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Precise time and Time Interval (PTTI) measurements from the navigation technology satellites and the GPS NAVSTAR-4 satelliteA time domain estimate for the NAVSTAR-4 SV clock offset was obtained for each SV pass over the GPS monitor sites, using a smoothed reference ephemeris, with corrections for ionospheric delay, tropospheric delay, earth rotation and relativistic effects. Conversion from the time domain to the frequency domain was made using the two sample Allan Variance; sigma-tau plots used to identify the noise processes. Estimates of flicker and white frequency noise for the NAVSTAR-4 rubidium frequency standard were obtained. The contribution of the reference ground clocks and other error sources to the frequency stability estimates were also considered.
Document ID
19800020608
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Buisson, J. A.
(Naval Research Lab. Washington, DC, United States)
Mccaskill, T., B.
(Naval Research Lab. Washington, DC, United States)
Oaks, O. J.
(Naval Research Lab. Washington, DC, United States)
Jeffries, M. M.
(Naval Research Lab. Washington, DC, United States)
Stebbins, S. B.
(Naval Research Lab. Washington, DC, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Publication Information
Publication: NASA. Goddard Space Flight Center Proc. of the 11th Ann. Precise Time and Time Interval (PTTI) Appl. and Planning Meeting
Subject Category
Physics (General)
Accession Number
80N29109
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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