Results 31 to 40 of about 569 (176)
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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Research on Feature Extraction of Ship-Radiated Noise Based on Multiscale Fuzzy Dispersion Entropy
Journal of Marine Science and Engineering, 2023 In recent years, fuzzy dispersion entropy (FDE) has been proposed and used in the feature extraction of various types of signals. However, FDE can only analyze a signal from a single time scale during practical application and ignores some important ...
Yuxing Li +3 more
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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
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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
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Using Feature Extraction to Perform Equipment Health Monitoring on Ship-Radiated Noise
Acoustics, 2023 The current state of the art in hydroacoustics research employs a variety of feature extraction techniques with the goal of accurately classifying a ship based on its radiated noise. These techniques are capable of accuracy in excess of 95%.
Nicholas Marasco +2 more
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Underwater Acoustic Target Recognition Based on Attention Residual Network
Entropy, 2022 Underwater acoustic target recognition is very complex due to the lack of labeled data sets, the complexity of the marine environment, and the interference of background noise.
Juan Li +4 more
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A Two‐Stage Characterization Pipeline and Open‐Source Framework for Reproducible Tactile Sensing
Advanced Intelligent Systems, EarlyView.The same soft tactile sensor returns different numbers when embodied in different robots. This is an Embodiment Gap that no shared framework currently captures transparently. A two‐stage characterization pipeline, paired with a FAIR open‐source digital datasheet, decouples intrinsic sensor behavior from embodiment effects and condenses cross‐laboratory
Matteo Lo Preti +6 more
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Data augmentation and deep neural network classification based on ship radiated noise
Frontiers in Marine Science, 2023 IntroductionVarious types of ships sail at sea, and identifying maritime ship types through shipradiated noise is one of the tasks of ocean observation.
Zhuofan Xie +10 more
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The Anatomical Record, EarlyView.Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
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Entropy, 2016 In order to solve the problem of feature extraction of underwater acoustic signals in complex ocean environment, a new method for feature extraction from ship-radiated noise is presented based on empirical mode decomposition theory and permutation ...
Yu-Xing Li +3 more
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