| 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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| 04/11/1991 | DE4004196C1 Transponder transferring stored measurement data to interrogator - operates without battery using capacitor charged by rectified HF pulses |
| 04/04/1991 | DE3934999A1 Infrared target-seeking head - comprises lens arrangement coupled with mirror arrangement and detector to achieve high sample rate |
| 04/03/1991 | EP0420792A2 Sonic direction locating system |
| 04/03/1991 | EP0420657A2 Moving object detecting system |
| 04/02/1991 | US5004183 Switched comparator system for obtaining dynamic range |
| 03/30/1991 | CA2026342A1 Sonic direction locating system |
| 03/28/1991 | DE3932659C1 Room e.g. vehicle interior and-or object monitoring method - examining changes in EM field beam from transmitter and activating alarm when amplitude of detected signals exceeds set level |
| 03/27/1991 | EP0419016A1 Forced correlation/mixed mode tracking system |
| 03/26/1991 | US5003514 Deep ocean recoverable acoustic sensor vehicle |
| 03/26/1991 | US5003316 Single null miniature direction finder |
| 03/21/1991 | DE3928973A1 Optical fibre delay line set - has individual delay lines wound in spiral in given plane with spiral lying along common winding axis |
| 03/20/1991 | EP0417225A1 Process and device for reducing the noise emission of submerged submarines. |
| 03/19/1991 | US5001678 System for detecting surrounding environmental conditions using a multiple number of incoming signals |
| 03/19/1991 | US5001650 Method and apparatus for search and tracking |
| 03/19/1991 | US5001348 Method and apparatus for recognizing the start and motion of objects |
| 03/12/1991 | US4999483 Sensor for detecting two dimensional angle of incidence of the sun |
| 03/07/1991 | WO1991002987A1 Ultrasonic tracking system |
| 03/06/1991 | EP0415241A2 Durable infrared target having fast response time |
| 03/05/1991 | CA1281123C Line array transducer assembly |
| 03/01/1991 | CA2020454A1 Durable infrared target having fast response time |
| 02/27/1991 | EP0414203A1 Device for target acquisition and firing or horizontal mines to be launched for defense against tanks |
| 02/26/1991 | US4996533 Single station radar ocean surface current mapper |
| 02/26/1991 | US4996437 Optical clutter scene simulator |
| 02/21/1991 | WO1991001778A1 Process and device for determining the optimal training speed for throwing, shooting or passing in throwing sports or ball games |
| 02/20/1991 | EP0413594A2 Seeker |
| 02/20/1991 | EP0413593A2 Optical system |
| 02/19/1991 | US4994815 Tracking controller for three-axis mount antenna systems |
| 02/19/1991 | US4994812 Antenna system |
| 02/19/1991 | US4994661 Optical two-dimensional servo-loop for laser beam stabilization and/or position encoding |
| 02/19/1991 | CA1280504C Deployable cylindrical sonar |
| 02/19/1991 | CA1280493C Radio direction-finding using time of arrival measurements |
| 02/16/1991 | CA2021227A1 Forced correlation/mixed mode tracking system |
| 02/05/1991 | US4991149 Underwater object detection system |
| 02/05/1991 | US4991147 Half-beam digital target |
| 02/05/1991 | US4990921 Aircraft |
| 01/30/1991 | EP0410844A1 Orientation detector of sources emitting radioactive radiation |
| 01/30/1991 | EP0410591A2 System for deploying horizontal line array |
| 01/29/1991 | US4988193 Method and apparatus for measuring incident light angle relative to level |
| 01/29/1991 | US4988058 Method and apparatus for steering moving objects |
| 01/25/1991 | CA2020202A1 System for deploying horizontal line array |
| 01/24/1991 | DE3923489A1 location imaging and missile guiding device - has receiver with several image sensors, operated in time parallel and liq. crystal allocated to respective sensor |
| 01/24/1991 | DE3923278A1 Signal evaluation or image reproduction - generates sensor or video signal from difference of two frequency bands, or from object colour |
| 01/22/1991 | US4987293 Digital position monitor |
| 01/22/1991 | CA1279391C Passive ranging method and apparatus |
| 01/17/1991 | DE3922153A1 Optical sensor with electro=optical converter and lens - uses low-dispersion property of aspherical lens whose two ellipsoidal faces have major semi-axes orthogonal |
| 01/15/1991 | US4985874 Solid state sequencing switch |
| 01/15/1991 | US4984892 Apparatus for the optical scanning of a spherical or semispherical space |
| 01/10/1991 | DE3920705A1 Digital processor displaying direction data from acoustic receivers - uses arrangement of summing modules to capture and process data for capture and process data for overall summing module |
| 01/09/1991 | EP0406410A1 Scene based nonuniformity compensation of detector sensitivity of an image detector array. |
| 01/08/1991 | US4983983 Semi-automatic direction finding set |
| 01/02/1991 | EP0405678A1 Horizon sensor with improved precision |
| 01/02/1991 | EP0405331A2 Acoustic sensing device with noise cancellation |
| 01/01/1991 | US4982375 Acoustic intensity probe |
| 01/01/1991 | US4982092 360 Degree optical surveillance system |
| 01/01/1991 | US4981354 Optical differential tilt sensor |
| 12/25/1990 | US4980871 Ultrasonic tracking system |
| 12/25/1990 | US4980870 Array compensating beamformer |
| 12/19/1990 | EP0205551B1 Spectral analyzer and direction indicator |
| 12/18/1990 | US4979221 Method and apparatus for sub-pixel centroiding of a photon event |
| 12/18/1990 | US4978963 RF signal direction finding apparatus |
| 12/18/1990 | CA1278076C Method for generating antenna follow-up signals |
| 12/11/1990 | US4977545 Target detector |
| 12/06/1990 | DE3420545A1 Sound source bearing determination appts. - uses passive sonar device with small receiver |
| 12/04/1990 | US4975864 Scene based nonuniformity compensation for starting focal plane arrays |
| 12/04/1990 | US4975710 Methods and apparatus for direction of arrival measurement and radio navigation aids |
| 11/29/1990 | DE3936701A1 Optischer sensor Optical sensor |
| 11/29/1990 | DE3916751A1 Detecting useful signal for directional receiver - comparing digitised signal deviation values with threshold |
| 11/28/1990 | EP0399862A1 Apparatus for missile homing |
| 11/28/1990 | EP0399860A1 Method for determining the movement of a target in underwater acoustic |
| 11/28/1990 | EP0399180A2 Method and apparatus for search and tracking of targets |
| 11/27/1990 | US4974213 Passive active underwater sound detection apparatus |
| 11/27/1990 | US4973156 Linear direction sensor cameras for position measurement |
| 11/27/1990 | US4973013 Seeker |
| 11/15/1990 | WO1990013880A1 Optical warning system |
| 11/15/1990 | DE3915303A1 Two=way optical signal path - includes second station with two I=O windows for optical radiation arranged apart from revolution axis |
| 11/14/1990 | EP0396609A1 Direction sensitive energy detecting apparatus |
| 11/06/1990 | US4969132 Delay quantization technique to reduce steering errors in digital beamformers |
| 11/06/1990 | US4967979 Command guidance technique for line-of-sight missile |
| 10/31/1990 | EP0395614A1 Method and arrangement for determining the direction to a laser beam source |
| 10/31/1990 | EP0395613A1 Laser-warning method and laser warning arrangement |
| 10/31/1990 | DE3913644A1 Verfahren zur achsharmonisierung Method for achsharmonisierung |
| 10/30/1990 | US4967065 Integrated reticle and detector |
| 10/30/1990 | US4966456 Spectral analyzer and direction indicator and aircraft landing system application |
| 10/24/1990 | EP0393741A1 Acoustic detection device |
| 10/23/1990 | US4965776 Planar end-fire array |
| 10/23/1990 | US4965732 Methods and arrangements for signal reception and parameter estimation |
| 10/23/1990 | US4964591 Projectile having nonelectric infrared heat tracking device |
| 10/23/1990 | CA1275480C Position finding and collision avoidance system |
| 10/23/1990 | CA1275479C Collision avoidance system |
| 10/18/1990 | DE3912316A1 Target location system using IC engine exhaust gases - uses sensor for absorption of electromagnetic gradiation |
| 10/18/1990 | DE3910867A1 Visual radio direction finder |
| 10/17/1990 | EP0392306A1 Projectile having nonelectronic infrared heat tracking device |
| 10/16/1990 | US4963890 Antenna tracking system using sequential lobing |
| 10/11/1990 | DE3910906A1 Method for direction forming in the case of a towed acoustic underwater antenna |
| 10/11/1990 | CA2010152A1 Systolic array processing apparatus |
| 10/09/1990 | US4962382 Modified multi-channel Bragg cell using a phased array structure for the improvement of overall efficiency |
| 10/09/1990 | US4962381 Systolic array processing apparatus |
| 10/09/1990 | US4962311 Device for determining the direction of incident laser radiation |
| 09/27/1990 | DE3909874A1 Method for digitising and signal processing of received signals of a phased-array receiving system, and a device for carrying out the method |
| 09/26/1990 | EP0388559A2 Method and apparatus for measuring incident light angle relative to a reference |