Replicating UTC(NIST) at Remote Sites

Michael A. Lombardi, Andrew N. Novick, Jose Mauricio Lopez-Romero, and Rodrigo Ramos P.

Abstract:	The National Institute of Standards and Technology (NIST) is deploying disciplined oscillators that are referenced to the UTC(NIST) time scale through common-view observations of Global Positioning System (GPS) satellites. We present measurement results from four NIST disciplined oscillators (NISTDOs), three located in the United States, and one located in Concepción, Chile. These devices replicate the NIST time scale at remote sites, and uncertainties of less than 5 ns are demonstrated at all locations. The results were verified by utilizing the national time scale of Mexico as an independent check standard. Further verification was obtained by directly comparing a NISTDO to UTC(NIST) in Boulder, Colorado.
Published in:	Proceedings of the 44th Annual Precise Time and Time Interval Systems and Applications Meeting November 26 - 29, 2012 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	79 - 90
Cite this article:	Lombardi, Michael A., Novick, Andrew N., Lopez-Romero, Jose Mauricio, P., Rodrigo Ramos, "Replicating UTC(NIST) at Remote Sites," Proceedings of the 44th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, November 2012, pp. 79-90.
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