GNSS Activities and Performance at USNO

Stephen Mitchell, Ed Powers, Jeff Prillaman, Valeri Makarov, and Demetrios Matsakis

Abstract:	This paper presents selected recent GNSS activities in the Time Service Department at the U. S. Naval Observatory in Washington, DC. Items investigated include relative receiver calibration; evaluation of the recent performance of GNSS receivers; zero-age corrections applied to operational PPS receiver data to compute a better one-day value for the USAF; a brief presentation of an algorithm to detect and correct discrete jumps in time-series data including the potential applications; applications of PPP for GPS time transfer as well as the ability to determine receiver instability through common-antenna, common-clock PPP solutions; GPS Time Transfer Trips; USNO's contributions to the IGS MGEX; and progress on GPS-to-GNSS Time Transfer (GGTO).
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:	65 - 78
Cite this article:	Mitchell, Stephen, Powers, Ed, Prillaman, Jeff, Makarov, Valeri, Matsakis, Demetrios, "GNSS Activities and Performance at USNO," Proceedings of the 44th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, November 2012, pp. 65-78.
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