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The Global Positioning System A Shared National Asset (1995) / Chapter Skim
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Pages 124-124

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From page 124...
... In order to improve the accuracy and the instantaneous frequency offset further, more accurate atomic clocks must be used on the satellites that will be carrying atomic ~ According to Martin Marietta Astro Space Division of Lockheed-Martin, atomic clocks have been used in the past on GPS spacecraft and have provided a mixed heritage of superb stability and long life in some cases but unexplained premature degradation and failure in others. Each Block IIR satellite will carry two rubidium clocks and one cesium clock.
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Key Terms

  • block iir
  • time transfer
  • iir satellite
  • control station
  • gps satellite

  • atomic clocks
  • clock offset
  • clock errors


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