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中文核心期刊

Volume 48 Issue 5
Sep.  2023
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LI Xuegang, JIANG Guoqing, SUN Guocang, HUA Runan, ZHU Jie. Radiated noise measurement method of underwater low noise target by a vertical nested array[J]. ACTA ACUSTICA, 2023, 48(5): 971-977. DOI: 10.12395/0371-0025.2022187
Citation: LI Xuegang, JIANG Guoqing, SUN Guocang, HUA Runan, ZHU Jie. Radiated noise measurement method of underwater low noise target by a vertical nested array[J]. ACTA ACUSTICA, 2023, 48(5): 971-977. DOI: 10.12395/0371-0025.2022187
shu

Radiated noise measurement method of underwater low noise target by a vertical nested array

  • 1.

    Wuhan Second Ship Design and Research Institute　Wuhan　430205

  • 2.

    School of Marine Science and Technology, Northwestern Polytechnical University　Xi’an　710072

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  • PACS: 
    • 43.30  (Underwater sound)
  • Received Date: December 26, 2022
  • Revised Date: April 30, 2023
  • Available Online: September 11, 2023
    Graphical Abstract
    • Abstract

  • A radiated noise measurement method of underwater acoustic targets with relatively low power by a vertical nested array is studied. Firstly, the array gain requirements for different frequency bands are obtained through comparative analysis of the background noise level and the radiated noise level of the target. Secondly, an ultra wideband constant-beamwidth beamforming method with high robustness is established for the waveguide environment based on convex optimization. The radiated noise measurement and the following spatial array signal processing procedure is formulated. Finally, a vertical nested array measurement system is developed, and the radiated noise measurement method is verified using lake test data. Experimental results show that the radiated noise measurement method has large working bandwidth, high robustness and low measurement uncertainty of about 2 dB.

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    • References (13)
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