Inertial Platform Stabilization Using GPS Velocity Feedback

John Q. Zhang

Abstract:	To achieve a leveling accuracy of 2 arc seconds for airborne gravimetry, GPS velocity information is integrated into an inertial platform to damp Schuler oscillations of the platform leveling errors and, at the same time, maintain the Schuler characteristics of the platform system to avoid the influence of vehicle motions. GPS velocity errors using single point and double difference methods are analyzed in both the time and frequency domains. Simulations are done for the north leveling loop of an inertial platform. It is shown that single point (SA off or a cryptographic key is used) and double difference GPS velocities can be used for this application.
Published in:	Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993) September 22 - 24, 1993 Salt Palace Convention Center Salt Lake City, UT
Pages:	757 - 764
Cite this article:	Zhang, John Q., "Inertial Platform Stabilization Using GPS Velocity Feedback," Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993), Salt Lake City, UT, September 1993, pp. 757-764.
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