Modeling UT1-UTC and Polar Motion On-Board GPS Satellites

Jackson R. Ferguson Jr., Raynor L. Duncombe

Abstract:	Autonomous navigation of GPS satellites requires on-board knowledge of UT1-UTC and polar motion values. This study examines the ability of a fourth-order and fifth-order Fourier series to predict UTl-UTC values over six months based on one or three year BIH tables. Results show that UT1-UTC errors of approximately 40 ms occur over six months when three-year data bases are used. Polar motion. contributes another .02 arcsec or 1. 3 ms.
Published in:	Proceedings of the 1984 National Technical Meeting of The Institute of Navigation January 17 - 19, 1984 San Diego, CA
Pages:	191 - 194
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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