CGSIC Subcommittee on Time and CCDS Group of Experts on GPS Standardization

W. Lewandowski, Claudine Thomas, David W. Allan

Abstract:	The use of Global Positioning System (GPS)for worldwide comparisons of atomic clocks has been significantly improved during the last few years. Initially the GPS time transfers were realized with an accuracy of several tens of nanoseconds. Recent studies have shown that time transfer between continents can be realized with an accuracy of a few nanoseconds. Further progress is expected but, for many aspects, this requires coordinated action between timing centers as well as standardization of the receivers and processing of data. The introduction of Selective Availability (SA) also calls for coordination and standardization. Two bodies are concerned with these matters: CGSlC Subcommittee on Time and CCDS Group of Experts on GPS Standardization, This paper describes these bodies and report in their respective roles.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	207 - 214
Cite this article:	Lewandowski, W., Thomas, Claudine, Allan, David W., "CGSIC Subcommittee on Time and CCDS Group of Experts on GPS Standardization," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 207-214.
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