Towards 10 Millimetre Real-Time Position Determination and 30 Picosecond Time-Transfer Capability With the Next-Generation of Global Navigation Satellite Systems (GNSS)

Clifford C. Hodge, John A. Davis, John C. Gallop, David W. Allan, Neil Ashby, Stefan Bedrich, Leonard S. Cutler, Jorg Hahn, Hartmut Nau, Robert H. Kern, Wlodzimierz Lewandowski, Lutfollah Maleki and Robert F. C. Vessot

Abstract:	This paper studies the state-of-the-art in time and frequency technologies: future clocks, time-transfer and time-dissemination techniques, and their application towards the next-generation of Global Navigation Satellite Systems. The requirement for an upgrade to GPS is discussed, and future market areas are identified. We briefly describe the exciting developments towards a seamless, international, wholly-civil GNSS and show the importance of frequency-band allocation issues in defining the GNSS system architecture. It is concluded that 10 millimetre real-time position determination and 30 picosecond time-transfer capability is technologically achievable, but that the political and institutional issues must first be resolved.
Published in:	Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996) September 17 - 20, 1996 Kansas City, MO
Pages:	1127 - 1142
Cite this article:	Hodge, Clifford C., Davis, John A., Gallop, John C., Allan, David W., Ashby, Neil, Bedrich, Stefan, Cutler, Leonard S., Hahn, Jorg, Nau, Hartmut, Kern, Robert H., Lewandowski, Wlodzimierz, Maleki, Lutfollah, Vessot, Robert F. C., "Towards 10 Millimetre Real-Time Position Determination and 30 Picosecond Time-Transfer Capability With the Next-Generation of Global Navigation Satellite Systems (GNSS)," Proceedings of the 9th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1996), Kansas City, MO, September 1996, pp. 1127-1142.
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