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Inertial navigation system including self-contained performance validating arrangement

  • US 5,301,114 A
  • Filed: 06/11/1992
  • Issued: 04/05/1994
  • Est. Priority Date: 06/11/1992
  • Status: Expired due to Fees
First Claim
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1. An inertial navigation system including a self-contained performance validating arrangement, comprising:

  • an inertial sensor assembly including a substantially orthogonal triad having three gyros and three accelerometers;

    said inertial sensor assembly including a fourth gyro and a fourth accelerometer having input axes which symmetrically bisect the input axes of the orthogonal triad;

    means for establishing an analytical equivalent to data from the fourth gyro and the fourth accelerometer from measurements made by the orthogonal triad including means for providing compensated incremental angle vectors, means for providing compensated incremental velocity vectors, and means for transforming the incremental angle vectors and the incremental velocity vectors to an analytical equivalent measurement along the axes of the fourth gyro and the fourth accelerometer, respectively; and

    means for comparing data from the fourth gyro and the fourth accelerometer to said analytical equivalent for validating the performance of the inertial navigation system.

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