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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2004  >  4(2): 33-35
JIANG Shu-xia, FU Qin-yi, WEN Zhen-hua. Application of wavelet transform to obtain track static power spectrum density[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 33-35.
Citation: JIANG Shu-xia, FU Qin-yi, WEN Zhen-hua. Application of wavelet transform to obtain track static power spectrum density[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 33-35.
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Application of wavelet transform to obtain track static power spectrum density

  • 1.

    School of Industry, Central South Forestry University, Changsha 410007, China

  • 2.

    School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China

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  • Author Bio:

    JIANG Shu-xia(1977-), female, graduate student, 86-13677397551, jiangshuxia_2002@163.com

  • Received Date: 2004-01-01
  • Publish Date: 2004-06-25
    Abstract
  • Track irregularity and its static power spectrum density were decomposed into different frequency-bands with wavelet transform. Combined with processing skill of wavelet threshold value, high-frequency coefficients of wavelet were quantified, then data were reconstructed, and some interferons and noises in certain frequency-band were removed, which realized denoise and smoothing of power spectrum density. The results indicate that data processing approach based on wavelet transform can increase noise-signal ration of track static parameters, and improve visibility of track static power spectrum density.

     

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