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Position measuring apparatus

  • US 20050046614A1
  • Filed: 03/16/2004
  • Published: 03/03/2005
  • Est. Priority Date: 08/28/2003
  • Status: Active Grant
First Claim
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1. A position measuring apparatus, comprising:

  • a receiver for receiving signals from a plurality of satellites and measuring a position of a mobile station based on the received signals;

    an angle determination unit for determining angle range depending on positional relation between the measured position of the mobile station and an obstacle;

    an orbit information extraction unit for extracting orbit information indicating orbits of the satellites from the received signals;

    a measurement unit for measuring quality of the signals from at least one of the satellites that is expected to exist within the angle range based on the extracted orbit information; and

    a correction unit for correcting the measured position of the mobile station to another position having a different height, according to the measured quality of the signal from the at least one of the satellites.

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