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| Number | Title | Issue Date |
| 5266958 | Direction indicating apparatus and method A GPS receiver (10) with processor (14, 16), memory (18), input (20) and indicator (22), uses conventional code pseudorange and carrier phase to provide a compass function. The receiver antenna (12) is desirably held stationary while the directional vecto... | 11/30/1993 |
| 5202829 | Exploration system and method for high-accuracy and high-confidence level relative position and velocity determinations An embodiment of the present invention is a shipboard GPS positioning system having data links to outlying tailbuoys equipped with respective GPS receivers. On ship, an Intel 386-based microcomputer system collects data from various ship's equipment inclu... | 04/13/1993 |
| 5194871 | System for simultaneously deriving position information from a plurality of satellite transmissions A method and a system are disclosed for measuring the baseline vector b between a pair of survey marks on the ground by radio interferometry using radio signals broadcast from the earth orbiting satellites of the NAVSTAR Global Positioning System (GPS), t... | 03/16/1993 |
| 5187485 | Passive ranging through global positioning system To passively measure the range to a target, GPS signals which are scattered by the target are used to determine the distance from the target to an observation station whose position Po is determined by a GPS technique. If the delay time from th... | 02/16/1993 |
| 5146231 | Electronic direction finder An electronic direction finder (10), having a housing (11) with a major axis (18), has a GPS receiver (28) and directional (31) and omnidirectional (30) antennas and provides an electrical signal (angle A) indicative of the direction of the housing axis (... | 09/08/1992 |
| 4963889 | Method and apparatus for precision attitude determination and kinematic positioning A technique for resolving whole-cycle ambiguity that is inherent in phase-angle measurements of signals received from multiple satellite-based transmitters in a global positioning system. The relative position of a secondary receiving antenna with respect... | 10/16/1990 |
| 4954833 | Method for determining astronomic azimuth An improved method for fixing position of a land-based target site with respect to a reference site in the natural coordinate frame comprising the steps of determining geodetic azimuth between the target site and the reference target using Global Position... | 09/04/1990 |
| 4949089 | Portable target locator system A portable target locator system capable of being transported and utilized by an individual combatant is disclosed. The portable target locator system comprises a rifle-like target locator and a transmitter/modem capable of transmitting target location co... | 08/14/1990 |
| 4881080 | Apparatus for and a method of determining compass headings A compass system and method incorporating a global positioning system (GP such as the NAVSTAR/GPS multi-satellite system, is configured to acquire accurate compass heading information without being affected by magnetic anomalies and without being depende... | 11/14/1989 |
| 4870422 | Method and system for determining position from signals from satellites A method and a system are disclosed for measuring the baseline vector b between a pair of survey marks on the ground by radio interferometry using radio signals broadcast from the earth orbiting satellites of the NAVSTAR Global Positioning System (GPS), t... | 09/26/1989 |
| 4812991 | Method for precision dynamic differential positioning A method and apparatus for rapidly and accurately determining the position coordinates of a remote, movable receiver relative to a fixed reference receiver. The technique utilizes successive code measurements and carrier phase measurements of both the L | 03/14/1989 |
| 4741245 | Method and apparatus for aiming artillery with GPS NAVSTAR A method and apparatus for aiming artillery by incorporating the GPS NAVSTAR system directly into a mobile artillery unit such as a howitzer. A firts GPS ground station is incorporated into a howitzer. A second GPS ground station is located at a distance ... | 05/03/1988 |
| 4719469 | Direction-determining system A direction determining system having a Global Positioning System (GPS) receiver, a linear antenna array and a fast switching facility, the linear antenna array comprised of at least two antenna elements and the GPS receiver including two Costas Loops. Th... | 01/12/1988 |
| 4667203 | Method and system for determining position using signals from satellites A method and a system are disclosed for measuring the baseline vector b between a pair of survey marks on the ground by radio interferometry using radio signals broadcast from the earth orbiting satellites of the NAVSTAR Global Positioning System (GPS), t... | 05/19/1987 |
| 4644358 | Stem orientation measurement apparatus An apparatus to confirm an orientation of the stem of ship by making use of a satellite included in the Global Positioning System. Radio wave signals from the satellite are received by a directional or omnidirectional antenna and the phase difference betw... | 02/17/1987 |
