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Altimeter with calibration

  • US 20110077898A1
  • Filed: 11/04/2010
  • Published: 03/31/2011
  • Est. Priority Date: 06/11/2008
  • Status: Active Grant
First Claim
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1. A dead reckoning altimeter, comprising:

  • an estimator configured to use a forward speed, a yaw angle rate, a forward acceleration and external altitude information in order to estimate an error in said acceleration due to an accelerometer bias without a requirement for an initial estimate of said accelerometer bias; and

    an output converter configured to use said forward speed, said yaw angle rate, said forward acceleration and said estimated accelerometer bias to calculate a change in altitude.

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