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中文核心期刊

Volume 49 Issue 5
Sep.  2024
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WANG Ran, WANG Guangzhe, ZHANG Chenyu, GUO Qixin, ZHANG Yongli, YU Liang, GAO Yuan, CHEN Nuo. Gaussian mixture model fitting and suppression of towed array flow noise[J]. ACTA ACUSTICA, 2024, 49(5): 1030-1040. DOI: 10.12395/0371-0025.2023033
Citation: WANG Ran, WANG Guangzhe, ZHANG Chenyu, GUO Qixin, ZHANG Yongli, YU Liang, GAO Yuan, CHEN Nuo. Gaussian mixture model fitting and suppression of towed array flow noise[J]. ACTA ACUSTICA, 2024, 49(5): 1030-1040. DOI: 10.12395/0371-0025.2023033
shu

Gaussian mixture model fitting and suppression of towed array flow noise

  • 1.

    School of Logistics Engineering, Shanghai Maritime University　Shanghai　201306

  • 2.

    College of Power and Energy Engineering, Harbin Engineering University　Harbin　150006

  • 3.

    College of Electronic and Information Engineering, Tongji University　Shanghai　201804

  • 4.

    School of Civil Aviation, Northwestern Polytechnical University　Xi’an　710072

  • 5.

    Shanghai Marine Electronic Equipment Research Institute　Shanghai　201108

  • 6.

    Science and Technology on Underwater Acoustics Antagonizing Laboratory　Shanghai　201108

More Information
  • PACS: 
      43.60,43.30,43.50
  • Received Date: February 28, 2023
  • Revised Date: May 25, 2023
    Graphical Abstract
    • Abstract

  • Aiming at the problem that it is difficult to accurately model and suppress the towed array flow noise caused by the pressure fluctuation in the turbulent boundary layer, this paper analyzes the generation mechanism of the towed array flow noise and the statistical properties of the noise. A hybrid Gaussian model modelling method is developed for the non-Gaussian distributed towed array flow noise, and a low-rank model of the acoustic source signal in the multi-channel towed array is established. The parameters in the model of the flow noise and the acoustic source signal are solved by the expectation-maximization algorithm, which ultimately realizes the separation of the flow noise and acoustic source signal in the received signal of the hydrophone. The results of the flow noise suppression and target orientation estimation of the actual lake test data show that the maximum side-valve level suppression reaches 8−10 dB without affecting the localization results.

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    • References (27)
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