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Volume 28 Issue 4
Apr.  2002
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Journal of Beijing University of Aeronautics and Astronautics  > 2002  >  28(4): 477-480.
WENG Hai-na, FANG Jian-cheng, YANG Gong-liu, et al. Fault Diagnosis for Navigational Sensors Based on Modulated Gaussian Wavelet Transformation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(4): 477-480. (in Chinese)
Citation: WENG Hai-na, FANG Jian-cheng, YANG Gong-liu, et al. Fault Diagnosis for Navigational Sensors Based on Modulated Gaussian Wavelet Transformation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2002, 28(4): 477-480. (in Chinese)
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Fault Diagnosis for Navigational Sensors Based on Modulated Gaussian Wavelet Transformation

  • 1.

    Beijing University of Aeronautics and Astronautics, School of Astronautics

  • 2. Tsinghua University, Dept. of Precision Instruments

  • Received Date: 24 Dec 2001
  • Publish Date: 30 Apr 2002
    Abstract
  • In order to improve the online fault-detecting capability of multi-sensor integrated navigation system, a MGWT-based fault diagnosis algorithm for navigation sensors was presented based on analysis of characteristics of modulated Gaussian wavelet (MGW). With this method, the effectiveness of each sensor can be directly detected by using the observing variables of the sensors. Some soft faults (such as the anomaly of covariance) can be detected online. Simulation result proved the effectiveness of this method.

     

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  • [1] Daubechies I The wavelet transform, time-frequency localization and signal analysis[J] IEEE Transactions on Information Theory, 1990,36(5):961~970. [2]Daubechies I. Ten lectures on wavelets [M]. Montpelier:Capital City Press, 1992. [3]张 河,张 庆. 调频高斯小波变换及其程序[J]. 信号处理,1997,13(3):221~226.
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