Volume 33 Issue 09
Sep.  2007
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Li Da, Li Shaohong. Multisensor dynamic bias estimation with earth-centered earth-fixed coordinate system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(09): 1082-1085. (in Chinese)
Citation: Li Da, Li Shaohong. Multisensor dynamic bias estimation with earth-centered earth-fixed coordinate system[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(09): 1082-1085. (in Chinese)

Multisensor dynamic bias estimation with earth-centered earth-fixed coordinate system

  • Received Date: 25 Sep 2006
  • Publish Date: 30 Sep 2007
  • Registration is the necessary process of data fusion of multisensors system. A new registration algorithm was presented to estimate sensor biases with earth-centered earth-fixed (ECEF) coordinate system. This algorithm was used to correct dynamic systematic errors, and improved estimation performance by considering the effect of the geometry of the global. It was accomplished by constructing pseudomeasurements of the sensor biases based on local tracks, while the pseudomeasurements with additive noises that are zero-mean, white and with easily calculated covariances. Then the sensor bias estimates were obtained dynamically by using sequential process of Kalman filter (SKF). The algorithm could also be used for constant system biases estimation after some simple modification. Finally, Monte Carlo simulations were employed to evaluate the performance of the proposed algorithm, the result shows it can solve the registration problem effectively.

     

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