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A precise GPS-based time and frequency systemAn approach to implementing a compact, highly reliable and precise Master Time and Frequency subsystem usable in a variety of applications is described. These applications include, among others, Satellite Ground Terminals, Range Timing Stations, Communications Terminals, and Power Station Timing subsystems. All time and frequency output signals are locked to Universal Time via the GPS Satellite system. The system provides for continued output of precise signals in the event of GPS signal interruption from antenna or lead-in breakage or other causes. Cost/performance tradeoffs affecting system accuracy over the short, medium, and long term are discussed. A unique approach to redundant system design provides an architecture with the reliability advantage of triple-redundant majority voting and the cost advantages of dual-redundant elements. The system can be configured to output a variety of precise time and frequency signals and the design can be tailored to output as few, or as many, types and quantities of signals as are required by the application.
Document ID
19940006506
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcnabb, Jack
(TRAK Microwave Corp. Tampa, FL, United States)
Fossler, Earl
(TRAK Microwave Corp. Tampa, FL, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Publication Information
Publication: NASA. Goddard Space Flight Center, The 24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Subject Category
Physics (General)
Accession Number
94N10978
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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