GPS Block IIF Atomic Frequency Standard Analysis

F. Vannicola, R. Beard, D. Koch, A. Kubik, D. Wilson, J. White

Abstract:	The Naval Research Laboratory (NRL) currently has under life test four GPS Block IIF atomic frequency standards (AFS); two production Excelitas Rubidium Frequency Standards (RFS) and two production Symmetricom Digital Cesium Beam Frequency Standards (DCBFS). NRL, in conjunction with the GPS Directorate, GPS Block IIF prime contractor Boeing and the AFS manufacturers, has been conducting a life test on the GPS IIF AFS units. The RFS have been under test since August 2008 and the DCBFS have been intermittently tested since August 2004. There are currently four GPS Block IIF satellites on-orbit, three operate on a RFS and one operates on a DCBFS. This paper will provide a status of the current NRL life test and performance comparisons with the on-orbit AFS.
Published in:	Proceedings of the 45th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 5, 2013 Hyatt Regency Bellevue Bellevue, Washington
Pages:	244 - 249
Cite this article:	Vannicola, F., Beard, R., Koch, D., Kubik, A., Wilson, D., White, J., "GPS Block IIF Atomic Frequency Standard Analysis," Proceedings of the 45th Annual Precise Time and Time Interval Systems and Applications Meeting, Bellevue, Washington, December 2013, pp. 244-249.
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