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Volume 27 Issue 2
Jul.  2022
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DAI Yanzhong, LI Zhishun. Instantaneous Doppler estimation of wideband echoes based on Wigner-Ville distribution[J]. ACTA ACUSTICA, 2002, 27(2): 137-140. DOI: 10.15949/j.cnki.0371-0025.2002.02.009
Citation: DAI Yanzhong, LI Zhishun. Instantaneous Doppler estimation of wideband echoes based on Wigner-Ville distribution[J]. ACTA ACUSTICA, 2002, 27(2): 137-140. DOI: 10.15949/j.cnki.0371-0025.2002.02.009
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Instantaneous Doppler estimation of wideband echoes based on Wigner-Ville distribution

  • College of Marine Engineering, Northwestern Polytechmical University Xi'an 710072

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  • PACS: 
    • 43.35  (Ultrasonics, quantum acoustics, and physical effects of sound)
  • Received Date: July 09, 2000
  • Revised Date: December 10, 2000
  • Available Online: July 31, 2022
    Graphical Abstract
    • Abstract
  • Two instantaneous Doppler estimation methods of wideband echoes based on Wigner-Ville Distribution (RND), a typical Time-Frequency Analysis method, are presented. It is proved in theory that the WVD-based timefrequency correlation estimation method is identical to the estimation method based on the matched filter for a known signal. And also、a new estimation method, XWVD peak estimation method, is presented. Computer simulation shows that the XWVD peak estimation method has a lower SNR threshold compared with the former one. And the computation of this method is also reduced in order to be implemented in real time.
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