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Error Analysis and Compensation of Gyrocompass Alignment for SINS on Moving Base

Author

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  • Bo Xu
  • Yang Liu
  • Wei Shan
  • Yi Zhang
  • Guochen Wang

Abstract

An improved method of gyrocompass alignment for strap-down inertial navigation system (SINS) on moving base assisted with Doppler velocity log (DVL) is proposed in this paper. After analyzing the classical gyrocompass alignment principle on static base, implementation of compass alignment on moving base is given in detail. Furthermore, based on analysis of velocity error, latitude error, and acceleration error on moving base, two improvements are introduced to ensure alignment accuracy and speed: (1) the system parameters are redesigned to decrease the acceleration interference and (2) a data repeated calculation algorithm is used in order to shorten the prolonged alignment time caused by changes in parameters. Simulation and test results indicate that the improved method can realize the alignment on moving base quickly and effectively.

Suggested Citation

  • Bo Xu & Yang Liu & Wei Shan & Yi Zhang & Guochen Wang, 2014. "Error Analysis and Compensation of Gyrocompass Alignment for SINS on Moving Base," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-18, June.
    • Handle: RePEc:hin:jnlmpe:373575
    DOI: 10.1155/2014/373575
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