One-Way GPS Time Transfer 2000

Abstract

On 1 May 2000, the White House issued a Presidential directive for the Global Positioning System (GPS) to turn off Selective Availability (SA) on 2 May 2000. For nearly a decade, authorized user performance of one-way synchronization via GPS has improved every single year. This paper provides an annual assessment of how well the Global Positioning System can predict and disseminate UTC (USNO) to these specified users, based on data generated and processed by the United States Naval Observatory (USNO). And, because the recent Presidential directive now permits civilian timing users to exploit nearly the same, impressive time transfer accuracy of GPS, these annual metrics now offer a fairly representative performance assessment for both military and civilian timing users.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2000
Accession Number
ADA485769

Entities

People

  • Al Gifford
  • Jule Mcneff
  • Scott Pace

Organizations

  • National Institute of Standards and Technology

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Algorithms
  • Artificial Satellites
  • Clocks
  • Department Of Defense
  • Frequency Standards
  • Global Positioning Systems
  • Measurement
  • Military Applications
  • Navigation
  • Space Based
  • Standards
  • Statistical Analysis
  • Time Intervals
  • Time Standards
  • United States

Readers

  • Astronomy and Astrophysics.
  • Computer Networking
  • Defense Technology Research and Development.

Technology Areas

  • Space