Characterization of Phase and Multipath Errors for an Aircraft GPS Antenna

C. Douglas Hardwick and Jeffrey Liu

Abstract:	In the application of GPS to airborne gravity, the centimetre-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 the aircraft.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	491 - 498
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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