| Patents for G01S 1 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith (15,825) |
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| 01/16/1990 | US4894662 Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites |
| 01/16/1990 | US4894655 Landing assistance system using navigation satellites |
| 01/10/1990 | CN1038702A Spread spectrum aircraft guidance system |
| 12/28/1989 | WO1989012835A1 Road vehicle locating system |
| 12/26/1989 | US4890110 Microwave landing system |
| 12/26/1989 | US4888890 Laser control of excavating machine digging depth |
| 12/20/1989 | CN2049778U Infrared receiver-transmitter |
| 12/19/1989 | US4888595 Acquisition signal transmitter |
| 12/19/1989 | US4888594 Loran-C receiver module |
| 12/19/1989 | US4887781 Transmitters |
| 12/12/1989 | US4887090 Vehicle antenna with shiftable gain patterns |
| 12/12/1989 | CA1263885A1 Emergency locating receiver system |
| 12/05/1989 | US4885591 Method and apparatus for monitoring ice masses |
| 11/30/1989 | WO1989011661A1 System of independent radio beacons for elevation guidance |
| 11/29/1989 | EP0343295A1 Automatic, real-time fault monitor verifying network in a microwave landing system |
| 11/29/1989 | EP0187842B1 Loran c cycle slip reduction technique |
| 11/21/1989 | CA1263143A1 Verification of on-line fault monitor performance |
| 11/16/1989 | WO1989011107A1 Receiver for rotating lasers used in the guiding of vehicles, particularly for public works |
| 11/16/1989 | DE3838784C1 Navigation system |
| 10/26/1989 | DE3833636C1 Missile having a pyrotechnic tracer charge |
| 10/24/1989 | US4876659 Pseudo-Random code generator for use with a global positioning system |
| 10/24/1989 | US4875646 Aircraft navigation systems |
| 10/17/1989 | US4874238 Method and device for measurement with laser beam |
| 10/10/1989 | US4873531 Identification transponder for use when a vehicle passes a given point |
| 10/04/1989 | EP0335303A2 Transmitting station for a navigation system comprising a principal and a standby transmitter, especially a transmitting station for the micro wave landing system MLS |
| 09/27/1989 | EP0334108A2 Receiver for spread-spectrum signals, especially a GPS-type receiver |
| 09/27/1989 | EP0333846A1 Apparatus and method for receiving and processing loran signals |
| 09/26/1989 | US4870422 Method and system for determining position from signals from satellites |
| 09/26/1989 | CA1261949A1 Phase rotation of signals |
| 09/26/1989 | CA1261439A1 Microwave landing system |
| 09/26/1989 | CA1260120A1 Apparatus for and method of doppler searching in a digital gps receiver |
| 09/19/1989 | US4868799 Means for equalizing the internal pressure in an underwater transducer employing a vibratile piston to permit operation of the transducer at water depths in excess of a few hundred feet |
| 09/13/1989 | CN1035562A Geodetic ground telemetering draughting instrument |
| 09/07/1989 | DE3806224A1 Device for tracking the movement of a moving object, especially of a getter machine in mining |
| 09/05/1989 | CA1259111A1 Digital frequency discriminator, and use of discriminator to a composite vor signal |
| 08/30/1989 | EP0330541A1 Method and apparatus for radio position fixing and their use in radio communication systems |
| 08/30/1989 | CN1035181A Method of and apparatus for reducing of loran-c navigational errors |
| 08/23/1989 | EP0328617A1 Phase demodulator and its application to an mls-type landing system |
| 08/22/1989 | US4860018 Continuous wave interference rejection for reconstructed carrier receivers |
| 08/15/1989 | US4858132 Optical navigation system for an automatic guided vehicle, and method |
| 07/27/1989 | WO1989006806A1 Direction sensitive energy detecting apparatus |
| 07/19/1989 | EP0324628A2 Path guidance indicator apparatus for vehicles or craft |
| 07/18/1989 | US4850031 Avalanche victim locating apparatus |
| 07/11/1989 | US4847481 Arrangement for determining the position of a modulated laser beam in a scattering medium |
| 07/04/1989 | US4845648 Apparatus and method for on-board measuring of the load carried by a truck body |
| 07/04/1989 | CA1256916A1 Beacon activation device |
| 06/29/1989 | DE3742423A1 Underwater navigation device |
| 06/27/1989 | US4843399 Portable navigational communications transceiver |
| 06/20/1989 | US4841449 Direction finder |
| 06/20/1989 | US4840445 System for locating an object in space |
| 06/15/1989 | WO1989005460A1 Buoy and watercraft drift warning system |
| 06/13/1989 | US4839835 Apparatus and method responsive to the on-board measuring of the load carried by a truck body |
| 06/13/1989 | CA1255797A1 Apparatus and method responsive to the on-board measuring of the load carried by a truck body |
| 06/07/1989 | CN1004448B 改进的微波着陆系统 Improved microwave landing system |
| 06/06/1989 | US4837580 Microwave landing system with fail-soft switching of dual transmitters, beam steering and sector antennas |
| 06/06/1989 | CA1255379A1 Device for increasing the dynamic range of an amplification circuit in particular of an airborne mls receiver |
| 05/30/1989 | US4835747 Compensating sensor device for a charge amplifier circuit used in piezoelectric hydrophones |
| 05/30/1989 | CA1254977A1 Navigation point locating method and apparatus |
| 05/24/1989 | EP0316840A1 Identification beacon by the passage of a vehicle in a specified point |
| 05/23/1989 | US4833481 Roadside beacon system |
| 05/23/1989 | US4833477 Emergency vessel location system |
| 05/16/1989 | US4831539 Apparatus and method for locating a vehicle in a working area and for the on-board measuring of parameters indicative of vehicle performance |
| 05/16/1989 | CA1254291A1 Radio-electric synchronisation process of slave stations by means of a master station, especially for mls assist landing system, and apparatus used for the implementation of saidprocess |
| 05/10/1989 | EP0315377A2 A Loran-C navigation system |
| 05/10/1989 | EP0314715A1 Multi-mode microwave landing system |
| 05/02/1989 | US4827265 Cooperative tracking system |
| 04/26/1989 | EP0313019A2 Phase signal filtering apparatus utilizing estimated phase signal |
| 04/18/1989 | US4823138 Roadside beacon system |
| 04/18/1989 | US4823127 Automatic, real-time fault monitor verifying network in a microwave landing system |
| 04/11/1989 | US4821038 Method of and apparatus for Loran-C message communication with reduced skywave navigation location errors and the like |
| 04/11/1989 | US4819860 Wrist-mounted vital functions monitor and emergency locator |
| 04/06/1989 | WO1989003048A1 Apparatus and method for receiving and processing loran signals |
| 04/04/1989 | US4819000 Scanning antenna having amplitude and phase distribution diversity |
| 03/28/1989 | US4815840 Position locating system for a vehicle |
| 03/21/1989 | US4814771 Apparatus and method for receiving and proessing Loran signals |
| 03/21/1989 | CA1251543A1 Radio transmitter |
| 03/15/1989 | EP0307381A2 Optical navigation system for an automatic guided vehicle, and method |
| 03/15/1989 | EP0306942A2 Propagation time detecting system with use of detected phase difference of transmitted and received subcarrier |
| 03/15/1989 | EP0306577A2 System and method for determining the position of a person or other body |
| 03/15/1989 | EP0191079B1 Projection system for a guide beam |
| 03/14/1989 | US4812851 Radio receiver with automatic interference cancellation |
| 03/09/1989 | WO1989002188A1 Phase demodulator and its application to an mls-type landing system |
| 03/07/1989 | US4811022 Scanning antenna having phase center diversity |
| 02/28/1989 | US4809005 Determining ship towed sensor position information |
| 02/21/1989 | US4807171 Digital phase rotation of signals |
| 02/21/1989 | EP0289558A4 Microwave landing system for use on a back course approach. |
| 02/14/1989 | US4804964 Loran-C signal receiving apparatus |
| 02/07/1989 | CA1249872A1 Transmitters |
| 02/01/1989 | EP0301126A1 Microwave rendezvous system for aerial refueling |
| 01/24/1989 | US4800391 Method of and apparatus for message communication on Loran-C navigational signal broadcasts and the like with reduced navigation errors |
| 01/18/1989 | EP0299848A1 Method of radiolocation of a vehicle carrying a receiver, by measuring reception time differences of RF signals and apparatus therefor |
| 01/03/1989 | US4796188 Phase rotation of signals |
| 01/03/1989 | CA1248208A1 Dynamic limiter for mls receiver |
| 01/03/1989 | CA1248207A1 Split gate preprocessor |
| 12/27/1988 | US4794543 Multi level split gate signal processor determining the centroid of a signal |
| 12/21/1988 | EP0296016A1 System for determining the position of an object within a space |
| 12/20/1988 | US4792806 Lightning position and tracking method |
| 12/20/1988 | CA1247217A1 Radio synchronization method using dme stations for the stations of a landing guidance system or the mls type and devices for implementing said method |
| 12/15/1988 | WO1988009938A1 Method and apparatus for processing synthetic aperture aerial signals |
| 12/13/1988 | US4791422 Methods of and apparatus for measuring time of arrival of remote Loran-C and related signals and effective time of transmission of local signals at transmitter sites |