Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (11): 3278-3287.doi: 10.12305/j.issn.1001-506X.2021.11.28

• Guidance, Navigation and Control • Previous Articles     Next Articles

Maximum correntropy Kalman filter used for hull deformation measurement in non-Gaussian environment

Zixuan LONG1, Qi ZHOU2, Xiafu PENG1, Xiaoli ZHANG1,*   

  1. 1. School of Aerospace Engineering, Xiamen University, Xiamen 361101, China
    2. AVIC Xi'an Flight Automatic Control Research Institute, Xi'an 710076, China
  • Received:2021-01-29 Online:2021-11-01 Published:2021-11-12
  • Contact: Xiaoli ZHANG

Abstract:

In the process of hull deformation measurement based on inertial matching method, the conventional Kalman filter possibly causes a greater deviation or even divergence of filtering when the fiber gyroscope unit (FGU) is being exposed to a certain external environment under complex sea conditions. To solve this problem, this paper introduces a maximum correntropy criterion Kalman filter (MCCKF) used for environment under model-unknown or non-Gaussian noises based on weighted matrix, into which both the maximum correntropy criterion (MCC) and weighted least squares (WLS) are introduced to improve its iterative process. Finally, a series of comparative experiments based on angular velocity matching method are carried out. Compared with adaptive and traditional MCC Kalman filter (MCCKF) avoids timely modifying parameters and achieves more precise estimation of deformation, meets the requirements of rapid convergence, as well as stronger robustness of resisting complex disturbance.

Key words: hull deformation measurement, Kalman filter, non-Gaussian, maximum correntropy criterion (MCC), weighted least squares (WLS)

CLC Number: 

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