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Improved ICCP Algorithm Considering Scale Error for Underwater Geomagnetic Aided Inertial Navigation

Author

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  • Hongmei Zhang
  • Le Yang
  • Minglong Li

Abstract

The iterative closest contour point (ICCP) matching algorithm has become more and more widely used in the underwater geomagnetic aided inertial navigation system (INS). In practical application, the traditional ICCP algorithm is sensitive to the initial positioning error of the INS and can only do rigid transformation for the INS track of the vehicle. Particularly when there exists scale error, the accuracy and stability of the traditional ICCP algorithm will be affected. To solve this problem, an improved algorithm based on affine transformation is proposed. Firstly, the fundamental of the ICCP is analyzed in detail, and an error analysis of the geomagnetic aided inertial navigation system is carried out, and then the rigid transformation is replaced with affine transformation to improve the performance of the ICCP. In contrast to the conventional approach, the proposed algorithm can solve the rotation, translation, and scaling parameters of the indicated track and the matching track, so it can significantly reduce the interference of the scale error. Experimental results confirm the effectiveness of the proposed algorithm.

Suggested Citation

  • Hongmei Zhang & Le Yang & Minglong Li, 2019. "Improved ICCP Algorithm Considering Scale Error for Underwater Geomagnetic Aided Inertial Navigation," Mathematical Problems in Engineering, Hindawi, vol. 2019, pages 1-9, April.
    • Handle: RePEc:hin:jnlmpe:1527940
    DOI: 10.1155/2019/1527940
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