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A new polar alignment algorithm based on the Huber estimation filter with the aid of BeiDou Navigation Satellite System

Author

Listed:
  • Bin Zhao
  • Qinghua Zeng
  • Jianye Liu
  • Chunlei Gao
  • Tianyu Zhao

Abstract

For aircrafts equipped with BeiDou Navigation Satellite System/Strapdown Inertial Navigation System integrated navigation system, BeiDou Navigation Satellite System information can be used to achieve autonomous alignment. However, due to the complex polar environment and multipath effect, BeiDou Navigation Satellite System measurement noise often exhibits a non-Gaussian distribution that will severely degrade the estimation accuracy of standard Kalman filter. To address this problem, a new polar alignment algorithm based on the Huber estimation filter is proposed in this article. Considering the special geographical conditions in the polar regions, the dynamic model and the measurement model of BeiDou Navigation Satellite System/Strapdown Inertial Navigation System integrated alignment system in the grid frame are derived in this article. The BeiDou Navigation Satellite System measurement noise characteristics in the polar regions are analyzed and heavy-tailed characteristics are simulated, respectively. Since the estimation accuracy of standard Kalman filter can be severely degraded under non-Gaussian noise, a Kalman filter based on the Huber estimation is designed combining grid navigation system and generalized maximum likelihood estimation. The simulation and experiment results demonstrate that the proposed algorithm has better robustness under non-Gaussian noise, and it is effective in the polar regions. By employing the proposed algorithm, the rapidity and accuracy of the alignment process can be improved.

Suggested Citation

  • Bin Zhao & Qinghua Zeng & Jianye Liu & Chunlei Gao & Tianyu Zhao, 2021. "A new polar alignment algorithm based on the Huber estimation filter with the aid of BeiDou Navigation Satellite System," International Journal of Distributed Sensor Networks, , vol. 17(3), pages 15501477211, March.
    • Handle: RePEc:sae:intdis:v:17:y:2021:i:3:p:15501477211004115
    DOI: 10.1177/15501477211004115
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    References listed on IDEAS

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    1. Li-Jun Song & Guang-Qiao Yang & Wang-Liang Zhao & You-Jun Ding & Feng Wu & Xing He, 2020. "The Inertial Integrated Navigation Algorithms in the Polar Region," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-9, October.
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