An Overview of the Time Distribution System for the Wide Area Augmentation Systems (WAAS)

W. Klepczynski

Abstract:	This paper describes the functions, requirements, and objectives of the Time Distribution System (TDS). It should be pointed out that the WAAS TDS has not yet been developed because it is a component of the final phase of WAAS development. However WMS Phase 1 allows for the inclusion of the TDS into the WAAS if it is developed before the final phase of WAAS. The TDS will be located at the U.S. Naval Observatory (USNO). It will be used to provide the offset data between WAAS Network Time (WNT) and Coordinated Universal Time (UTC). The offset data will then be passed on to the WAAS Master Station (WMS) for transfer to the Geostationary Uplink Station (GUS) and broadcast to users of precise time through the WMS Signal-in-Space (SIS).
Published in:	Proceedings of the 30th Annual Precise Time and Time Interval Systems and Applications Meeting December 1 - 3, 1998 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	439 - 444
Cite this article:	Klepczynski, W., "An Overview of the Time Distribution System for the Wide Area Augmentation Systems (WAAS)," Proceedings of the 30th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, December 1998, pp. 439-444.
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