• ISSN 0258-2724
  • CN 51-1277/U
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Volume 15 Issue 2
Apr.  2002
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Article Contents
CHEN Chun-jun, XIAO Heng. Research and Application of Wigner-VilleDistribution Algorithm[J]. Journal of Southwest Jiaotong University, 2002, 15(2): 146-149.
Citation: CHEN Chun-jun, XIAO Heng. Research and Application of Wigner-Ville Distribution Algorithm[J]. Journal of Southwest Jiaotong University, 2002, 15(2): 146-149.

Research and Application of Wigner-Ville Distribution Algorithm

  • Publish Date: 25 Apr 2002
  • An algorithm using FFT to calculate Wignev-Ville Distribution (WVD) is introduced. In view of the complexity of time frequency distribution numerical calculation of Wigner-Ville quadratic function, and the large amount of calculation by the algorithm, a sampling algorithm is put forward, by which the length of data that can be handled gets increased in the condition of not changing the sampling frequency. Or, when dealing with the same data length, the calculation time is shortened greatly. The algorithm is applied to analyze the time frequency distributions of a simulated time varying sinusoidal signal and of the fast changing noise signal produced by closing a steel window, and satisfactory results are obtained.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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