The Role of Time and Frequency in Future Systems

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1995
Accession Number
ADA513307

Entities

People

  • Al Gifford
  • Samuel R. Stein
  • Tom Celano

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Clocks
  • Communication Systems
  • Data Transmission
  • Department Of Defense
  • Frequency
  • Global Positioning Systems
  • Ground Stations
  • Laser Communications
  • Measurement
  • Navigation
  • Networks
  • Optical Communications
  • Radio Links
  • Satellite Communications
  • Wireless Communications

Readers

  • Educational Psychology
  • Logistics and Supply Chain Management.
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space