| 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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| 04/25/1990 | EP0364469A1 Synthetic aperture radar. |
| 04/25/1990 | CN1041654A Distance measuring method and apparatus therefor |
| 04/24/1990 | US4920347 Pulse doppler radar system |
| 04/24/1990 | US4920345 Device operating on the doppler principle to determine the distance traveled by a vehicle |
| 04/19/1990 | DE3834967A1 Verfahren zur bestimmung der ortslage von beweglichen grenzen zwischen biologischen geweben und einrichtung zu dessen durchfuehrung Method for the determination of the limits specified location of movable between biological tissues and device for carrying it out |
| 04/18/1990 | EP0364333A1 Method and apparatus for radar plot validation with self-adapting updating |
| 04/18/1990 | EP0364045A1 Transponder and method for the production thereof |
| 04/18/1990 | EP0364036A2 Continuously transmitting and receiving radar |
| 04/17/1990 | US4918610 Navigation, communication, and surveillance system based on DME |
| 04/17/1990 | US4918458 Secondary radar transponder |
| 04/17/1990 | US4918456 Apparatus for detecting heterogeneity of water surface |
| 04/11/1990 | EP0362992A2 Distance measuring method and apparatus therefor |
| 04/11/1990 | EP0362984A2 Signal discrimination system |
| 04/11/1990 | EP0362914A2 Surveillance radar |
| 04/10/1990 | US4916452 Process for range measurement with a pulse radar of high pulse repetition frequency |
| 04/10/1990 | US4916450 Radar system for headway control of a vehicle |
| 04/10/1990 | US4916448 Low altitude warning system for aircraft |
| 04/05/1990 | WO1990003456A1 Metal-recovery device |
| 04/04/1990 | CN2055602U Sensing device for testing three-dimensional displacement movement of animal |
| 04/03/1990 | USH767 Ranging method and system, especially for radar signal processing for ambiguous range radars |
| 04/03/1990 | US4914735 Propagation time detecting system with use of detected phase difference of transmitted and received subcarrier |
| 04/03/1990 | US4914734 Intensity area correlation addition to terrain radiometric area correlation |
| 04/03/1990 | US4914733 Traffic advisory-instantaneous vertical speed display |
| 04/03/1990 | US4914639 Sonar doppler system with a digital adaptive filter |
| 04/03/1990 | US4914442 Adaptive MTI target preservation |
| 04/03/1990 | US4914441 Method of processing in a pulse doppler radar |
| 03/29/1990 | DE3832674A1 Metallrueckgewinnungs-vorrichtung Metallrueckgewinnungs-device |
| 03/28/1990 | EP0359911A2 Radar altimeter |
| 03/27/1990 | US4912477 Radar system for determining angular position utilizing a linear phased array antenna |
| 03/27/1990 | US4912474 Radar apparatus for realizing a radio map of a site |
| 03/27/1990 | US4912473 Radar equipment |
| 03/27/1990 | US4912472 FM-CW radar apparatus |
| 03/27/1990 | US4912471 Interrogator-responder communication system |
| 03/27/1990 | CA1267206A1 Instrument landing system |
| 03/22/1990 | WO1990002985A1 Automatic anti-collision process and device for autonomous vehicles |
| 03/21/1990 | CN1007293B Positioning and message-transfering system employing satellites and stored topographic map |
| 03/20/1990 | US4910526 Airborne surveillance method and system |
| 03/20/1990 | US4910523 Micrometer wave imaging device |
| 03/20/1990 | US4910521 Dual band communication receiver |
| 03/20/1990 | US4910520 High speed synthetic radar processing system |
| 03/15/1990 | DE3830790A1 Verfahren und vorrichtung zur automatischen kollisionsvermeidung fuer automatisch fuehrbare fahrzeuge Method and apparatus for automatic collision avoidance for automatically Viable vehicles |
| 03/14/1990 | EP0357855A1 Drive alerting device |
| 03/13/1990 | US4908629 Apparatus for locating and/or tracking stolen or missing vehicles and the like |
| 03/13/1990 | US4908628 Radar apparatus |
| 03/13/1990 | US4908627 Monitoring, ranging and locating devices |
| 03/13/1990 | US4908626 Communication system for radar ground systems |
| 03/13/1990 | US4908625 Device for processing signals from a side-looking radar |
| 03/13/1990 | US4908615 Traffic light control system and method |
| 03/13/1990 | CA1266707A1 Method of calibrating and equalizing a multi-channel automatic gain control amplifier |
| 03/08/1990 | DE3928573A1 Radiowellen-antwortsendervorrichtung in einem antwortsendersystem Radio wave transmitter answering device in a reply transmitter system |
| 03/07/1990 | EP0356503A1 System for correcting the trajectory of a missile |
| 03/06/1990 | US4907001 Extraction of radar targets from clutter |
| 03/06/1990 | US4907000 Transmission reception system for frequency-agile doppler radars |
| 03/06/1990 | US4906999 Detection system for locating aircraft |
| 02/28/1990 | EP0355336A1 Radar system for position determination of two or more objects |
| 02/27/1990 | US4905010 Method for balancing channels in a multichannel pulse radar system and a radar system using this method |
| 02/27/1990 | US4905009 Distance measuring device |
| 02/27/1990 | US4905008 Radar type underground searching apparatus |
| 02/22/1990 | WO1990001708A1 Remote passive identification method and device for implementing such method |
| 02/22/1990 | WO1990001707A1 Sports speedometer |
| 02/21/1990 | EP0219392B1 Shifting, non-recursive, discrete fourier transform computing device, and its use in a radar system |
| 02/20/1990 | US4903243 Marine transponder system |
| 02/20/1990 | US4903030 Angular discrimination process and device for radar |
| 02/14/1990 | EP0354302A1 Method of identifying ships |
| 02/14/1990 | EP0354225A1 Process for adapting the frequency band of an oscillating circuit made from a metal-plastic-metal sandwich foil useful as an identification label. |
| 02/14/1990 | CN2052907U Automatic guard radar |
| 02/14/1990 | CN1039661A Display method and equipment for automatic radar plotting instrument |
| 02/13/1990 | US4901084 Object detection and location system |
| 02/13/1990 | US4901083 Near obstacle detection system |
| 02/13/1990 | US4901082 Adaptive waveform radar |
| 02/08/1990 | WO1990001202A1 Improvements to aircraft collision avoidance |
| 02/07/1990 | EP0354115A1 Microwave transceiver for displaying concealed objects |
| 02/07/1990 | EP0354075A1 Method for remote passive identification, and apparatus for carrying out this method |
| 02/06/1990 | USH741 Discrete complex correlation device for obtaining subpixel accuracy |
| 02/06/1990 | US4899163 Microwave plate antenna in particular for Doppler radar |
| 02/06/1990 | US4899161 High accuracy coordinate conversion method for air traffic control applications |
| 02/06/1990 | US4899158 Moving object discriminating system |
| 02/06/1990 | US4899157 In a pulse code communications system |
| 02/06/1990 | US4899156 Virtual ATCRBS using signals of remote SSR |
| 01/31/1990 | EP0353183A1 Radar sonde for the automatic individual control of sanitary fittings |
| 01/31/1990 | EP0352936A2 Deactivatable frequency-dividing-transponder tag |
| 01/30/1990 | US4897661 Method and apparatus for determining the position of a vehicle |
| 01/30/1990 | US4897660 Structure resonant radar detection apparatus and method |
| 01/30/1990 | US4897659 Communication receiver |
| 01/30/1990 | CA1265226A1 Log magnitude pulse interference detection for a radar system |
| 01/25/1990 | WO1990000749A1 Method and apparatus for selectively detecting objects |
| 01/25/1990 | WO1990000744A1 Process and device for remote enquiry passive identification |
| 01/24/1990 | EP0351934A1 Radar system using electronically steerable active transmit-receive modules |
| 01/24/1990 | EP0351654A2 High accuracy coordinate conversion method for air traffic control applications |
| 01/24/1990 | EP0351598A2 Method for reply rate limiting |
| 01/23/1990 | USRE33152 Radar detection of hazardous small scale weather disturbances |
| 01/23/1990 | US4896159 Radar system with pulse-to-pulse frequency agility and multiple-time-around echo resolution |
| 01/23/1990 | US4896158 Beacon fruit filter |
| 01/23/1990 | US4896116 Pulse radar method and apparatus for detecting an object |
| 01/23/1990 | US4895441 For measuring absolute distance to a target |
| 01/23/1990 | CA1264841A1 Digital device for the in-line measurement of background noise for mti radar with suppression of samples not originating from noise |
| 01/23/1990 | CA1264840A1 Identification system |
| 01/18/1990 | DE3824163A1 Separating sensor |
| 01/17/1990 | EP0351267A1 Apparatus and method for passive identification by remote interrogation |
| 01/17/1990 | EP0350998A1 Target detector |