Integrated optimization of underwater acoustic ship-radiated noise recognition based on two-dimensional feature fusion
Sign Up to like & getrecommendations! Published in 2020 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2019.107057
Abstract: Abstract 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. By considering the features extracted from the… read more here.
Keywords: recognition; ship radiated; radiated noise; feature fusion ... See more keywords
Measurement of underwater target radiated noise based on nested biconical array
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2020.107801
Abstract: Abstract In order to measure the radiated noise of underwater low-noise targets, it is often necessary to measure the radiated noise in the near-field condition, and the array must have a certain spatial directivity to… read more here.
Keywords: array; target radiated; biconical array; underwater target ... See more keywords
Effect of biofouling roughness on a marine propeller's performance including cavitation and underwater radiated noise (URN)
Sign Up to like & getrecommendations! Published in 2021 at "Applied Ocean Research"
DOI: 10.1016/j.apor.2020.102491
Abstract: Abstract This study aims to investigate the effects of biofouling-related roughness on a propeller's hydrodynamic and underwater radiated noise (URN) performance. Selected benchmark INSEAN E779A propeller operated in uniform & open water flow under non-cavitating… read more here.
Keywords: propeller; performance; underwater radiated; roughness ... See more keywords
A comparative study of four nonlinear dynamic methods and their applications in classification of ship-radiated noise
Sign Up to like & getrecommendations! Published in 2020 at "Defence Technology"
DOI: 10.1016/j.dt.2020.11.011
Abstract: Abstract Refined composite multi-scale dispersion entropy (RCMDE), as a new and effective nonlinear dynamic method, has been applied in the field of medical diagnosis and fault diagnosis. In this paper, we first introduce RCMDE into… read more here.
Keywords: classification; knn; multi scale; ship radiated ... See more keywords
Research on Feature Extraction of Ship-Radiated Noise Based on Compressed Sensing and Center Frequency
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DOI: 10.1109/access.2021.3113042
Abstract: In the field of underwater acoustic signal processing, the ship radiated noise contains a large amount of ship information, which is of great significance to the ship identification. The traditional method relies too much on… read more here.
Keywords: ship; ship radiated; feature extraction; center frequency ... See more keywords
Retrofit-induced changes in the radiated noise and monopole source levels of container ships
Sign Up to like & getrecommendations! Published in 2023 at "PLOS ONE"
DOI: 10.1371/journal.pone.0282677
Abstract: The container shipping line Maersk undertook a Radical Retrofit to improve the energy efficiency of twelve sister container ships. Noise reduction, identified as a potential added benefit of the retrofitting effort, was investigated in this… read more here.
Keywords: radiated noise; container ships; source levels; monopole source ... See more keywords
Feature Extraction of Ship-Radiated Noise Based on Intrinsic Time-Scale Decomposition and a Statistical Complexity Measure
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DOI: 10.3390/e21111079
Abstract: Extracting effective features from ship-radiated noise is an important way to improve the detection and recognition performance of passive sonar. Complexity features of ship-radiated noise have attracted increasing amounts of attention. However, the traditional definition… read more here.
Keywords: statistical complexity; complexity; time; complexity measure ... See more keywords
Segmentation Method for Ship-Radiated Noise Using the Generalized Likelihood Ratio Test on an Ordinal Pattern Distribution
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DOI: 10.3390/e22040374
Abstract: Due to the diversity of ship-radiated noise (SRN), audio segmentation is an essential procedure in the ship statuses/categories identification. However, the existing segmentation methods are not suitable for the SRN because of the lack of… read more here.
Keywords: segmentation; method; ship radiated; radiated noise ... See more keywords
Visualization of Underwater Radiated Noise in the Near- and Far-Field of A Propeller-Hull Configuration Using CFD Simulation Results
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Marine Science and Engineering"
DOI: 10.3390/jmse11040834
Abstract: Underwater radiated noise is part of the anthropogenic emissions into the environment and as such a pressing problem for the preservation of the marine ecosystem. In order to direct attention to the most relevant noise… read more here.
Keywords: hull; radiated noise; cfd simulation; underwater radiated ... See more keywords
A Semi-Empirical Prediction Method for Broadband Hull-Pressure Fluctuations and Underwater Radiated Noise by Propeller Tip Vortex Cavitation †
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Marine Science and Engineering"
DOI: 10.3390/jmse6020049
Abstract: A semi-empirical method is presented that predicts broadband hull-pressure fluctuations and underwater radiated noise due to propeller tip vortex cavitation. The method uses a hump-shaped pattern for the spectrum and predicts the centre frequency and… read more here.
Keywords: semi empirical; vortex; hull pressure; method ... See more keywords