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GONG Jing, WU Bo, WAN Jiashuo, ZHAO Qinghu, CHENG Jiahao. Research on the precision of pulse coherent velocimetry based on WDR combined FFT method[J]. LASER TECHNOLOGY, 2023, 47(1): 92-97. DOI: 10.7510/jgjs.issn.1001-3806.2023.01.014
Citation: GONG Jing, WU Bo, WAN Jiashuo, ZHAO Qinghu, CHENG Jiahao. Research on the precision of pulse coherent velocimetry based on WDR combined FFT method[J]. LASER TECHNOLOGY, 2023, 47(1): 92-97. DOI: 10.7510/jgjs.issn.1001-3806.2023.01.014
shu

Research on the precision of pulse coherent velocimetry based on WDR combined FFT method

  • 1.

    College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China

  • 2.

    Key Open Laboratory of Atmospheric Sounding, China Meteorological Administration, Chengdu 610225, China

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  • Received Date: January 23, 2022
  • Revised Date: February 24, 2022
  • Published Date: January 24, 2023
    Graphical Abstract
    • Abstract
  • In order to improve the accuracy of long-distance speed measurement, a signal processing method based on wavelet decomposition reconstruction (WDR) combined with fast Fourier transform (FFT) was adopt in this paper. Theoretical analysis and experimental verification were carried out, and the pulse coherent velocimetry data of hard targets at different speeds were obtained. The results show that the targets with a velocity change of 0.02 m/s can be accurately resolved by using the WDR & FFT method. This research provides a reference for the high-resolution velocity measurement of long-distance and low-velocity targets.
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    • References (30)
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