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USNO GPS programInitial test results indicated that the Global Positioning System/Time Transfer Unit (GPS/TTU) performed well within the + or - 100 nanosecond range required by the original system specification. Subsequent testing involved the verification of GPS time at the master control site via portable clocks and the acquisition and tracking of as many passes of the space vehicles currently in operation as possible. A description and discussion of the testing, system modifications, test results obtained, and an evaluation of both GPS and the GPS/TTU are presented.
Document ID
19810018948
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Putkovich, K. (Naval Observatory Washington, DC, United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1981
Publication Information
Publication: NASA. Goddard Space Flight Center Proc. of the 12th Ann. Precise Time and Time Interval Appl. and Planning Meeting
Subject Category
Instrumentation And Photography
Accession Number
81N27486
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19810018929Collected WorksProceedings of the 12th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
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