| 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) |
|---|
| 07/26/1977 | US4038529 Self learning monitor for vlf wave propagation |
| 07/19/1977 | US4037173 Multiple carrier modulation synthesis |
| 07/19/1977 | US4037086 Vertical navigation guidance system |
| 07/12/1977 | US4035804 Simulated Doppler navigational system with second order diversity |
| 07/12/1977 | US4035803 Circuit arrangement for determining the distance to a VOR transmitter station |
| 06/28/1977 | US4032920 Two-frequency instrument landing system with integral monitor |
| 06/28/1977 | US4032756 Tacan-dme identity detector |
| 06/21/1977 | US4030686 Position determining systems |
| 06/07/1977 | US4028703 Apparatus for radio position-fixing of the hyperbolic phase-measurement type |
| 05/31/1977 | US4027289 Operating condition data system |
| 05/31/1977 | US4027105 Control system to re-establish the orthogonality of two cross-coupled orthogonally polarized transmitted signals |
| 05/24/1977 | US4025923 Synchronous filter for VOR systems |
| 05/24/1977 | US4025921 Technique for obtaining wide bandwidth with optically fed array |
| 05/17/1977 | US4024491 Wireless marine navigational aid system |
| 05/03/1977 | US4021808 Real time threshold |
| 04/26/1977 | US4020450 Towed hydrophone preamplifier and receiver |
| 04/19/1977 | US4019184 Direction-finding method and system |
| 04/19/1977 | US4019183 Apparatus for Loran simulation |
| 04/12/1977 | US4017862 Aircraft guidance system |
| 04/12/1977 | US4017861 Ground station for a VOR navigation system with means for identifying spurious responses at a remote VOR receiver |
| 04/12/1977 | US4017860 Radio navigation beacon |
| 04/12/1977 | US4017858 Apparatus for generating a nutating electromagnetic field |
| 03/29/1977 | US4015262 Digital filters for obtaining quadrature components of a periodic signal |
| 03/22/1977 | US4014025 Scalloping suppression system and method |
| 03/22/1977 | US4014024 Non-rotating antenna |
| 03/15/1977 | US4012739 Instrument landing system (ILS) with simplified transmitter |
| 02/15/1977 | US4008470 Passive ranging system |
| 02/08/1977 | US4007437 Acoustic foghorn for directional signaling |
| 02/08/1977 | US4007422 Method and apparatus for calling a ground station by an aircraft |
| 02/08/1977 | US4006871 Automatic pitch axis control system for aircraft |
| 02/01/1977 | US4006461 System for transmitting operating condition data from a passive station to a central station |
| 01/25/1977 | US4005427 Facility for monitoring the carrier-frequency and sideband signals radiated by a DVOR ground station |
| 01/04/1977 | US4001765 Pressure compensating sound transducer apparatus |
| 01/04/1977 | US4001598 Sequential power supply and method for rf pulse generation |
| 12/28/1976 | US3999859 Device for checking radio aerial navigational aids |
| 12/21/1976 | US3999187 Doppler VOR beacons |
| 12/21/1976 | US3999182 Phased array antenna with coarse/fine electronic scanning for ultra-low beam granularity |
| 12/21/1976 | US3999007 Landing reproducer device and system |
| 12/21/1976 | US3998412 Helical vertical path control apparatus for aircraft area navigation system |
| 12/14/1976 | US3997902 Transmission of radio navigation phase corrections |
| 12/14/1976 | US3997901 Method of directing an aerial to a receiver according to a main direction |
| 12/14/1976 | US3997390 Twin-wire paper machine and method for operating the same |
| 12/07/1976 | US3996590 Method and apparatus for automatically detecting and tracking moving objects and similar applications |
| 12/07/1976 | US3996515 Method for frequency cross-coupling of channels in an Omega Navigation receiver system |
| 12/07/1976 | US3996098 Twin-wire paper machine with common wire path controls |
| 11/30/1976 | US3995272 Signal conditioning circuit |
| 11/30/1976 | US3995236 Double sideband modulator |
| 11/30/1976 | US3994456 Steered lateral course transition control apparatus for aircraft area navigation systems |
| 11/30/1976 | US3994455 Automatic approach pitch axis control system for aircraft |
| 11/23/1976 | US3993973 Underwater transient sound generator having pressure compensating fillet |
| 11/16/1976 | US3992692 Programmable underwater acoustic beacon |
| 11/09/1976 | US3991378 Electronic phaselock circuitry |
| 11/02/1976 | US3990034 Towable VLF sonar projector |
| 11/02/1976 | US3989209 Apparatus for guiding an aircraft along a multi-segment path when landing the craft |
| 10/26/1976 | US3988733 VOR receiver with improved performance in a Doppler navigation system |
| 09/28/1976 | US3983561 High frequency wave radiation system producing a rotating beam defining a predetermined geometrical pattern |
| 09/28/1976 | US3983559 Novel structure for radio position fixing using hyperbolic phase measurement |
| 09/28/1976 | US3983474 Tracking and determining orientation of object using coordinate transformation means, system and process |
| 09/21/1976 | US3982249 Microwave radiation method and apparatus with a combined diffraction edge and radiation screen |
| 09/21/1976 | US3981440 Digital signal detector |
| 09/14/1976 | US3981015 Phase locking of time-sequential transmission from spaced transmitters in a phase comparison naviagation system |
| 09/07/1976 | US3979751 Transmission device of a radiographic navigation system |
| 08/31/1976 | US3978342 Dual mode radiation transmitting apparatus |
| 08/24/1976 | US3977002 Tracking filter for frequency measurement in a Doppler type navigation guidance system or the like |
| 08/17/1976 | US3975736 Radio theodolite angle measuring apparatus |
| 08/17/1976 | US3975731 Airborne positioning system |
| 08/10/1976 | US3974503 Phase comparison radio navigation system with time-sequenced transmissions from spaced stations using selectable phase memory oscillators in a receiver |
| 08/10/1976 | US3974502 Phase comparison radio navigation system receiver having phase memory oscillators for phase locking to time-sequentially received transmissions |
| 08/10/1976 | US3974211 Method of manufacturing methallyl sulfonate |
| 08/03/1976 | US3973262 Radio direction finder with means for reducing sensitivity to multipath propogation errors |
| 08/03/1976 | US3973261 Synchron timing of signals in spaced transmitters and in a receiver for a phase comparison navigation system using time sequential transmissions |
| 07/27/1976 | US3972044 Antenna system for Doppler VOR ground stations |
| 07/20/1976 | US3971026 Multiple beam glide slope radio navigation method with two classes of beams |
| 07/20/1976 | US3971025 Airport ground surveiliance system with aircraft taxi control feature |
| 07/20/1976 | US3971019 Receiver apparatus |
| 07/13/1976 | US3969616 Digital range computer systems for air navigation systems such as tacan |
| 07/06/1976 | US3968495 Instrument landing system |
| 07/06/1976 | US3968494 Analyzer device for a VOR navigational receiver |
| 07/06/1976 | US3968493 Digital phase comparators |
| 06/29/1976 | US3967278 Low cost microwave receiver for ILS |
| 06/29/1976 | US3967277 Radio navigation system |
| 06/22/1976 | US3965443 Electronic modulator for guidance systems |
| 06/15/1976 | US3964067 Glide path signal transmission system |
| 06/15/1976 | US3964053 Aircraft guiding system |
| 06/08/1976 | US3962703 Airborne telemetering radar having variable width range gates |
| 05/18/1976 | US3958244 Transmitter output monitor |
| 05/18/1976 | US3958183 Frequency selective signal presence detector |
| 05/18/1976 | US3957377 Method of and apparatus for sensing the position of a body |
| 05/04/1976 | US3955198 Radar RF generator including a stable local oscillator and an exciter circuit |
| 04/27/1976 | US3953856 Method and apparatus for mapping and similar applications |
| 04/27/1976 | US3953854 Doppler radio navigation beacon system with means for reducing multipath signal effects |
| 04/27/1976 | US3953802 Adjacent channel rejector |
| 04/20/1976 | US3952309 Doppler perspective navigation system employing the comparisons with a reference source of signal phases received on an aircraft by a plurality of sensors |
| 04/20/1976 | US3952308 Perspective navigation system employing the inner comparisons of signal phases received on an aircraft by a plurality of sensors |
| 04/13/1976 | US3950754 Method of transmitting glide slope navigation signals for aircraft |
| 04/13/1976 | US3950753 Stepped cardioid bearing system |
| 04/13/1976 | US3950752 Navigation receiver system for synchronizing to noisy, asymmetrical signals |
| 04/06/1976 | USRE28762 Radio navigational aid with separate standard frequency signal |
| 03/30/1976 | US3947849 Loran receiver-navigator |
| 03/30/1976 | US3947809 Below glide slope advisory warning system for aircraft |