Real-Time Time and Frequency Transfer Using GPS Carrier Phase Observations

Carsten Rieck, Per Jarlemark, Kenneth Jaldehag, Jan Johansson

Abstract:	A client-server based data communication scheme was developed in order to establish a permanent and dynamic real-time GPS network for relative time and frequency transfer. The Kalman-filter-based real-time processor uses station pairwise common-view phase observations for estimating the receiver clock and tropospheric parameters. Orbit determination is based on real-time broadcast ephemerides and station coordinates are fixed and known. Real-time estimates were compared with clock solutions from postprocessed data resulting in standard deviation values in the order of 50 ps for short baselines.
Published in:	Proceedings of the 35th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 4, 2003 Hilton Resort on Mission Bay San Diego, California
Pages:	157 - 172
Cite this article:	Rieck, Carsten, Jarlemark, Per, Jaldehag, Kenneth, Johansson, Jan, "Real-Time Time and Frequency Transfer Using GPS Carrier Phase Observations," Proceedings of the 35th Annual Precise Time and Time Interval Systems and Applications Meeting, San Diego, California, December 2003, pp. 157-172.
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