Results 81 to 90 of about 1,335,366 (185)

Vibration and radiated noise of a small ship [PDF]

, 2008
Extensive measurements "in situ" both of the sound intensity and the vibration were made of M25, a small ship (length 8 m , beam 4 m, displacement 2 tons) powered by 20 kW a direct-drive low-speed diesel engine. A small ship creates a series of harmonics
Gloza, I.
core  

Vessel noise affects beaked whale behavior : results of a dedicated acoustic response study [PDF]

, 2012
© The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS ONE 7 (2012): e42535, doi:10.1371/journal.pone.0042535.Some beaked whale species are ...
Quick, Nicola, Di Marzio Nancy, Boyd, Ian L., Moretti David, Quick, Nicola Jane, Pirotta, Enrico, Peter Tyack, Moretti, David, Tyack, Peter L., Pirotta Enrico, DiMarzio, Nancy A., Enrico Pirotta, David Moretti, Tyack Peter, Milor, Rachel, Nancy Di Marzio, Boyd Ian, Milor Rachael, Quick Nicola, Nicola Quick, Hastie, Gordon, Ian Boyd, Tyack, Peter Lloyd, Boyd, Ian, Hastie Gordon, Milor, Rachael, Rachael Milor, Hastie, Gordon Drummond, Moretti, David J., Dimarzio, Nancy, Gordon Hastie, Hastie, Gordon Drummond; id_orcid, Tyack, Peter Lloyd; id_orcid   +32 more
core   +1 more source

High frequency ship radiated noise in shallow water [PDF]

, 1999
The stationary acoustic field in a two pIane parallel medium, sea surface and sea boftom, when a source near to the sea surface radiates, is characterized by the thickness of the medium and the reflectivity of the boundary surfaces.
Carbó, R., Molero, A. C.
core  

MTSA-Net: a multiscale time self-attention network for ship radiated self-noise reduction

International audienceThis study reformulates the issue of reducing ship radiated self-noise as a signal separation task involving two types of signals: the desired signal from a cooperative source and the self-noise from the towed ship.
Wang, Haibin, Tai, Yupeng, Benezeth, Yannick, Yang, Fan, Zhou, Lei, Li, Chao, Wang, Jun, Chu, Hailun   +7 more
core   +1 more source

Underwater acoustic target recognition under working conditions mismatch

Xibei Gongye Daxue Xuebao
The working conditions of the ship will have a great impact on the radiated noise of the ship. Even if the same ship is traveling in the same sea area, different working conditions will produce different radiated noise, thus affecting the accuracy of ...
WANG Haitao, JIN Anqi, YANG Shuang, ZENG Xiangyang   +3 more
doaj   +1 more source

Underwater radiated noise model of marine object

, 2020
The paper is devoted to the developing a comprehensive model for underwater radiated noise of marine object in order to model and simulate sonar systems.
Prokopovich, V V, Shafranyuk, A V
core   +1 more source

Optimized Ship-Radiated Noise Feature Extraction Approaches Based on CEEMDAN and Slope Entropy. [PDF]

Entropy (Basel), 2022
Li Y, Tang B, Jiao S.
europepmc   +1 more source

Underwater Acoustic Target Recognition Based on Sub-Regional Feature Enhancement and Multi-Activated Channel Aggregation

Journal of Marine Science and Engineering
Feature selection and fusion in ship radiated noise-based underwater target recognition have remained challenging tasks. This paper proposes a novel feature extraction method based on multi-dimensional feature selection and fusion. Redundant features are
Zhongxiang Zheng, Peng Liu
doaj   +1 more source

Double Feature Extraction Method of Ship-Radiated Noise Signal Based on Slope Entropy and Permutation Entropy. [PDF]

Entropy (Basel), 2021
Li Y, Gao P, Tang B, Yi Y, Zhang J.
europepmc   +1 more source

Optimized Variational Mode Decomposition and Permutation Entropy with Their Application in Feature Extraction of Ship-Radiated Noise. [PDF]

Entropy (Basel), 2021
Xie D, Hong S, Yao C.
europepmc   +1 more source