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Method and apparatus for limiting attitude drift during turns

  • US 20020193916A1
  • Filed: 08/09/2002
  • Published: 12/19/2002
  • Est. Priority Date: 12/22/1999
  • Status: Active Grant
First Claim
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1. An apparatus for outputting roll angle information comprising:

  • an input for receiving a signal indicative of roll rate;

    a first device, coupled to said input, for obtaining an Euler roll angle from said signal;

    a first error correction device, coupled to said first device, for correcting errors in said Euler roll angle;

    a second error correction device, coupled to said first error correction device, for supplying a roll angle estimate to said first error correction device, during a period of time when said Euler roll angle exceeds a predefined limit; and

    an output for outputting a signal indicative of corrected roll angle information.

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