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Attitude angle sensor correcting apparatus for an artificial satellite

  • US 6,336,062 B1
  • Filed: 12/07/2000
  • Issued: 01/01/2002
  • Est. Priority Date: 12/10/1999
  • Status: Expired due to Term
First Claim
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1. An attitude angle correcting apparatus for an artificial satellite, comprising:

  • an attitude angle sensor data memory for storing a signal output from sensing means responsive to an attitude angle of the artificial satellite;

    an image data memory for storing geographical image data representative a same geographical area, where a (Ground Control Point) GCP is located, shot at a plurality of positions;

    a satellite attitude estimator for generating estimated attitude data of the artificial satellite on the basis of a difference between a true GCP value representative of a true position of the GCP and a measured GCP value produced by image measurement using said geographical image data stored in said image data memory; and

    an attitude angle sensor data corrector for estimating an attitude angle of the artificial satellite by using said estimated attitude data, and then correcting measured attitude angle data, which is read out of said attitude angle sensor data memory, with said attitude angle estimated to thereby generate an estimated attitude angle signal.

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