APPARENT DIURNAL EFFECTS IN THE GLOBAL POSITIONING SYSTEM

M. Weiss

Abstract:	Since the Global Positioning System (GPS) has been used for common view time and frequency transfer between remote locations various systematic effects have been observed. These effects have been discussed on various occasions appearing as biases between different daily measurements as well as obstructing closure in around-the-world time transfer. In addition we may attempt to look at GPS satellites from several locations around the world, after linking the ground station clocks using GPS. The results are that there are apparent diurnal variations in many of the SV clocks. We study these systematic effects here, the biases in common view time transfer, the lack of closure in around-the-world time transfer, and the diurnal variations in the sv clocks. We conclude that the diurnal effects are primarily due to errors in the transmitted satellite ephemeris and ionospheric model.
Published in:	Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting December 1 - 3, 1989 Sheraton Hotel Redondo Beach, California
Pages:	33 - 48
Cite this article:	Weiss, M., "APPARENT DIURNAL EFFECTS IN THE GLOBAL POSITIONING SYSTEM," Proceedings of the 19th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, December 1987, pp. 33-48.
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