| Patents for G01S 3 - 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 (11,105) | 
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| 01/14/1986 | US4564275 Automatic heliostat track alignment method | 
| 01/08/1986 | EP0167432A1 Airborne optoelectrical target detection, localisation and omnidirectional tracking system | 
| 01/02/1986 | EP0166367A2 Antenna tracking device | 
| 01/02/1986 | EP0166352A2 Arrangement for pointing a directable device towards a light source | 
| 12/31/1985 | CA1198805A1 Determination of system response | 
| 12/27/1985 | EP0165460A1 Interferometric direction-finding device | 
| 12/27/1985 | EP0165459A1 Interferometric direction-finding device | 
| 12/19/1985 | WO1985005694A1 Device in an echo sounding or sonar system | 
| 12/18/1985 | EP0165169A2 Processing method of a video image for tracking a luminous object and for protecting this tracking against other jamming luminous objects | 
| 12/17/1985 | US4559605 Method and apparatus for random array beamforming | 
| 12/10/1985 | US4558439 Passive method for obtaining target data from a sound source | 
| 12/04/1985 | EP0162858A1 Acoustic direction identification system. | 
| 12/03/1985 | US4556788 Amorphous silicon cell array powered solar tracking apparatus | 
| 11/21/1985 | EP0161940A2 Radio direction finding for locating lightening ground strikes | 
| 11/19/1985 | CA1197002A1 Finding the direction of a sound | 
| 11/13/1985 | EP0161059A1 Phase shifter | 
| 11/12/1985 | CA1196697A1 Phase control device | 
| 11/05/1985 | US4551727 Radio direction finding system | 
| 11/05/1985 | CA1196420A1 Method and apparatus for steering an aerodynamic body having a homing device | 
| 10/30/1985 | EP0159840A2 Radiation detector arrays | 
| 10/29/1985 | US4550435 Multilevel thresholding for target tracking apparatus | 
| 10/22/1985 | US4549211 Four-quadrant gate-sizing technique | 
| 10/15/1985 | US4547677 Radiation detecting apparatus for detecting a brief radiation signal | 
| 10/10/1985 | WO1985004490A1 Finding the direction of a sound | 
| 10/08/1985 | CA1194989A1 Antenna device for direction finder | 
| 10/08/1985 | CA1194934A1 Boolean filtering method and apparatus | 
| 09/25/1985 | EP0155666A2 Solar tracking mechanisms | 
| 09/17/1985 | US4542326 Automatic antenna positioning system | 
| 09/04/1985 | EP0153466A1 Wireless communication system | 
| 09/03/1985 | US4539681 Ferrite modulator assembly for beacon tracking system | 
| 09/03/1985 | US4539598 Image readout method and device | 
| 09/03/1985 | US4539590 Method and apparatus for processing optical tracking signals | 
| 08/28/1985 | EP0152523A2 Method of localizing signal sources with interference suppression | 
| 08/27/1985 | CA1192656A1 Reflector distortion compensation system for multiple- beam wave transmission and/or reception antennas | 
| 08/07/1985 | EP0150526A2 Sonobuoy retaining and release apparatus | 
| 08/06/1985 | US4532807 Method and apparatus for detecting sound source | 
| 08/01/1985 | WO1985003359A1 Method of processing sensor elements | 
| 07/30/1985 | US4532639 CFAR receiver apparatus for detecting a signal in noise | 
| 07/30/1985 | US4532637 Differential receiver | 
| 07/17/1985 | EP0148672A1 Single-channel radio direction finder using the difference in time of arrival and adapted to process amplitude-modulated signals of the A3J or A1 type | 
| 07/16/1985 | US4530076 Frequency domain non-linear signal processing apparatus and method for discrimination against non-Gaussian interference | 
| 07/16/1985 | US4529151 Method and an apparatus for steering an aerodynamic body having a homing device | 
| 07/09/1985 | US4528567 Radio signal receiving system | 
| 07/09/1985 | US4528566 Transmitter and receiver locating device | 
| 07/09/1985 | CA1190317A1 Primary source with frequency re-utilization | 
| 07/02/1985 | US4527158 Aircraft collision pilot warning indicating system | 
| 06/26/1985 | EP0146428A1 Automatic guiding method and apparatsu for moving objects especially for driverless self-propelled vehicles | 
| 06/19/1985 | EP0145148A2 Flotation bag assembly | 
| 06/19/1985 | EP0145069A2 Sonobuoy multiple depth deployment apparatus | 
| 05/28/1985 | US4520325 Phase shifters | 
| 05/28/1985 | US4519382 Control system for heliostats and method | 
| 05/09/1985 | WO1985002022A1 Acoustic direction identification system | 
| 05/07/1985 | US4516263 Spatially integral, video signal processor | 
| 05/07/1985 | US4516018 Solar sensing arrangement for use in a uniaxis solar collector tracking system | 
| 05/02/1985 | EP0139292A2 Navigation apparatus for mobile system | 
| 05/02/1985 | EP0138858A1 Photodetector system to determine, respectively measure the position of one or a plurality of light sources | 
| 04/23/1985 | US4513201 Thermocouple detector | 
| 04/17/1985 | EP0137745A2 Direction finding systems | 
| 04/09/1985 | US4510498 Plate antenna for direction finder | 
| 04/09/1985 | US4510385 Solar tracking system employing inertial coasting | 
| 03/27/1985 | EP0135065A1 Star sensor using CCD | 
| 03/26/1985 | US4507665 Primary source with frequency re-utilization | 
| 03/26/1985 | US4507663 Automatic direction finder | 
| 03/20/1985 | EP0134488A1 Thermal imaging system with row multiplexed/optically linked focal plane arrays | 
| 03/19/1985 | CA1184280A1 Navigation system | 
| 03/12/1985 | CA1183928A1 Path indicating apparatus of moving vehicle | 
| 03/12/1985 | CA1183708A1 Optical scanning apparatus incorporating counter- rotation of elements about a common axis by a common driving source | 
| 03/05/1985 | US4503382 Method and device for centroid detection of a beam of electromagnetic energy | 
| 03/05/1985 | US4502783 Alignment stabilization prism | 
| 02/28/1985 | WO1985000895A1 Direction finding interferometer internal calibration system | 
| 02/19/1985 | US4500980 Seismic streamer connector assembly | 
| 02/12/1985 | US4499472 Sequentially steered receiver with timed recycle calibration | 
| 02/12/1985 | US4498768 Angle of arrival meter | 
| 01/30/1985 | EP0132382A2 Direct satellite broadcast receiving system | 
| 01/29/1985 | US4496833 For locating a target | 
| 01/22/1985 | US4495408 Sunlight direction sensor | 
| 01/15/1985 | US4494118 Direction finding interferometer internal calibration system | 
| 01/09/1985 | EP0130638A1 Unambiguous R.F. direction-finding system | 
| 01/08/1985 | US4492859 Dual axes multiple prism optical system for azimuth and elevation variation detection | 
| 12/25/1984 | US4490039 Wave front sensor | 
| 12/18/1984 | USRE31772 Digital bearing indicator | 
| 12/18/1984 | US4489390 For image data processing to enhance an image | 
| 12/18/1984 | US4489327 For assessing the bearing of a received radio signal | 
| 12/18/1984 | US4489313 Signal direction determining system and directional loop antenna array therefor | 
| 12/18/1984 | US4488876 Aimpoint processor for quantizing target data | 
| 12/11/1984 | US4488233 Path indicating apparatus of moving vehicle | 
| 12/11/1984 | CA1179225A1 Sun position sensor for two axis tracking | 
| 12/04/1984 | US4486757 Automatic direction finder | 
| 11/27/1984 | US4485479 Phase control device | 
| 11/27/1984 | US4484565 Device for sensing moving light source | 
| 11/21/1984 | EP0125838A2 Direction finding | 
| 11/13/1984 | US4482970 Boolean filtering method and apparatus | 
| 11/06/1984 | US4481519 Radio frequency signal direction finding apparatus | 
| 10/30/1984 | US4480322 For submarines | 
| 10/16/1984 | US4476853 Solar energy recovery system | 
| 10/11/1984 | WO1984003950A1 Four-quadrant gate-sizing technique | 
| 10/09/1984 | US4476494 Apparatus for centering and stabilizing the size of a target image | 
| 10/02/1984 | US4475106 High sensitivity portable radio direction finder | 
| 10/02/1984 | CA1175563A1 Apparatus and method for determination of a receiving device relative to a transmitting device utilizing curl-free magnetic vector potential field | 
| 09/27/1984 | WO1984003774A1 Photodetector system to determine, respectively measure the position of one or a plurality of light sources |