Research on characteristics of radiated noise of large cargo ship in shallow water

Yongdong Liu; Liang Zhang

doi:10.1117/12.2265479

23 January 2017 Research on characteristics of radiated noise of large cargo ship in shallow water

Yongdong Liu, Liang Zhang

Proceedings Volume 10322, Seventh International Conference on Electronics and Information Engineering; 103223D (2017) https://doi.org/10.1117/12.2265479
Event: Seventh International Conference on Electronics and Information Engineering, 2016, Nanjing, China

Abstract

With the rapid development of the shipping industry, the number of the world’s ship is gradually increasing. The characteristics of the radiated noise of the ship are also of concern. Since the noise source characteristics of multichannel interference, the surface wave and the sea temperature microstructure and other reasons, the sound signal received in the time-frequency domain has varying characteristics. The signal of the radiated noise of the large cargo ship JOCHOH from horizontal hydrophone array in some shallow water of China is processed and analyzed in the summer of 2015, and the results show that a large cargo ship JOCHOH has a number of noise sources in the direction of the ship’s bow and stern lines, such as host, auxiliary and propellers. The radiating sound waves generated by these sources do not meet the spherical wave law at lower frequency in the ocean, and its radiated noise has inherent spatial distribution, the variation characteristics of the radiated noise the large cargo ship in time and frequency domain are given. The research method and results are of particular importance.

Citation Download Citation

Yongdong Liu and Liang Zhang "Research on characteristics of radiated noise of large cargo ship in shallow water", Proc. SPIE 10322, Seventh International Conference on Electronics and Information Engineering, 103223D (23 January 2017); https://doi.org/10.1117/12.2265479

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