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ZHAO Hongbo, ZHANG Da, YANG Jiankun, MENG Fancui, ZHANG Ming. Application of wavelet layered method for laser Doppler velocimetry signal[J]. LASER TECHNOLOGY, 2019, 43(1): 103-108. DOI: 10.7510/jgjs.issn.1001-3806.2019.01.021
Citation: ZHAO Hongbo, ZHANG Da, YANG Jiankun, MENG Fancui, ZHANG Ming. Application of wavelet layered method for laser Doppler velocimetry signal[J]. LASER TECHNOLOGY, 2019, 43(1): 103-108. DOI: 10.7510/jgjs.issn.1001-3806.2019.01.021
shu

Application of wavelet layered method for laser Doppler velocimetry signal

  • 1.

    Mechanical and Electrical Engineering College, Qingdao University of Science and Technology, Qingdao 266061, China

  • 2.

    Automation and Eleetrical Engineering College, Qingdao University of Science and Technology, Qingdao 266061, China

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  • Received Date: March 14, 2018
  • Revised Date: May 08, 2018
  • Published Date: January 24, 2019
    Graphical Abstract
    • Abstract
  • In order to reduce the noise in laser Doppler velocimetry signal, the method that Gaussian white noise was added to the simulated laser Doppler velocimetry signal was used. The high frequency coefficient zeroing method and the wavelet threshold denoising method were adopted for denoising after wavelet layering. The simulation analysis and experimental verification were carried out. The results show that, the high frequency coefficient zeroing method after wavelet layering can improve the signal-to-noise rate to get smooth graph signals and achieve an ideal denoising effect. The result is helpful to improve the accuracy of signal detection in laser Doppler velocimetry system.
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    • References (22)
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