The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 1992
Filed:
Nov. 21, 1989
La Mar Timothy, Kaysville, UT (US);
Michael L Ownby, Sandy, UT (US);
Douglas G Bowen, Spanish Fork, UT (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A system for determining attitude of airborne vehicles or surface vehicles is provided with three fixed position antennas separated from each other by a predetermined calibrated distance. Each antenna is connected to a GPS receiver and the receiver outputs are coupled to a phase comparator which establishes the phase difference between the RF carrier signal of the three possible pairs of receivers. The outputs of the phase comparator are coupled to a preprogrammed dedicated processor that calculates a coordinate frame which fixes the attitude of the plurality of antennas in space. The processor then makes a comparison with a precalibrated reference attitude stored in an associated memory so that a true attitude value of roll, pitch and yaw may be calculated and employed to reposition the gyro of the moving vehicle.