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Satellite radio wave capturing method for a global positioning system (GPS) receiver

  • US 5,323,164 A
  • Filed: 03/05/1993
  • Issued: 06/21/1994
  • Est. Priority Date: 03/16/1992
  • Status: Expired due to Term
First Claim
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1. A satellite radio wave capturing method for a Global Positioning System (GPS) receiver, in which a search center frequency is set for every satellite radio wave to be captured and an oscillating frequency of an oscillator in said GPS receiver is changed using said set search center frequency as a reference, thereby capturing a radio wave of a target satellite, comprising the steps of:

  • calculating an offset value of said oscillator by subtracting a Doppler frequency deviation of a first captured satellite radio wave from an actual received frequency of said first captured satellite radio wave; and

    resetting said search center frequency using said calculated offset value with respect to second and subsequent satellite radio waves to be captured.

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