CHARACTERISTICS AND APPLICATIONS OF PRECISE GPS CLOCK SOLUTIONS EVERY 30 SECONDS

J. F. Zumberge, M. M. Watkins, and F. H. Webb

Peer Reviewed

Abstract:	Using carrier phase and pseudorange data from a small network of globally distributed GPS receivers with precise time references, we are able to estimate GPS clock parameters every 30 s, with subdecimeter accuracy, in a computationally efficient manner. The accuracy obtained is a factor of 100 to 1000 times better than that of clocks in the broadcast navigation message, and allows post- processing of high-rate single-receiver kinematic GPS data with few-centimeter-level precision when used in conjunction with precise GPS orbits. The amplitude of the daily clock variability is typically 24 m for satellites affected by Selective Availability @A). Temporal variations are well modeled by an autocorrelation function p = exp( - d2 1272) with r = 106 s.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 44, Number 4
Pages:	449 - 456
Cite this article:	Export Citation https://doi.org/10.1002/j.2161-4296.1997.tb02360.x
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