UTC Dissemination to the Real-Time User: The Role of USNO

Mihran Miranian

Abstract:	Coordinated Universal Time (UTC) is available worldwide via the Global Positioning System (GPS). The UTC disseminated by GPS is referenced to the U.S. Naval Observatory Master Clock, UTC(USNO), which is regularly steered and maintained as close as possible to UTC(BIPM), the international time scale. This paper will describe the role of the USNO in monitoring the time disseminated by the GPS and the steps involved to ensure its accuracy to the user. The paper will also discuss the other sources of UTC(USNO) and the process by which UTC(USNO) is steered to UTC(BIPM).
Published in:	Proceedings of the 27th Annual Precise Time and Time Interval Systems and Applications Meeting November 29 - 1, 1995 The Doubletree Hotel at Horton Plaza San Diego, California
Pages:	75 - 86
Cite this article:	Miranian, Mihran, "UTC Dissemination to the Real-Time User: The Role of USNO," Proceedings of the 27th Annual Precise Time and Time Interval Systems and Applications Meeting, San Diego, California, November 1995, pp. 75-86.
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