Patents
Sitemap › G01 - Measuring; Testing › G01S - Radio direction-finding; Radio navigation; Determining distance or velocity by use of radio waves; Locating or presence-detecting by use of the reflection or reradiation of radio waves; Analogous arrangements using other waves › 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
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)
12/1988
12/13/1988CA1246723A1 Method and apparatus for monitoring ice masses
12/13/1988CA1246722A1 Digital phase rotation of signals
12/06/1988US4789864 Low elevation guidance system
12/01/1988DE3816462A1 Method for transmitting signals via a narrowband channel
12/01/1988DE3716329A1 Method for the acquisition of signals
11/1988
11/30/1988EP0293099A1 Microwave landing system with fail-soft switching of dual transmitters, beam steering and sector antennas
11/29/1988CA1245753A1 Method and device for monitoring a mls station
11/15/1988US4785463 Digital global positioning system receiver
11/15/1988CA1244887A1 Receiver for bandspread signals
11/09/1988EP0289657A2 Roadside beacon system with polarized beams
11/09/1988EP0289558A1 Microwave landing system for use on a back course approach
11/03/1988WO1988008544A1 Multi-mode microwave landing system
11/02/1988EP0138907B1 Waveguide antenna
10/1988
10/26/1988EP0288170A2 Low elevation guidance system
10/19/1988EP0287443A1 Method for the compensation of a charge amplifier circuit, in particular for a piezoelectric hydrophone
10/11/1988US4777658 Emergency locating transmitter and receiver system
10/11/1988US4777656 Legislated emergency locating transmitters and emergency position indicating radio beacons
09/1988
09/28/1988EP0220303A4 Microwave landing system.
09/27/1988US4774518 Loran-C signal phase tracking apparatus
09/21/1988EP0283353A1 Landing aid system using navigation satellites
09/21/1988EP0283302A2 Techniques for determining orbital data
09/06/1988US4768736 Information transmission system
08/1988
08/16/1988US4764772 Scanning-beam microwave landing system
08/16/1988US4763861 Microwave rendezvous system for aerial refueling
08/16/1988CA1240774A1 Warning system for microwave landing system airborne receiver
08/10/1988EP0277231A1 Distributed kalman filter
08/09/1988US4763307 Wide-range audio frequency underwater transducer
08/09/1988CA1240385A1 Fast sweep reinforced preamble decoding circuit for a mls airborne receiver
07/1988
07/26/1988US4759735 Solar cell powered beacon
07/26/1988CA1239685A1 Microwave detection system
07/20/1988EP0274958A1 Device for compensating the Doppler effect produced by the relative motion between receiver and transmitter, tuned at the same frequency, in a radioreceiver
07/12/1988US4757320 Method and device for the radioelectric synchronization of slave stations by a master station, especially for a microwave landing control system
07/12/1988US4757316 Method and device for monitoring a station of a landing aid system of the MLS type
06/1988
06/22/1988EP0271842A2 Roadside beacon system
06/14/1988US4751511 For detecting a projectile using a radar system
06/14/1988US4750689 System for determining the angular spin position of an object spinning about an axis
05/1988
05/17/1988US4745586 Electromagnetic transducers for underwater low-frequency high-power use
05/10/1988US4743912 Method of and apparatus for reducing cycle slippage errors in Loran-C and similar radio-frequency signal reception, particularly in vehicles undergoing acceleration
05/10/1988US4743863 Device to increase the dynamic ratio of an amplifier circuit, especially that of an on-board MLS receiver
05/05/1988WO1988003274A1 Scanning antenna having phase center diversity
05/04/1988EP0265542A1 Optical navigation system
04/1988
04/21/1988WO1988002868A1 Microwave landing system for use on a back course approach
04/20/1988EP0264056A2 Vehicle antenna with shiftable gain patterns
04/19/1988US4739351 Verification of on-line fault monitor performance
04/19/1988US4739333 Single channel distance measuring receiver system and method
04/12/1988CA1235217A1 Microwave landing system with 90 degree azimuth clearance guidance and 360 degree data coverage
03/1988
03/31/1988DE3633475A1 Device for locating an object to be recovered from water
03/24/1988DE3631361A1 Method and device for position measurement using light
03/22/1988US4733081 Method and apparatus for sensing a human body
03/17/1988DE3631321A1 Device having at least one laser for guiding aircraft, especially during landing at airports
03/15/1988US4731869 Target tracking transmitter having two levels of power operation
03/08/1988US4730192 Monitor for an electronic TACAN beacon
03/02/1988CN87104303A 先进的仪表着陆系统 Advanced Instrument Landing System
03/01/1988US4728957 Digital frequency discriminator, for extracting a sinusoidal signal
03/01/1988US4728926 Apparatus enabling the identification of a periodic composite signal made up of a train of elementary signals
02/1988
02/25/1988WO1988001409A1 Distributed kalman filter
02/16/1988US4725146 Method and apparatus for sensing position
02/02/1988US4723126 Microwave landing system for use on a back course approach
01/1988
01/28/1988WO1988000777A1 Radio beacon device
01/27/1988EP0254262A2 Roadside beacon system
01/27/1988CN87104969A 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
01/20/1988EP0253470A2 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
01/12/1988US4719469 Direction-determining system
12/1987
12/29/1987US4716574 Wirelessly functioning signal transmission system
12/23/1987EP0249951A1 Roadside beacon system
12/23/1987EP0249753A1 Scanning-beam microwave landing system
12/22/1987US4714929 Digital averaging filter particularly suited for use with air navigation receivers
12/16/1987EP0249487A2 Apparatus and method for locating a vehicle in a working area and for the on-board measuring of parameters indicative of vehicle performance
12/09/1987EP0248407A2 Airplane sensing apparatus
11/1987
11/19/1987WO1987007030A1 Advanced instrument landing system
11/19/1987WO1987007009A1 Position locating system for a vehicle
11/17/1987CA1229398A1 Process for increasing the range and the protection against jamming of a mls landing system and means for performing this process
11/10/1987US4706286 Method and circuit for extraction of Doppler information from a pseudo-noise modulated carrier
11/04/1987EP0243635A2 Roadside beacon system
11/03/1987US4704612 System for recovering a hunting arrow
10/1987
10/21/1987EP0242115A2 Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites
10/21/1987EP0241565A1 Method for determining the sojourn cell of a mobile station in a mobile radio network
10/20/1987US4701934 Method of doppler searching in a digital GPS receiver
10/20/1987US4701760 Method for positioning moving vehicles and exchanging communications between the vehicles and a central station
10/06/1987CA1227876A1 Real time controller
09/1987
09/30/1987EP0239156A1 System for determining the angular spin position of an object spinning about an axis
09/22/1987US4695843 Method for processing radio signals for radionavigation and receiver for carrying out the said method
09/16/1987EP0237063A1 Directional antennas for a roadside beacon system
09/15/1987CA1226932A1 Signal transmission, without electrical links, through a conducting wall
09/09/1987EP0235285A1 Apparatus for and method of doppler searching in a digital gps receiver
09/08/1987US4692907 For use in a seismic cable
09/01/1987CA1226355A1 Method and system for determining position using signals from satellites
08/1987
08/25/1987US4689626 Digital circuit for correcting phase shift of digital signal
08/24/1987EP0172833A4 Time and accounting system.
08/19/1987EP0232951A1 Information transmission system
08/11/1987US4685800 Alignment system
07/1987
07/14/1987US4680587 Instrument landing system
07/14/1987CA1224261A1 Microwave landing system with protection against jamming
06/1987
06/30/1987US4677442 Microwave landing system with ±90 degree azimuth clearance guidance and 360 degree data coverage
06/23/1987US4675684 Distance measuring receiver system and method
06/23/1987US4675683 Spent hunting arrow locating means
06/23/1987CA1223343A1 Waveguide antenna
06/16/1987US4674051 Navigation point locating system
06/16/1987US4673936 Rescue transmitter apparatus
06/09/1987US4672629 Receiver for bandspread signals
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