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Volume 38 Issue 6
Jun.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  38(6): 741-744,749.
Wang Yankui, Deng Xueying, . Experimental Investigation on Effect of Horizontal Tail Deflectionon Aerodynamic Characteristics of Aircraft under Vectoring Jet[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(2): 156-160. (in Chinese)
Citation: Cui Guilei, Tang Yonghua. Rocket fault feature extraction based on time-frequency analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(6): 741-744,749. (in Chinese)
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Rocket fault feature extraction based on time-frequency analysis

  • State Key Laboratory of Astronautic Dynamics, Xian 710043, China

  • Received Date: 10 Mar 2011
  • Publish Date: 30 Jun 2012
    Abstract
  • To obtain more valuable information from rocket flight test data as much as possible, a fault feature extraction model was proposed to the need of rocket vibration analysis. 3D Fourier spectrum was constucted to analyze the time-varying trend of entire observation signal efficiently. Standard and fast algorithm of Wigner-Ville distribution was studied to describe the frequency spectrum of interesting data segments accurately. The model and methods were illustrated on rocket telemetry data. The results prove the model-s direct-vision, high efficiency, and accuracy. It-s of great significance for designing a rocket with high reliability and performance to analyze the flight test data more deeply, based on time-frequency analysis methods.

     

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