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The influences and modification on the fidelity of vessel radiated noise power spectrum by main-beam width of measurement array
Author(s): Wang Yang; Guijuan Li; Yansen Liu
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Paper Abstract

In the question of the impact of the main-beam width on vessel radiated noise power spectrum characteristics, a typical mathematical model was established, the influence of the main-beam covering vessel and its trajectory on the acquisition of vessel radiation noise power spectrum characteristics is studied. Theoretical and simulation results show that when main-beam cannot cover the vessel and its trajectory, the method of multi-beam synthesis should be apply in order to undistorted acquire the vessel radiation noise power spectrum characteristic. A cargo-ship radiated noise characteristics is acquired based on the method of multi-beam synthesis in this paper, the difference of broadband sound pressure level acquired by beamforming and single hydrophone is less than 1.8dB. The research results can provide a basis and example for the effective acquisition of vessel radiated noise characteristics based on acoustic measurement array.

Paper Details

Date Published: 31 December 2019
PDF: 8 pages
Proc. SPIE 11384, Eleventh International Conference on Signal Processing Systems, 1138407 (31 December 2019); doi: 10.1117/12.2559663
Show Author Affiliations
Wang Yang, Science and Technology on Underwater Test and Control Lab. (China)
Guijuan Li, Science and Technology on Underwater Test and Control Lab. (China)
Yansen Liu, Science and Technology on Underwater Test and Control Lab. (China)


Published in SPIE Proceedings Vol. 11384:
Eleventh International Conference on Signal Processing Systems
Kezhi Mao, Editor(s)

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