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| Number | Title | Issue Date |
| 8179318 | Precise position determination using VHF omni-directional radio range signals Apparatus having corresponding methods and computer programs comprise a wireless receiver to receive a Very High Frequency (VHF) Omni-directional Radio Range (VOR) signal comprising a frequency-modulated (FM) component; an analog-to-digital converter to generate a d... | 05/15/2012 |
| 8059030 | Method and system for using a database and GPS position data to generate bearing data A method and system for providing a bearing from a vehicle to a transmitting station are described. The method includes accessing a database to obtain transmitter position information for the transmitter, obtaining vehicle position information based on a GPS signal,... | 11/15/2011 |
| 7489274 | System and method for generating a very high frequency omnidirectional range signal A system and method for generating signals for testing a Very High Frequency Omnidirectional Range (VOR) receiver is described. The system includes a waveform generator and a signal generator. The waveform generator generates a waveform representing a waveform gener... | 02/10/2009 |
| 7428450 | Method and system for using a database and GPS position data to generate bearing data A method and system for providing a bearing from a vehicle to a transmitting station are described. The method includes accessing a database to obtain transmitter position information for the transmitter, obtaining vehicle position information based on a GPS signal,... | 09/23/2008 |
| 7280072 | System for the relative navigation of aircraft and spacecraft using a phased array antenna A system for the relative navigation of aircraft and spacecraft is disclosed which uses a series of short duration, unmodulated radio pulses transmitted from a phased array antenna. The aircraft or spacecraft whose position is to be determined from another is called... | 10/09/2007 |
| 6111543 | Method and device for analysing radio navigation signals A beacon transmission signal comprises at least one carrier (C+SB) including sidebands (SB) and one sideband only signal (SBO), said carrier and said signal being in any mutual phase relationship. The method of the invention includes the steps of demodula... | 08/29/2000 |
| 5305010 | Crystal oscillator synchronized digital very high frequency omni-range (VOR) instrumentation unit A very high frequency omni-range (VOR) receiver for use in aircraft radio-navigation, which provides an indication of course deviation that is substantially immune to effects such as reflections in transmitted VOR signals, transients occurring in an aircr... | 04/19/1994 |
| 4843399 | Portable navigational communications transceiver A hand held navigational-communications transceiver is compressed into a case having a volume of about 37 cubic inches by defining functional implementation for VOR (VHF omni-directional range) navigation. The transceiver can be selectively switched to pr... | 06/27/1989 |
| 4674051 | Navigation point locating system A system for determining the closest navigation point to an aircraft utilizes a sphere of influence principle wherein the earth is subdivided into a plurality of geographic areas, for example, one quarter degree squares of latitude and longitude. An ident... | 06/16/1987 |
| 4591861 | Doppler VOR In a doppler VOR, a plurality of antennas (1) are arranged equidistantly on a circle (20). Two opposite antenna pairs on the circle are simultaneously activated by a commutator (13) in a manner to simulate as uniform a rotation of two opposite antennas as... | 05/27/1986 |
| 4567486 | Phase difference measurement technique for VOR A system and technique is disclosed which enables the derivation of phase difference measurements in a VOR system. In the phase difference measurement system, a reference VOR signal and a variable VOR signal are received and multiplied by locally generate... | 01/28/1986 |
| 4484196 | Antenna drive arrangement for very high frequency omidirectional range navigation system An antenna drive arrangement for a very high frequency omnidirectional range (VOR) navigation system for aircraft. The antenna has two vertically arrayed antenna elements located above a ground plane, and reference and variable phase signals are distribut... | 11/20/1984 |
| 4220994 | General purpose navigation aid device A device for assisting a pilot in the navigation of a small aircraft which comprises a micro processor with a keyboard input device, a cathode ray tube as output and a mini-disc memory. The device is housed in a portable package which can be installed in ... | 09/02/1980 |
| 4215346 | Navigation unit having time shared operation A navigational unit having a time-shared mode of operation for handling a plurality of different navigational signals is provided wherein IF components within the unit may have a dual dedication, i.e., used in common for handling all signals while normall... | 07/29/1980 |
| 4197542 | Radio navigation system An electronic navigation system ground station, which may be either an omni-range beacon (such as VOR) or a passive direction finder. A circular array of antenna elements has a feed arrangement which includes switched programming of at least one discrete ... | 04/08/1980 |
| 4186399 | Goniometer circuit for VOR system The present invention relates to an improved goniometer circuit having extremely low modulation harmonic distortion characteristics, which is particularly suitable for use in a VOR navigation system. In the disclosed circuit, modulation harmonic distortio... | 01/29/1980 |
| 4069412 | Area navigation system There is disclosed an area navigation system including signal averaging and lag compensation circuits to overcome VOR signal propagation instabilities and a meter sensitivity control circuit which decreases the sensitivity of a track angle deviation left-... | 01/17/1978 |
| 4017861 | Ground station for a VOR navigation system with means for identifying spurious responses at a remote VOR receiver A ground station for VOR navigation systems with at least one transmitter and several radiators, which ground station radiates azimuth-dependent and azimuth-independent information. The azimuth-dependent information consists of the wave amplitude-modulate... | 04/12/1977 |
| 3995236 | Double sideband modulator A modulator employs a pair of variable RF attenuators to produce a double sideband, suppressed carrier output. The attenuator devices are PIN diodes which are rendered alternately conductive in synchronism with the recurring half cycles of the audio frequ... | 11/30/1976 |
| 3979751 | Transmission device of a radiographic navigation system A transmission device of a radiographic navigation system for azimuth determination, in which an electronic rotating directional beam pattern and a static omnidirectional phase reference beam pattern are generated. For obtaining exact phase relationships ... | 09/07/1976 |
| 3953855 | Navigational guidance method for a plurality of vessels In order to guide a plurality of landing craft between, for example, a water-borne location and a shoreline, a first VOR-type transmitter is provided at the water-borne location, and a second VOR transmitter is located on shore. In a debarking operation, ... | 04/27/1976 |
