Title :
Coordinating GPS calibrations among NIST, NRL, USNO, PTB, and OP
Author :
Weiss, Marc ; Zhang, Victor ; White, J. ; Senior, K. ; Matsakis, D. ; Mitchell, S. ; Uhrich, P. ; Valat, D. ; Lewandowski, W. ; Petit, G. ; Bauch, A. ; Feldman, T. ; Proia, A.
Author_Institution :
Time & Freq. Div., NIST, Boulder, CO, USA
Abstract :
Reviewing calibration results over the history since early 1980´s among several labs shows very mixed results. The best stabilities of GPS receivers, as given by calibrations, are of the order of a few nanoseconds or better over a year, though many results are quite a bit worse. Absolute calibrations show similar potential, though there are problems. We conclude that more calibrations and standard methods are needed.
Keywords :
Global Positioning System; atomic clocks; calibration; radio receivers; GPS receivers; NIST; NRL; OP; PTB; USNO; coordinating calibration; Calibration; Delay; Global Positioning System; NIST; Receivers; Satellites; Uncertainty;
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
Print_ISBN :
978-1-61284-111-3
DOI :
10.1109/FCS.2011.5977869
