| 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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| 05/07/1991 | US5014053 Method and apparatus for determining actual lateral deviation from runway centerline |
| 05/02/1991 | EP0425355A1 Position finding system for a moving object |
| 04/24/1991 | EP0423512A2 Phase controlled antenna array for a microwave landing system (MLS) |
| 04/24/1991 | EP0423254A1 Emergency rescue system |
| 04/17/1991 | EP0423026A1 Method for the simultaneous evaluation of the relative positions of a plurality of beacons |
| 04/11/1991 | DE3932548A1 Torpedo targetting system using GPS - has antenna towed on water surface by line from torpedo |
| 04/10/1991 | EP0421647A2 Transmitters and transmitter circuits |
| 04/10/1991 | EP0421646A2 Transmitters and receivers with antennas |
| 04/10/1991 | EP0420890A1 Road vehicle locating system |
| 04/03/1991 | EP0420329A2 P-code-aided global positioning system receiver |
| 03/31/1991 | CA2026368A1 Transmitters and receivers with antennas |
| 03/31/1991 | CA2026341A1 Transmitters and transmitter circuits |
| 03/26/1991 | US5003553 Spread spectrum phase locked loop with phase correction |
| 03/26/1991 | US5003514 Deep ocean recoverable acoustic sensor vehicle |
| 03/26/1991 | CA2026025A1 System for identifying selected locations |
| 03/20/1991 | EP0418034A2 Improved thermal beacon assembly |
| 03/20/1991 | EP0417959A2 An assembly for locating the position of an object |
| 03/20/1991 | EP0417689A2 Phased array antenna with temperature compensating capability |
| 03/13/1991 | CA2025088A1 Device for locating a boring machine |
| 03/12/1991 | US4999638 Apparatus and method for synchronizing the signal averaging clock of a Loran C. receiver to the clock of a Loran C. transmitter |
| 03/12/1991 | CA1281379C2 Emergency locating transmitter and receiver system |
| 03/07/1991 | WO1991002942A1 Portable localizer siting system |
| 03/05/1991 | US4998111 CPS transform correlation receiver and method |
| 02/27/1991 | EP0414488A2 Spread spectrum phase locked loop with phase correction |
| 02/22/1991 | CA2023731A1 Portable localizer siting system |
| 02/07/1991 | WO1991001546A1 Error correction method and apparatus for pulse amplitude comparison systems |
| 02/07/1991 | WO1991001504A1 Method and apparatus for detecting receiver compression in multiple lobe guidance systems |
| 02/05/1991 | US4990921 Aircraft |
| 01/30/1991 | EP0410533A1 Method for receiving MLS-impulses and device for carrying out this method |
| 01/17/1991 | CA2017826A1 Error correction method and apparatus for pulse amplitude comparison systems |
| 01/17/1991 | CA2017825A1 Method and apparatus for detecting receiver compression in multiple lobe guidance system |
| 01/16/1991 | EP0408193A1 Aircraft landing system having simplified out-of-coverage indication (OCI) |
| 01/10/1991 | CA2019677A1 Aircraft landing system having simplified out-of coverage indication (oci) |
| 01/08/1991 | US4983984 Roadside beacon system with polarized beams |
| 01/08/1991 | US4983980 Satellite radio signal tracking method for GPS receivers |
| 01/08/1991 | CA1278847C Reducing cycle slippage errors in loran-c for vehicles undergoing acceleration |
| 01/08/1991 | CA1278845C Roadside beacon system |
| 12/27/1990 | EP0404280A1 System and method for determining the position of a person or other body |
| 12/13/1990 | WO1990015342A1 Power efficient feed network for tacan antenna arrays |
| 12/06/1990 | DE4009325A1 Generating TACAN antenna radiation diagram - by choice of sidebands fed to antenna elements arranged on circle |
| 12/04/1990 | USRE33470 System for recovering a hunting arrow |
| 11/27/1990 | CA1277015C Directional antennas for a roadside beacon system |
| 11/27/1990 | CA1277014C Roadside beacon system |
| 11/20/1990 | US4972431 P-code-aided global positioning system receiver |
| 11/14/1990 | EP0396609A1 Direction sensitive energy detecting apparatus |
| 11/07/1990 | EP0395760A1 System of independent radio beacons for elevation guidance |
| 11/06/1990 | US4968982 Aircraft landing system having simplified out-of-coverage indication (OCI) |
| 11/06/1990 | US4968981 GPS receiver apparatus |
| 10/30/1990 | US4966456 Spectral analyzer and direction indicator and aircraft landing system application |
| 10/23/1990 | USRE33401 Microwave landing system |
| 10/23/1990 | US4965808 Code tracking apparatus with improved resolution for spread spectrum receiver |
| 10/10/1990 | CN1009964B 先进的仪表着陆系统 Advanced Instrument Landing System |
| 10/09/1990 | US4961575 Hide and seek game |
| 10/04/1990 | DE3909758A1 Method for self-location of moving objects on the basis of long-wave, mutually phase-locked signals |
| 09/25/1990 | US4959655 Method for the radiolocation of a vehicle carrying a receiving device, by measuring the differences between the times for receiving radio-frequency signals, and receiving device for carrying out this method |
| 09/11/1990 | US4956550 Sub-sea fiber optic cable location apparatus with a plurality of transponder means |
| 09/05/1990 | EP0385636A2 Code tracking apparatus with improved resolution for spread spectrum receiver |
| 09/04/1990 | US4954836 Follow-up system for moving bodies |
| 08/29/1990 | EP0383761A1 Method and apparatus for processing synthetic aperture aerial signals |
| 08/21/1990 | US4951263 Spread spectrum underwater location beacon system |
| 08/14/1990 | US4949268 Land vehicle navigation system |
| 08/02/1990 | DE4002176A1 GPS navigation arrangement for vehicle |
| 07/22/1990 | WO1990008060A1 Emergency rescue system |
| 07/22/1990 | CA2025892A1 Emergency rescue system |
| 07/19/1990 | DE3900823A1 Car-radio 100% theft safe system |
| 07/11/1990 | EP0222885B1 Spectral analyzer and direction indicator and aircraft landing system application |
| 07/10/1990 | US4940986 Millimeter wave locating |
| 07/10/1990 | US4940984 Transmitting station for a navigation system comprising a main transmitter and a stand-by transmitter, particularly transmitting station for the MLS microwave landing system |
| 07/10/1990 | US4940245 Arrow/wounded animal tracking device |
| 07/03/1990 | US4939751 Phase signal filtering apparatus utilizing estimated phase signal |
| 07/03/1990 | US4939522 Method and system for monitoring vehicle location |
| 06/26/1990 | US4936678 Position detection system for use with agricultural and construction equipment |
| 06/26/1990 | CA1270920A1 System for determining the angular spin position of an object spinning about an axis |
| 06/20/1990 | CN1008499B Method of and apparatus for reducing cycle slippage errors in radio-frequency signal reception |
| 06/19/1990 | CA1270551A1 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 |
| 06/05/1990 | US4932006 Process for signal transmission without electric connection through a conducting wall, the hull of a ship for example, and a device for implementing same |
| 05/29/1990 | US4929957 Method and apparatus for detecting receiver compression in multiple lobe guidance systems |
| 05/23/1990 | EP0369694A2 Laser control of excavating machine digging depth |
| 05/22/1990 | US4928107 Signal receiving method for a user's device in a global positioning system |
| 05/09/1990 | EP0366772A1 Receiver for rotating lasers used in the guiding of vehicles, particularly for public works. |
| 05/09/1990 | CN1007934B Method 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 |
| 05/03/1990 | DE3927851A1 Moving object spatial position detector and guide - has electro=optical system detecting lights on aircraft steering, guidance computer and radio link for automatic landing |
| 04/25/1990 | EP0365389A1 Method of automatically analysing and identifying periodic signals, and apparatus for carrying out this method |
| 04/24/1990 | US4920348 Method and apparatus for signal modulation and detection |
| 04/17/1990 | US4918706 Spread spectrum long loop receiver |
| 04/10/1990 | US4916451 Microwave landing system |
| 04/03/1990 | US4914735 Propagation time detecting system with use of detected phase difference of transmitted and received subcarrier |
| 03/27/1990 | US4912480 Offset phase-center antenna for aircraft landing system |
| 03/27/1990 | US4912479 Microwave landing system |
| 03/27/1990 | US4912475 Techniques for determining orbital data |
| 03/27/1990 | US4911548 Determination of one or more spatial parameters of an object |
| 03/27/1990 | CA1267206A1 Instrument landing system |
| 03/20/1990 | US4910525 Audio verification system and technique for GPS receivers |
| 03/08/1990 | DE3830301A1 Arrangement for identifying a road traffic accident which occurs in a predetermined area |
| 03/06/1990 | US4907005 Radiofrequency power distributor for instrument landing system localizer antenna arrays |
| 02/27/1990 | US4905012 Power efficient feed network for TACAN antenna arrays |
| 02/27/1990 | CA1266316A1 Digital circuit for correcting phase shift of digital signal |
| 02/07/1990 | EP0353849A1 A signal receiving method for a user's device in a global positioning system |
| 02/06/1990 | US4899160 Guidance equipment for microwave landing system |
| 01/23/1990 | US4896161 Roadside beacon system |