منابع مشابه
Noise reduction of ship-radiated noise based on noise-assisted bivariate empirical mode decomposition
Underwater acoustic signal has the non-linear and non-stationary characteristics. Aiming at the issue on noise reduction of underwater acoustic signal, an adaptive noise reduction method of ship-radiated noise based on noiseassisted bivariate empirical mode decomposition is proposed. Firstly, a two-dimensional complex data is built by using one-dimensional real signal and adding Gaussian white ...
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^ The authors of this paper retain the right of subsequent publication, subject to the sanction of the Committee of Lloyd's Register. Any opinions expressed and statements made in this paper and in the subsequent discussions are those of the individuals and not those of Lloyd's Register. permitted under current legislation no part of this work may be photocopied, stored in a retrieval system, p...
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Abstract In a coastal area, all of the vessels are always exposed to the potential risk, taking into the maritime accident statistics account over the last decades. To manage vessels underway safety, the characteristics of ship movements in a fairway should be recognized by VTS system or VTS operators. The IMO has already mandated the shipboard carriage of AIS since 2004, as stated in SOLAS Cha...
متن کاملShip Radiated Noise Modulation Feature Extraction Based on CEEMD and Wavelet Threshold Noise Reduction
Ship propeller beats have obvious amplitude modulation to the cavitation noise of its radiation. The DEMON (Detection of Envelope Modulation on Noise) spectrum analysis technology is to demodulate the high frequency components to get the low frequency modulation components. This paper studied the new method to combine the complementary ensemble empirical mode decomposition (CEEMD) with wavelet ...
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ژورنال
عنوان ژورنال: Journal of Zosen Kiokai
سال: 1965
ISSN: 1884-2062
DOI: 10.2534/jjasnaoe1952.1965.316