UTC Dissemination to the Real-Time User: The Role of USNO

Abstract

Coordinated Universal Time (UTC) is available worldwide via the Global Positioning System (GPS). The UTC disseminated by GPS is referenced to the U.S. Naval Observatory Master Clock, UTC(USNO), which is regularly steered and maintained as close as possible to UTC 9 (BIPM), the international time scale. This paper will describe the role of the USNO in monitoring the time disseminated by the GPS and the steps involved to ensure its accuracy to the user. The paper will also discuss the other sources of UTC(USNO) and the process by which UTC(USNO) is steered to UTC(BIPM).

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1995
Accession Number
ADA502461

Entities

People

  • Mihran Miranian

Organizations

  • United States Naval Observatory

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Atomic Beam Masers
  • California
  • Clocks
  • Coast Guard
  • Department Of Defense
  • Frequency
  • Global Positioning Systems
  • Loran
  • Navigation
  • Navigation Satellites
  • Observatories
  • Satellite Navigation Systems
  • Standards
  • Time Intervals
  • United States

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space