COMMON-VIEW GPS TIME TRANSFER ACCURACY AND STABILITY RESULTS

James R. Semler

Abstract: This paper presents the results of time and frequency dissemination research at Interstate Electronics that achieves 10-nanosecond timing accuracy and stability of parts in 1014 over continental baselines. Global Positioning System (GPS) receiver data is processed by a differential, common-view technique that cancels most of the cardinal errors. We characterize the noise in the GPS data by using multicorner-hat separation-of-variances techniques. These noise values set Kalman smoother parameters for removal of random noise in the common-view data. The disagreement between various satellite measurements provides a measure of common-view GPS accuracy. We present a summary of the analytical concepts, followed by the results of realworld data processing in common-view tests between Interstate/ Anaheim and the United States Naval Observatory (USNO). The results of side-by-side GPS receiver testing, using the algorithms described here, provide measurements of GPS receiver stability, which can reach levels of 1 nanosecond per sidereal day.
Published in: Proceedings of the 21th Annual Precise Time and Time Interval Systems and Applications Meeting
November 28 - 30, 1989
Sheraton Hotel
Redondo Beach, California
Pages: 537 - 548
Cite this article: Semler, James R., "COMMON-VIEW GPS TIME TRANSFER ACCURACY AND STABILITY RESULTS," Proceedings of the 21th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, November 1989, pp. 537-548.
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