About Compass Time and Its Coordination with Other GNSSs

Abstract

Compass is the global satellite navigation system of China, which is in the process of construction. The first test satellite was lunched on 17 April 2007. As timekeeping infrastructure is the most important part for a GNSS system, the traceability of Compass system time (named BDT) and its coordination with other GNSSs are discussed, as is the possible link from Compass time to national standard time. The National Time Service Centre (NTSC) will most probably act as the backup timing center of the Compass system, through which Compass time can finally be traced to UTC. Offering the time offset between Compass time and other GNSS systems is considered in order to facilitate the user's need for interoperability. A prospective technique for coordinating Compass with other GNSSs, and suggestions on promoting international cooperation are proposed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2007
Accession Number
ADA483539

Entities

People

  • Haitao Wu
  • Shaowu Dong
  • Xiaohui Li

Organizations

  • Chinese Academy of Sciences

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Astronomical Observatories
  • Atomic Beam Masers
  • Clocks
  • Earth Orbits
  • Frequency
  • Geosynchronous Orbits
  • Global Navigation Satellite Systems
  • Interoperability
  • Medium Earth Orbits
  • Navigation
  • Navigation Satellites
  • Orbits
  • Satellite Navigation Systems
  • Standards
  • Time Intervals

Readers

  • Defense Acquisition Program Management
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space