The influences and modification on the fidelity of vessel radiated noise power spectrum by main-beam width of measurement array

Wang Yang; Guijuan Li; Yansen Liu

doi:10.1117/12.2559663

31 December 2019 The influences and modification on the fidelity of vessel radiated noise power spectrum by main-beam width of measurement array

Wang Yang, Guijuan Li, Yansen Liu

Author Affiliations +

Proceedings Volume 11384, Eleventh International Conference on Signal Processing Systems; 1138407 (2019) https://doi.org/10.1117/12.2559663
Event: Eleventh International Conference on Signal Processing Systems, 2019, Chengdu, China

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.

Citation Download Citation

Wang Yang, Guijuan Li, and Yansen Liu "The influences and modification on the fidelity of vessel radiated noise power spectrum by main-beam width of measurement array", Proc. SPIE 11384, Eleventh International Conference on Signal Processing Systems, 1138407 (31 December 2019); https://doi.org/10.1117/12.2559663

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