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The Global Positioning System A Shared National Asset (1995) / Chapter Skim
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Pages 160-160

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From page 160...
... Because the ionospheric effect is dispersive and is a function of frequency, dualfrequency GPS receivers can calibrate this effect by measuring the differential delay and/or phase advance between the Lo and L2 frequencies, thus eliminating a great deal of the atmospheric error. Civil users do not have direct access to dual frequency observations but have several means for reducing the ionospheric error contribution.
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Key Terms

  • ionospheric error
  • gps receivers
  • receiver noise
  • gps signal
  • typical horizontal

  • horizontal dop
  • gps receiver
  • range error
  • ionospheric correction


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