The Role of Time and Frequency in Future Systems

Samuel R. Stein, Al Gifford, Tom Celano

Abstract:	Introduction: Abstract Not Available Over the last twenty years, the Global Positioning System (GPS) has revolutionized the performance and the geographical availability of time and frequency dissemination, while at the same time reducing the cost to the individual user. This paper examines the question of what comes next for time and frequency dissemination. The question has two motivations: How can improved performance be achieved in the future, and how can redundant sources of time and frequency be provided to critical systems? A model is developed for time and frequency dissemination based on the time management performed in GPS. Several candidate systems for future time and frequency distribution are identified. One system-SONET telecommunications-is discussed in detail. Performance requirements and hardware implementations are presented.
Published in:	Proceedings of the 27th Annual Precise Time and Time Interval Systems and Applications Meeting November 29 - 1, 1995 The Doubletree Hotel at Horton Plaza San Diego, California
Pages:	51 - 58
Cite this article:	Stein, Samuel R., Gifford, Al, Celano, Tom, "The Role of Time and Frequency in Future Systems," Proceedings of the 27th Annual Precise Time and Time Interval Systems and Applications Meeting, San Diego, California, November 1995, pp. 51-58.
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