Patents
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)
01/1992
01/15/1992EP0233273B1 Instrument landing system
01/15/1992CN2093498U Power supply automatic control switch
01/14/1992US5081459 Doppler radar for the detection and localizing of helicopters
01/14/1992US5081458 Hyperfrequency system for remote data transmission
01/14/1992US5081457 Apparatus for reducing synchronous fruit in tcas surveillance systems
01/14/1992US5081456 Method of detecting unknown object and apparatus therefor
01/14/1992US5081433 Two state phase modulator with minimum amplitude modulation
01/14/1992US5081432 Variable bi-phase modulator circuits and variable resistors for microwave signals
01/14/1992US5080390 Vehicle with plastic suspension
01/14/1992CA2046401A1 Device for identifying a localizing transponders
01/08/1992EP0464821A1 Method and means for avoiding collision between a motor vehicle and obstacles
01/07/1992US5079735 High-dynamic-range compressive receiver
01/07/1992US5079556 Coherent pulse radar system
01/07/1992US5079555 Sequential image synthesizer
01/04/1992CA2020327A1 Electronic chemical identification system
01/03/1992WO1992000531A1 Monopulse processing systems
01/02/1992EP0463665A1 Microwave vector modulator and device for matching a microwave load
01/02/1992EP0463233A2 Activatable/deactivatable security tag for use with an electronic security system
01/02/1992DE4020551A1 Machining tool checking system using microwave radar - with radar waves evaluated to check tool presence, tool type and tool size
12/1991
12/31/1991US5077673 Aircraft traffic alert and collision avoidance device
12/31/1991US5077558 Airborne wind shear detection weather radar
12/31/1991CA1293791C2 Radar system for headway control of a vehicle
12/29/1991CA2044450A1 Microwave vector modulator and device for matching a microwave load
12/28/1991WO1992000578A1 Activatable-deactivatable security tag for use with an electronic security system
12/27/1991EP0462648A2 Method of and apparatus for obtaining vehicle heading information
12/27/1991EP0386108A4 Downhole pulse radar
12/24/1991US5075863 Distance measuring method and apparatus therefor
12/24/1991US5075694 Airborne surveillance method and system
12/24/1991US5075680 Method and apparatus for monitoring vehicular traffic
12/24/1991US5075632 Automatic control using proximity sensors
12/18/1991EP0386152A4 Millimeter wave imaging device
12/17/1991US5073782 Contraband detection system
12/17/1991US5073781 Transponder
12/17/1991US5073780 Identifying targets with a radar system
12/17/1991US5073779 System for transmitting aircraft transponder beacon information
12/15/1991WO1991019997A1 Transponder system
12/11/1991EP0461093A1 A method for improving the amplitude-frequency characteristic of a radar system
12/10/1991US5072226 Radiometer system incorporating a cylindrical parabolic reflector and minimum redundancy array feed
12/10/1991US5072224 Radar system
12/10/1991US5072223 Radar system for measuring the nearest distance to an object
12/10/1991US5072222 Electromagnetic identification and location system
12/10/1991US5070730 Device for level gauging with microwaves
12/05/1991DE4030365C1 Interferometric aperture synthesis system for radiometry - measures each illuminated resolution cell several times, with each individual image being stored and processed
12/04/1991EP0459925A1 Volumetric movement detector for protection, in particular in motor cars
12/04/1991EP0459886A1 Distance-to-runway measuring device for a flying object
12/04/1991EP0458821A1 Transponder system.
12/04/1991EP0396662A4 Adaptive waveform radar
12/03/1991US5070337 Optimization method and an optimized filter for sidelobe suppression
12/03/1991US5070336 Radar guidance system correcting hardware induced channel-to-channel phase errors
12/03/1991US5070335 Pulse doppler radar systems for helicopter recognition
12/03/1991US5070334 Method and device for assisting terrestrial vehicle traffic
12/02/1991CA2043621A1 Flying object field distance measuring device
12/02/1991CA2043559A1 Movement sensor for protection namely of automobiles
11/1991
11/28/1991WO1991018354A1 Electronic vehicle toll collection system and method
11/27/1991EP0458669A1 Method for fast recognition of objects that may belong to a collection comprising a large number of objects with different caracteristics
11/27/1991EP0457880A1 Airborne iff antenna with switchable multiple diagrams.
11/27/1991EP0250453B1 Cascaded internal impedance dependent amplifier with accurate variable gain control
11/26/1991US5068666 Radar
11/26/1991US5068664 Method and device for recognizing a target
11/26/1991US5068654 Collision avoidance system
11/26/1991US5068597 Spectral estimation utilizing a minimum free energy method with recursive reflection coefficients
11/26/1991CA1292573C Air traffic control training system
11/21/1991EP0456709A1 Personalized passive identification device
11/19/1991US5066956 Azimuth-stacked radar method and apparatus
11/14/1991WO1991017457A1 Icing hazard detection for aircraft
11/13/1991EP0456329A1 Primary flight display presenting resolution advisory information provided by a traffic alert and collision avoidance system
11/13/1991EP0455842A1 Scatterometer
11/13/1991EP0171433B1 Identification system and transponder therefor
11/12/1991US5065160 Radar transponder
11/12/1991US5064141 Combined sensor guidance system
11/06/1991EP0455411A1 Correlation detector for FM signals
11/05/1991US5063386 Device for the detection of the signals of transponders interrogated by a secondary radar in the presence of multiple-path phenomena
10/1991
10/31/1991DE4013037A1 Method of mobile traffic surveillance - using moving detector vehicle with radar which detects speed of vehicles being observed
10/30/1991EP0172221B1 Terrain advisory system
10/29/1991US5061941 Composite antenna for electronic article surveillance systems
10/29/1991US5061934 Hybrid clutter cancellation method and system for improved radar performance
10/29/1991US5061933 Short-range radar system
10/29/1991US5061932 Road surface sensing system for a vehicle
10/29/1991US5061931 Recursive system for image forming by means of a spotlight synthetic aperture radar
10/29/1991CA1291557C Surface acoustic wave pipe identification system
10/23/1991EP0248878B1 A method for measuring the distance and/or the relative velocity between two objects
10/22/1991US5059968 Radar system and method of operating such system
10/22/1991US5059967 Apparatus and method for displaying weather information
10/22/1991US5059966 Synthetic aperture radar system
10/22/1991CA1291251C Radio alimenter for use with proximity fuse and fuse using the same
10/16/1991EP0452221A1 On-board velocimeter
10/16/1991EP0451987A2 In-furnace slag level measuring method and apparatus therefor
10/16/1991EP0451966A2 Method and apparatus for digital phased array imaging
10/16/1991CN1055426A Distance measuring method and apparatus therefor
10/16/1991CN1055392A In-furnace slag level measuring apparatus
10/16/1991CN1055391A In-furnace slag level measuring method and apparatus therefor
10/15/1991US5058024 Conflict detection and resolution between moving objects
10/15/1991US5057846 Efficient operation of probing radar in absorbing media
10/15/1991US5057845 Radar apparatus employing different kinds of pulses
10/15/1991US5057843 Method for providing a polarization filter for processing synthetic aperture radar image data
10/08/1991US5055850 Waveform generator
10/08/1991US5055659 High speed system for reading and writing data from and into remote tags
10/08/1991CA1290429C Closed loop velocity/altitude sensor for fm/cw doppler radars
10/08/1991CA1290428C Traffic monitoring device
10/04/1991CA2013858A1 Noise reduction in signal processing by sequency diversity