Multi-Stage Feature Extraction and Classification for Ship-Radiated Noise
Sensors, 2021 Due to the complexity and unique features of the hydroacoustic channel, ship-radiated noise (SRN) detected using a passive sonar tends mostly to distort. SRN feature extraction has been proposed to improve the detected passive sonar signal. Unfortunately, the current methods used in SRN feature extraction have many shortcomings.
Hamada Esmaiel +5 more
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Ship Radiated Noise Recognition Technology Based on ML‐DS Decision Fusion [PDF]
Computational Intelligence and Neuroscience, 2021 Ship radiated noise is an important information source of underwater acoustic targets, and it is of great significance to the identification and classification of ship targets. However, there are a lot of interference noises in the water, which leads to the reduction of the model recognition rate.
Biao Wang 0002 +5 more
openaire +2 more sources
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 +30 more
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Nonlinear disturbance evolution in a two-dimensional boundary layer along an elastic plate and induced radiated sound [PDF]
, 2010 The interaction between a boundary-layer flow and an elastic plate is addressed by direct numerical simulation, taking into account the full coupling between the fluid flow and the flexible wall.
EHRENSTEIN, Uwe +5 more
core +1 more source
Mimicking Ship-Radiated Noise With Chaos Signal for Covert Underwater Acoustic Communication
IEEE Access, 2020 With the increasingly fierce competition for marine resources, underwater acoustic communication as the main form of underwater communication, its security has received more and more attention. The traditional underwater acoustic communication technology
Shuhua Huang +5 more
doaj +1 more source
Underwater Sound Characteristics of a Ship with Controllable Pitch Propeller
Journal of Marine Science and Engineering, 2022 The time-dependent spectral characteristics of underwater sound radiated by an ocean vessel has complex dependencies on ship machinery, propeller dynamics, hydrodynamics of ship exhaust and motion, as well as ship board activities.
Chenyang Zhu +3 more
doaj +1 more source
Zhongguo Jianchuan Yanjiu, 2020 [Objectives] The radiated noise caused by propeller-induced pressure fluctuations of SWATH ship is studied.[Methods] Due to the difference between the common load application ways and the actual situation,as well as the interaction between the two ...
LIU Zhe, WU Shuai, LI Guang
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Ship Shaft Frequency Extraction Based on Improved Stacked Sparse Denoising Auto-Encoder Network
Applied Sciences, 2022 The modulation spectrum of ship radiated noise contains information on shaft frequency, which is an important feature used to identify ships and a key parameter involved in calculating the number of propeller blades.
Junshuai Ni +4 more
doaj +1 more source
Ten challenges in measuring and reporting ship noise levels [PDF]
JASA Express Letters, 2022 In 2000, the authors published an article by Arveson and Vendittis [JASA 107, 118–129 (2000)] that described measurements of the radiated noise of a cargo ship measured by the U.S. Navy.
David J. Vendittis, Paul T. Arveson
doaj +1 more source
Integrated optimization of underwater acoustic ship-radiated noise recognition based on two-dimensional feature fusion [PDF]
, 2019 (#br)Feature fusion methods are introduced to ship-radiated noise recognition in this paper. Wavelet packet (WP) decomposition is used to decompose the ship-radiated noise into multiple different subbands.
Xiaoquan Ke, En Cheng, Fei Yuan
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