Precise GPS Ephemerides From DMA and NGS Tested by Time Transfer

W. Lewandowski, G. Petit, C. Thomas

Abstract:	It has already been shown that the use of DMA precise ephemerides brings a significant improvement to the accuracy of GPS time transfer. At present a new set of precise ephemerides produced by the NGS has been made available to the timing community. This study demonstrates that both types of precise ephemerides improve long-distance GPS time transfer and remove the effects of SA degradation of broadcast ephemerides. The issue of overcoming SA is do discussed in terms of the routine availability of precise ephemerides.
Published in:	Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting December 3 - 5, 1991 Pasadena, California
Pages:	59 - 70
Cite this article:	Lewandowski, W., Petit, G., Thomas, C., "Precise GPS Ephemerides From DMA and NGS Tested by Time Transfer," Proceedings of the 23th Annual Precise Time and Time Interval Systems and Applications Meeting, Pasadena, California, December 1991, pp. 59-70.
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