MODELING UT1-UTC AND POLAR MOTION ON-BOARD GPS SATELLITES

Jackson R. Ferguson, Jr. and Raynor L. Duncombe

Peer Reviewed

Abstract:	Autonomous navigation of GPS satellites requires on-board knowledge of UTl-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 UTl-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:	NAVIGATION, Journal of the Institute of Navigation, Volume 31, Number 3
Pages:	209 - 219
Cite this article:	Ferguson, Jackson R., Jr.,, Duncombe, Raynor L., "MODELING UT1-UTC AND POLAR MOTION ON-BOARD GPS SATELLITES", NAVIGATION, Journal of The Institute of Navigation, Vol. 31, No. 3, Fall 1984, pp. 209-219.
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