| 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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| 06/14/1977 | US4030099 Digital antenna control apparatus for a communications terminal |
| 06/07/1977 | US4028624 Electronic switching arrangement for a homing and traffic radio system |
| 06/07/1977 | US4028544 Radiant energy detection system |
| 05/31/1977 | US4027160 Infrared detection system with parallel strip reticle means |
| 05/24/1977 | US4025924 Mobile direction comparator |
| 05/24/1977 | US4025920 Identification of radar systems |
| 05/10/1977 | US4023202 Television tracking symbol generator |
| 05/10/1977 | US4023178 Radio-controlled vehicle with RF noise elimination feature and with ultrasonic anti-collision means insensitive to mechanical shocks |
| 05/10/1977 | US4023177 Automatic radio compass |
| 05/10/1977 | US4023172 Monopulse system for cancellation of side lobe effects |
| 04/19/1977 | US4019184 Direction-finding method and system |
| 04/19/1977 | US4018532 Sun direction detection system |
| 04/12/1977 | US4017859 Multi-path signal enhancing apparatus |
| 04/12/1977 | US4017854 Apparatus for angular measurement and beam forming with baseband radar systems |
| 04/12/1977 | US4017822 Bearing determining apparatus including single channel multiplexing |
| 03/22/1977 | US4014023 Beam former utilizing geometric sampling |
| 03/22/1977 | US4013885 Solar energy sun tracker |
| 03/22/1977 | US4013832 Solid state image modulator |
| 03/15/1977 | US4012740 Radio-frequency direction-finding arrangement |
| 03/08/1977 | US4011565 Method of determining ionospheric reflection height |
| 03/08/1977 | US4010614 Solar radiation collector and system for converting and storing collected solar energy |
| 03/01/1977 | US4010365 Self-stabilizing image scanner |
| 02/22/1977 | US4009393 Dual spectral range target tracking seeker |
| 02/01/1977 | US4006356 Radiant energy tracking device |
| 01/25/1977 | US4004574 Solar energy concentrating and collecting arrangement with sun-follower and solar energy sensing power control and method |
| 01/25/1977 | US4004309 Hydrodynamic stabilizing device |
| 01/18/1977 | US4004083 Method and apparatus for determining centroid coordinates and angular orientation of a surface |
| 01/11/1977 | US4003060 Direction finding receiver |
| 01/11/1977 | US4003057 Rear window direction finding antenna |
| 01/04/1977 | US4001828 Beacon tracking receiver |
| 12/28/1976 | US3999859 Device for checking radio aerial navigational aids |
| 12/21/1976 | US3998206 System for collecting and utilizing solar energy |
| 12/14/1976 | US3997774 Method of increasing the signal-to-noise ratio of a time-dependent scanning signal during performance of a periodic scanning method |
| 12/14/1976 | US3996917 Solar heating apparatus |
| 12/07/1976 | US3996590 Method and apparatus for automatically detecting and tracking moving objects and similar applications |
| 12/07/1976 | US3996460 Solar tracking control system using shadow detection |
| 11/30/1976 | US3994600 Solid state star scanner |
| 11/16/1976 | US3992666 Technique for detecting energy and determining the frequency of constituent energy components |
| 11/16/1976 | US3992619 Optical scanner |
| 11/16/1976 | US3992101 Scanning optical spectral analyzer employing plural detectors |
| 11/16/1976 | US3992099 Source discriminator for measuring angle of arrival and wavelength of radiant energy |
| 11/09/1976 | US3991418 Electromagnetic wave direction finding using Doppler techniques |
| 11/02/1976 | US3989942 Retro-reflecting laser responser and data modulator |
| 10/26/1976 | US3988534 Electro-optical tracking computer utilizing television camera |
| 10/19/1976 | US3987446 Direction finding apparatus |
| 10/19/1976 | US3987404 Underwater direction finding system |
| 10/19/1976 | US3987243 Image enhancement method and apparatus |
| 10/12/1976 | US3986161 Underwater directional guidance apparatus |
| 10/12/1976 | US3986021 Passive solar tracking system for steerable Fresnel elements |
| 09/14/1976 | US3981016 Antenna apparatus for detecting an optimum directivity |
| 09/14/1976 | US3980984 Underwater connector |
| 09/07/1976 | US3979712 Sensor array acoustic detection system |
| 08/31/1976 | US3978483 Stable base band adaptive loop |
| 08/31/1976 | US3978445 Asw intercept localization sonar |
| 08/31/1976 | US3977628 Tracking and/or guidance systems |
| 08/24/1976 | US3976969 Underwater sound wave direction finding system |
| 08/17/1976 | US3975735 Discharge pipe line locator |
| 08/17/1976 | US3974682 Ultra sound examining device |
| 08/10/1976 | US3974328 Line scan area signature detection system |
| 08/03/1976 | US3973262 Radio direction finder with means for reducing sensitivity to multipath propogation errors |
| 07/27/1976 | US3971939 Ir seeker |
| 07/27/1976 | US3971921 Apparatus for distinguishing time varying analog signals |
| 07/20/1976 | US3971027 Radio interferometer sector-definition |
| 07/20/1976 | US3970990 Adaptive imaging system |
| 06/29/1976 | US3967280 Direction finding system with integrated loop and sense antenna assembly |
| 06/29/1976 | US3967279 Self-phasing array with a time-shared processor |
| 06/22/1976 | US3965473 Direction finders |
| 06/08/1976 | US3962671 Calibration transducer |
| 06/01/1976 | US3961194 Tracking and display apparatus for heat-detecting systems |
| 05/04/1976 | US3955046 Improvements relating to automatic target following apparatus |
| 05/04/1976 | US3954340 Method of and apparatus for target tracking |
| 04/27/1976 | US3953856 Method and apparatus for mapping and similar applications |
| 04/27/1976 | US3953670 Adaptive video centroid tracker |
| 04/27/1976 | US3953669 Video tracking system |
| 04/20/1976 | US3952208 Device for controlling the position of a first body relative to that of a second body |
| 04/20/1976 | US3951550 Direction-sensing virtual aperture radiation detector |
| 04/20/1976 | US3951358 Guidance and control system for target-seeking devices |
| 04/13/1976 | US3950611 Gated video centroid tracker |
| 03/30/1976 | US3947805 Device for determining the direction of a plane wave |
| 03/30/1976 | US3947804 Range-bearing computer |
| 03/30/1976 | US3947803 Direction finding system |
| 03/30/1976 | US3947628 Device for selective search of objects using images thereof |
| 03/23/1976 | US3946395 Radio direction finding apparatus |
| 03/23/1976 | US3946355 Multiplexing device for panoramic sonar systems |
| 03/16/1976 | US3944967 Updated diver navigation device |
| 03/16/1976 | US3944814 Light detecting apparatus of improved resolution |
| 03/16/1976 | US3944167 Radiation detection apparatus |
| 03/09/1976 | US3943514 Dual base line interferometer antenna |
| 03/09/1976 | US3943360 Radiant energy pulse detector |
| 03/09/1976 | US3943277 Digital memory area correlation tracker |
| 03/02/1976 | US3942177 Interferometer radar elevation angle measurement apparatus |
| 03/02/1976 | US3941483 Target identification apparatus |
| 02/24/1976 | US3940769 Binaural auditory presentation apparatus |
| 02/17/1976 | US3939477 Quadrupole adcock direction finder and antenna therefor |
| 02/03/1976 | US3936832 System to process antenna beams to obtain the angular location of target with high resolution and accuracy |
| 02/03/1976 | US3936831 Single pulse TOA measurement system |
| 02/03/1976 | US3936632 Position determining system |
| 02/03/1976 | US3936629 Horizon sensor for a satellite in geostationary orbit |
| 01/27/1976 | US3935575 Circuitry for determining direction of impingement of a received signal |
| 01/27/1976 | US3935574 Signal source position-determining process |