| 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) |
|---|
| 05/04/1991 | CA2029147A1 Device for detecting among multipath signals the signals of transponders interrogated by a secondary radar |
| 05/03/1991 | CA2029145A1 Electronic systems for the protection of articles |
| 05/02/1991 | EP0425382A1 Alternated bi-directional radio link system using a modulated subcarrier |
| 05/02/1991 | EP0425356A1 Method and apparatus for the recognition of a target |
| 05/02/1991 | EP0425141A2 Bistatic radar seeker with range gating |
| 05/02/1991 | EP0425006A1 FM-CW radar apparatus |
| 05/02/1991 | EP0424371A1 Method and apparatus for selectively detecting objects |
| 05/02/1991 | DE3401090C1 Monitoring aircraft projectile or missile - using two extrapolation units to predict flight path |
| 05/01/1991 | WO1991006934A1 Method for tagging articles used in conjunction with an electronic article surveillance system, and tags or labels useful in connection therewith |
| 04/30/1991 | US5012253 Radar receiver |
| 04/30/1991 | US5012249 Synthetic aperture radar system having a third order tuned auto compensator for residual antenna motion and method for its use |
| 04/30/1991 | US5012248 Radar absorption material thickness testing device |
| 04/24/1991 | EP0390779A4 Continuously armed high reliability pulse train processor |
| 04/18/1991 | DE3933437A1 Radar installation range and orientation determination - uses processors to determine range and orientation in conjunction with data reduction equipment to simplify final processing |
| 04/17/1991 | EP0422479A2 Pulse compression apparatus |
| 04/17/1991 | EP0191030B1 Digital processor for radar signals which can perform adaptive suppression of clutter means of a parametric estimator |
| 04/16/1991 | US5008859 Acoustic transponder receiver circuit |
| 04/16/1991 | US5008844 Collision avoidance transmit system with autocalibration |
| 04/16/1991 | US5008678 Electronically scanning vehicle radar sensor |
| 04/16/1991 | US5008677 Anti-jamming device for a radar provided with a reflector antenna |
| 04/16/1991 | CA1283189C Method of and apparatus for counting objects |
| 04/11/1991 | DE4004196C1 Transponder transferring stored measurement data to interrogator - operates without battery using capacitor charged by rectified HF pulses |
| 04/11/1991 | DE3224546A1 Three=dimensional scanning for radar aerial - carrying out scanning for very small reflecting section in region of top limit angle of elevation swivel |
| 04/10/1991 | EP0341254B1 Identification and/or localization system and beacon |
| 04/10/1991 | EP0229772B1 A method of motion compensation in synthetic aperture radar target imaging and a system for performing the method |
| 04/10/1991 | CN1050607A Device for determining topographic map of loading surface of shaft furnace |
| 04/09/1991 | US5007068 Doppler-corrected differential detection system |
| 04/09/1991 | US5006856 Electronic article surveillance tag and method of deactivating tags |
| 04/09/1991 | US5006855 Ranging and processing system for mobile surveillance and data link |
| 04/03/1991 | EP0420313A1 Ground velocity sensor with drop-out detection |
| 04/03/1991 | EP0420180A1 Transponder for vehicle identification device |
| 04/02/1991 | USH910 Adaptive two dimensional shading for batch synthetic aperture radar using phased array antenna |
| 04/02/1991 | US5005147 For determining the shape of a remote surface |
| 03/28/1991 | DE3501953C1 Method of target location in radar system - has radiation transmitter with antenna, and divides echo signal into sequence of steradian values |
| 03/28/1991 | DE3501952C1 Method of locating targets by reflected beam - measures frequency of reflected signal using monostatic radar system at transmitter, or multiple remote multistatic radar |
| 03/28/1991 | DE3247424C1 Measuring Doppler-speed for pulse-Doppler radar equipment - by azimuthal block-by-block Doppler processing of echo signals in Doppler filter, with different pulse sequence frequency for each block |
| 03/27/1991 | CN1012219B Distant tracking method for continuously finding moving object |
| 03/26/1991 | US5003317 Stolen vehicle recovery system |
| 03/26/1991 | US5003313 Method and arrangement for improving the angular resolution of a monopulse radar |
| 03/20/1991 | EP0418205A2 Radar arrangement |
| 03/20/1991 | EP0418181A1 Radio-electrical system for localizing a mobile object |
| 03/20/1991 | EP0417939A2 Radar system |
| 03/19/1991 | US5001751 Mode 4 reply decoder |
| 03/19/1991 | US5001490 Multifunction radar techniques |
| 03/19/1991 | US5001488 Battlefield IFF method and system for its application |
| 03/19/1991 | US5001486 Radar system for determining the position of two or more objects |
| 03/13/1991 | EP0417045A1 Apparatus for data transmission |
| 03/13/1991 | EP0416745A2 Intruder alarm system |
| 03/13/1991 | EP0416692A2 Communicating information by radio |
| 03/12/1991 | US4999782 An area navigation system |
| 03/12/1991 | US4999636 Range limiting system |
| 03/12/1991 | US4999635 Phase difference auto focusing for synthetic aperture radar imaging |
| 03/08/1991 | CA2024734A1 Device for determining the topographic map of the loading surface of a shaft furnace |
| 03/07/1991 | WO1991003109A1 A method for the contactless transmission of information |
| 03/06/1991 | EP0415906A1 Method and device for the determination of parameters of motion |
| 03/05/1991 | US4998110 Power stabilizer and isolation/coupler network |
| 02/28/1991 | DE4024723A1 Electronic article monitoring label |
| 02/28/1991 | DE3928002A1 Reducing false alarms originating from HF movement alarm - using stepped adjustment of transmitted frequency and fourier analysis of complex ECHO signals |
| 02/27/1991 | EP0414567A2 Frequency modulated continuous wave radar receiver |
| 02/27/1991 | EP0322454B1 Analog-digital correlator |
| 02/26/1991 | US4996534 Processing of concatenated radar measurements to re-establish signal phase coherence |
| 02/26/1991 | US4996533 Single station radar ocean surface current mapper |
| 02/26/1991 | US4996532 Digital beam forming radar system |
| 02/26/1991 | CA2022878A1 Radar receiver |
| 02/21/1991 | WO1991002382A1 Fine movement device |
| 02/20/1991 | CN1011738B Dynamic imaging radar |
| 02/19/1991 | US4995102 Scanning method used by laser radar and laser radar for carrying out the method |
| 02/19/1991 | US4994811 Sensitivity time control device |
| 02/19/1991 | US4994810 Monopulse processor digital correction circuit |
| 02/19/1991 | US4994809 Polystatic correlating radar |
| 02/14/1991 | DE3926216A1 Multi-function radar with electronic phase-controlled antenna |
| 02/14/1991 | DE3926215A1 Multi-function radar with electronic phase-controlled antenna |
| 02/14/1991 | DE3926198A1 Multi-function radar with electronic phase-controlled antenna |
| 02/14/1991 | DE3926197A1 Multi-function radar with electronic phase-controlled antenna |
| 02/14/1991 | DE3925921A1 Contactless distance measurement of objects or distance changes - measuring changing voltage value and limiting permissible distances to specified region |
| 02/13/1991 | EP0412884A1 Radio system for data transmission to a low cost passive terminal |
| 02/13/1991 | EP0412719A1 Road surface sensing system for a vehicle |
| 02/13/1991 | EP0412441A2 Multifunctional radar |
| 02/12/1991 | US4992797 Method of detection and identification of one or more remote objects |
| 02/12/1991 | US4992796 Detection |
| 02/12/1991 | US4992795 Method and device for the validation of plots, for radar, with self-adaptive updating |
| 02/12/1991 | US4992794 Transponder and method for the production thereof |
| 02/07/1991 | DE3924284A1 Generating trigger pulse derived from input pulse - which is digitalised and obtained code words are sequentially compared for use as peak value |
| 02/06/1991 | EP0411309A1 Three-dimensional perspective plan-view format for situation awareness displays |
| 02/05/1991 | US4990921 Aircraft |
| 01/31/1991 | DE3922085C1 Close distance measurer for two motor vehicles - sends light pulses and HF pulses for evaluation for safety precaution |
| 01/30/1991 | EP0410870A1 Apparatus for spectrum analysis of a numerical signal |
| 01/30/1991 | EP0410594A2 Locating system |
| 01/30/1991 | EP0410563A2 Pulse compressing apparatus for a radar system using a long pulse |
| 01/29/1991 | US4989010 Method and device for identical processing of several simultaneous analog signals of short duration and tracking radar using this device |
| 01/29/1991 | US4989009 Digital range correlator |
| 01/29/1991 | US4989008 Spotlight mapping radar system |
| 01/29/1991 | US4988994 Traffic monitoring device |
| 01/29/1991 | CA1279716C Passive transponder |
| 01/24/1991 | WO1991001031A1 Device and process for transmitting information |
| 01/24/1991 | DE4021167A1 Doppler microwave device for speed-distance measurement - has interdigitated counter-terminating dual antenna to save space |
| 01/24/1991 | DE3922677A1 Geraet und verfahren zum vermitteln von informationen Apparatus and method for convey of information |
| 01/23/1991 | EP0409219A2 Recursive system for image forming by means of a spotlight synthetic aperture radar |
| 01/23/1991 | EP0409016A2 System and method for locating labelled objects |
| 01/22/1991 | US4987419 Stabilizing air to ground radar |