Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Replicating UTC(NIST) at Remote Sites

Published

Author(s)

Michael A. Lombardi, Andrew N. Novick, J. Mauricio Lopez-Romero, Rodrigo Ramos

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 Concepcion, Chile. These devices replicate the NIST time scale at remote sites and uncertainties of less than 5 ns are demonstrated at all locations. We verified, and in some cases improved the results, by utilizing UTC(CNM), 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.
Proceedings Title
Proceedings of 2012 Precise Time and Time Interval (PTTI) Meeting
Conference Dates
November 26-29, 2012
Conference Location
Reston, VA

Keywords

disciplined oscillator, frequency, time, time scale

Citation

Lombardi, M. , Novick, A. , , J. and Ramos, R. (2012), Replicating UTC(NIST) at Remote Sites, Proceedings of 2012 Precise Time and Time Interval (PTTI) Meeting, Reston, VA (Accessed December 3, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created November 26, 2012, Updated February 19, 2017