Performance Analysis of an Integrated GPS/lnertial Attitude Determination System

Wendy Sullivan

Abstract:	The performance of an integrated GPS/inertial attitude determination system is investigated using a linear covari- ante analysis. The purpose of this investigation is to deter- mine the limiting error source of a GPS/inertial attitude determination system. This investigation is also intended to determine the level of attitude accuracy that may be achieved by a vehicle on orbit, and the effect on attitude accuracy of other factors, such as GPS attitude determina- tion method, gyroscope quality, and satellite selection scheme. A new figure of merit, Attitude Dilution of Preci- sion (ADOP), is defined for two possible GPS attitude determination methods, namely single difference and dou- ble difference interferometry. A satellite selection scheme is proposed using this figure of merit.
Published in:	Proceedings of the 1995 National Technical Meeting of The Institute of Navigation January 18 - 20, 1995 Disneyland Hotel Anaheim, CA
Pages:	783 - 791
Cite this article:	Sullivan, Wendy, "Performance Analysis of an Integrated GPS/lnertial Attitude Determination System," Proceedings of the 1995 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 1995, pp. 783-791.
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