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The Global Positioning System A Shared National Asset (1995) / Chapter Skim
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Pages 109-109

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From page 109...
... The current plan for testing the autonomous ranging capability is initially to download the 15-m~nute ranging data from each satellite's Kalman Filter once per day to the OCS so that it can be compared with the ground-based data derived from the MCS's Kalman Filter. After successful testing of autonomous satellite ranging capability is completed, clock and ephemeris corrections will be determined with the on-board Kalman Filter, and the satellites will automatically update the navigation message every hour.
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Key Terms

  • kalman filter
  • block iir
  • ephemeris error
  • combined clock
  • ephemeris corrections

  • navigation message
  • satellite ranging
  • ranging data
  • communication crosslinks
  • accuracy improvements

  • force plans
  • ranging capability
  • planned block
  • space command
  • clock offset

  • iir operation
  • autonomous satellite
  • integrated corrections


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