Time Transfer vith GLONASS Navigation Satellites

I. D. Kitching, S. A. Dale, P. Daly

Abstract:	When fully operational the Soviet Union's GLONASS satellite navigation system will provide 24 hour global position and velocity determination by users. Although a minimum of four satellites are required to enable instantaneous position fixing with no prior knowledge of user position or time, only one is required to enable precise time transfer to a known location. Using the Glonass low precision codes, and without using dual frequency measurements, time transfer with Glonass is possible to the order of 100 nanoseconds or better. This paper discusses the current Glonass system status and then describes the process of time transfer. The timing references in the Glonass civil C/A code signals are highlighted and comparisons made between data parameter representation in the Glonass data message and those transmitted by the NAVSTAR GPS. Examples of clock correction data transmitted by the Glonass satellites are presented to show how the satellite and system clock offsets have been managed by ths GLONASS Control Segment. Finally the relationship between Glonass system time, Moscow Time and external time systems are mentioned.
Published in:	Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988) September 19 - 23, 1988 The Broadmoor Hotel Colorado Spring, CO
Pages:	487 - 493
Cite this article:	Kitching, I. D., Dale, S. A., Daly, P., "Time Transfer vith GLONASS Navigation Satellites," Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988), Colorado Spring, CO, September 1988, pp. 487-493.
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