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Measurement fault detection

  • US 7,356,445 B2
  • Filed: 12/15/2003
  • Issued: 04/08/2008
  • Est. Priority Date: 08/28/2000
  • Status: Expired due to Fees
First Claim
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1. A measurement fault detection system in a sequential measurement processing estimator, the measurement fault detection system comprising:

  • a plurality of measurements, each measurement having an associated measurement time;

    a sorter that sorts the plurality of measurements in order of increasing fault probability;

    a variable-gain filter in signal communication with the sorter;

    an estimate of each of the plurality of measurements generated by the variable-gain filter, wherein each estimate includes a state matrix and a covariance matrix propagated forward or backward in time from the time of the measurement with a next lowest fault probability in response to the time of the measurement with the next lowest fault probability being earlier or later, respectively, than the time of the measurement for which the estimate is then being generated; and

    a state matrix and a covariance matrix propagated forward from the time of the measurement with a highest fault probability to a reporting time.

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