CHARACTERIZATION OF PHASE AND MULTIPATH ERRORS FOR AN AIRCRAFT GPS ANTENNA

C. D. Hardwick and Jeffrey Liu

Peer Reviewed

Abstract:	In the application of GPS to airborne gravity measurements, the centimeter-level phase errors of an aircraft-mounted antenna can influence the results. Furthermore, the aircraft structure can give rise to multipath errors that are even more significant. This paper describes a project to characterize the errors of an aircraft-mounted antenna by carrying out short-baseline measurements over several days to build an error map as a function of satellite direction relative to the aircraft body frame. The calibration model is developed based on a set of carrier phase residuals. The effectiveness of the model is demonstrated by using an independent set of test data. This antenna calibration should improve the estimation of vertical acceleration of aircraft.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 43, Number 1
Pages:	41 - 54
Cite this article:	Hardwick, C. D., Liu, Jeffrey, "CHARACTERIZATION OF PHASE AND MULTIPATH ERRORS FOR AN AIRCRAFT GPS ANTENNA", NAVIGATION: Journal of The Institute of Navigation, Vol. 43, No. 1, Spring 1996, pp. 41-54.
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