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A study on the acoustical inversion method using cepstrum analysis of underwater ship radiated noise

Authors
Park, C.Kim, G.D.Yim, G.Moon, I.-S.
Issue Date
2019
Publisher
Acoustical Society of Korea
Keywords
Acoustic inversion; Cepstrum analysis; Noise source localization; Underwater ship radiated noise
Citation
Journal of the Acoustical Society of Korea, v.38, no.1, pp 73 - 81
Pages
9
Journal Title
Journal of the Acoustical Society of Korea
Volume
38
Number
1
Start Page
73
End Page
81
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/433
DOI
10.7776/ASK.2019.38.1.073
ISSN
1225-4428
2287-3775
Abstract
This paper proposes an acoustical inversion method using cepstrum analysis of underwater ship noise. Through the cepstrum analysis, multipath structure can be extracted from the recorded ship noise. The multipath structure comes from interferences between a direct arrival and multiple reflections from the sea surface and the bottom. The acoustic inversion is the optimization process to find the best parameters which show good correlation between cepstrums of the measured signal and the replica. The inversion method was applied to the underwater ship radiated noise data measured at Straits of Korea in order to estimate the acoustic center of the ship and the hydrophone position. The inversion results showed good agreement with the measured information. ? 2019 Acoustical Society of Korea. All rights reserved.
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Kim, Gun Do
지능형선박연구본부 (함정공학연구센터)
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