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Application of Adaptive Robust CKF in SINS/GPS Initial Alignment with Large Azimuth Misalignment Angle

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  • Zhang Bing
  • Wang Xiaodong
  • Lu Hao
  • Hao Zhaojun
  • Gu Changchao

Abstract

When the strapdown inertial navigation system does not perform coarse alignment, the misalignment angle is generally a large angle, and a nonlinear error model and a nonlinear filtering method are required. For large azimuth misalignment, the initial alignment technology with a large azimuth misalignment angle is researched in this paper. The initial alignment technology with a large azimuth misalignment angle is researched in this paper. First, the SINS/GPS nonlinear error model is established. Secondly, in the view of observation gross errors and inaccurate noise statistical characteristics, an adaptive robust CKF algorithm is proposed. Finally, according to the simulation analysis and experiment, the adaptive robust CKF algorithm can augment the stability and improve the filter estimation precision and convergence rate.

Suggested Citation

  • Zhang Bing & Wang Xiaodong & Lu Hao & Hao Zhaojun & Gu Changchao, 2021. "Application of Adaptive Robust CKF in SINS/GPS Initial Alignment with Large Azimuth Misalignment Angle," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-6, September.
    • Handle: RePEc:hin:jnlmpe:7398706
    DOI: 10.1155/2021/7398706
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