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RAPID SELF-ALIGNMENT OF A STRAPDOWN INERTIAL SYSTEM THROUGH REAL-TIME REPROCESSING

  • US 20070282529A1
  • Filed: 05/31/2006
  • Published: 12/06/2007
  • Est. Priority Date: 05/31/2006
  • Status: Active Grant
First Claim
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1. A method comprising:

  • executing real-time navigation software on real-time inertial data to generate real-time navigation data;

    executing real-time Kalman filter software on the real-time navigation data and real-time aiding data;

    recording the real-time inertial data and the real-time aiding data as real-time input data in a buffer;

    initializing a playback process;

    executing playback navigation software on buffered inertial data to generate playback navigation data; and

    executing playback Kalman filter software on the playback navigation data and buffered aiding data, wherein the execution of the real-time navigation software and the real-time Kalman filter software effect a real-time alignment process, and wherein the playback navigation software and the playback Kalman filter software effect an alignment process executed at a faster rate than the real-time navigation software and real-time Kalman filter software.

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