Design of Enhanced Adaptive Filter for Integrated Navigation System of FOG-SINS and Star Tracker
Fiber optics gyroscope in the strapdown inertial navigation system (FOG-SINS) suffers from precision degradation due to the influence of random errors. In this work, an enhanced Allan variance (AV) stochastic modeling method combined with discrete wavelet transform (DWT) for signal denoising is impl...
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Published in | 2022 IEEE 9th International Workshop on Metrology for AeroSpace (MetroAeroSpace) pp. 418 - 423 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
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27.06.2022
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Abstract | Fiber optics gyroscope in the strapdown inertial navigation system (FOG-SINS) suffers from precision degradation due to the influence of random errors. In this work, an enhanced Allan variance (AV) stochastic modeling method combined with discrete wavelet transform (DWT) for signal denoising is implemented to estimate the random process in the FOG signal. Furthermore, we devise a measurement-based iterative adaptive Sage-Husa nonlinear filter with augmented states to integrate a star tracker sensor with SINS. The proposed filter adapts the measurement noise covariance matrix based on the available data. Moreover, the enhanced stochastic modeling scheme is invested in tuning the process noise covariance matrix and the augmented state Gauss-Markov process parameters. Finally, the effectiveness of the proposed filter is investigated employing the collected data in laboratory conditions. The result shows the filter's improved accuracy in comparison with the conventional Kalman filter (CKF). |
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AbstractList | Fiber optics gyroscope in the strapdown inertial navigation system (FOG-SINS) suffers from precision degradation due to the influence of random errors. In this work, an enhanced Allan variance (AV) stochastic modeling method combined with discrete wavelet transform (DWT) for signal denoising is implemented to estimate the random process in the FOG signal. Furthermore, we devise a measurement-based iterative adaptive Sage-Husa nonlinear filter with augmented states to integrate a star tracker sensor with SINS. The proposed filter adapts the measurement noise covariance matrix based on the available data. Moreover, the enhanced stochastic modeling scheme is invested in tuning the process noise covariance matrix and the augmented state Gauss-Markov process parameters. Finally, the effectiveness of the proposed filter is investigated employing the collected data in laboratory conditions. The result shows the filter's improved accuracy in comparison with the conventional Kalman filter (CKF). |
Author | Bessaad, Nassim Bao, Qilian Jiangkang, Zhao |
Author_xml | – sequence: 1 givenname: Nassim surname: Bessaad fullname: Bessaad, Nassim email: bessaad_nassim@sjtu.edu.cn organization: Shanghai Jiao Tong University,School of Electronic Information and Electrical Engineering,Shanghai,China,200240 – sequence: 2 givenname: Qilian surname: Bao fullname: Bao, Qilian email: qlbao@sjtu.edu.cn organization: Shanghai Jiao Tong University,School of Electronic Information and Electrical Engineering,Shanghai,China,200240 – sequence: 3 givenname: Zhao surname: Jiangkang fullname: Jiangkang, Zhao email: zhaojiankang@sjtu.edu.cn organization: Shanghai Jiao Tong University,School of Electronic Information and Electrical Engineering,Shanghai,China,200240 |
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Snippet | Fiber optics gyroscope in the strapdown inertial navigation system (FOG-SINS) suffers from precision degradation due to the influence of random errors. In this... |
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StartPage | 418 |
SubjectTerms | Adaptation models adaptive filtering Adaptive filters Discrete wavelet transforms Filtering algorithms FOG Inertial Navigation Noise measurement star tracker Stars Stochastic processes |
Title | Design of Enhanced Adaptive Filter for Integrated Navigation System of FOG-SINS and Star Tracker |
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