 08/30/1977 | US4045795 Charge-coupled device data processor for an airborne imaging radar system |
| 08/23/1977 | US4044377 Video target locator |
| 08/23/1977 | US4044356 Process and device for correlation for use in a doppler radar installation |
| 08/23/1977 | US4044355 Measurement of contents of tanks etc. with microwave radiations |
| 08/23/1977 | US4044354 Distance measurement using microwaves |
| 08/23/1977 | US4044353 Microwave level gaging system |
| 08/23/1977 | US4044318 Ganged radio frequency filter |
| 08/16/1977 | US4042934 Doppler radar module employing coupled rectangular waveguides |
| 08/16/1977 | US4042927 Ability of a monopulse radar to resolve and track jammers passively |
| 08/16/1977 | US4042926 Automatic transponder |
| 08/16/1977 | US4042925 Pseudo-random code (PRC) surveilance radar |
| 08/16/1977 | US4042924 MTI clutter tracking and cancelling system |
| 08/16/1977 | US4042923 Radar trilateralization position locators |
| 08/16/1977 | US4042922 Multi-mode radar system |
| 08/09/1977 | US4041491 Method and apparatus for determining the altitude of a signal propagation path |
| 08/09/1977 | US4041490 Measurement system calibrated to be insensitive to temperature variation induced changes in internal phase shifts present in the system |
| 08/09/1977 | US4041489 Sea clutter reduction technique |
| 08/09/1977 | US4041488 Doppler radar system |
| 08/09/1977 | US4041487 Low elevation angle radar tracking system |
| 08/09/1977 | US4041486 Pulse stream identification circuit |
| 08/09/1977 | US4041485 Split gate tracker using bipolar converter |
| 08/09/1977 | US4041341 Doppler-radar terrain-clearance warning system |
| 08/09/1977 | US4041293 Method of measuring the velocity of an object relative to a reference and a device for effecting said method |
| 08/02/1977 | US4040057 Clutter filter for pulse doppler radar |
| 08/02/1977 | US4040054 Tracking of radar signals |
| 08/02/1977 | US4040053 Transponder system for the transfer of signalling information for rail-bounded vehicles |
| 08/02/1977 | US4039951 Method and apparatus for digitally controlling an amplitude modulated pulse envelope on an rf signal |
| 08/02/1977 | US4039782 Or a light beam in motor vehicles |
| 07/26/1977 | US4038659 Frequency agility radar |
| 07/26/1977 | US4038658 Moving target speed and direction determining radar system |
| 07/26/1977 | US4038657 Intermittent range tracker |