Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1998-07-13
1999-08-03
Tarcza, Thomas
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
34235706, 701213, 701215, G01S 502, H04B 7185
Patent
active
059331100
ABSTRACT:
A portable attitude determination apparatus and method are disclosed that can be used with a ship docking system. At least two receivers on a vessel receive Global Positioning System (GPS) satellite data. GPS carrier phase measurements are used to determine attitude (i.e., roll, pitch and yaw angles) of a moving platform. The phase measurements are processed to determine a precise vector from one receiver phase center to the other. The azimuth and elevation of a baseline vector is then computed. Float ambiguities between the two receivers are determined, and are used to provide initial estimates of antenna baseline length and attitude. A search procedure is then employed to find the actual integer ambiguities. Only GPS observables are needed; no other external data input is required.
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English Donald W.
Howell Eugene B.
Tang Wang
Arinc, Inc.
Phan Dao L.
Tarcza Thomas
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