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Remote Sens. 2016, 8(3), 195;

Noise Localization Method for Model Tests in a Large Cavitation Tunnel Using a Hydrophone Array

Advanced Ship Research Division, Korea Research Institute of Ships & Ocean Engineering, Daejeon 34103, Korea
Department of Defense Systems Engineering, Sejong University, Seoul 143-747, Korea
Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul 151-744, Korea
Author to whom correspondence should be addressed.
Academic Editors: Nicholas Makris, Xiaofeng Li and Prasad S. Thenkabail
Received: 3 December 2015 / Revised: 21 January 2016 / Accepted: 24 February 2016 / Published: 27 February 2016
(This article belongs to the Special Issue Underwater Acoustic Remote Sensing)
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Model tests are performed in order to predict the noise level of a full ship and to control its noise signature. Localizing noise sources in the model test is therefore an important research subject along with measuring noise levels. In this paper, a noise localization method using a hydrophone array in a large cavitation tunnel is presented. The 45-channel hydrophone array was designed using a global optimization technique for noise measurement. A set of noise experiments was performed in the KRISO (Korea Research Institute of Ships & Ocean Engineering) large cavitation tunnel using scaled models, including a ship with a single propeller, a ship with twin propellers and an underwater vehicle. The incoherent broadband processors defined based on the Bartlett and the minimum variance (MV) processors were applied to the measured data. The results of data analysis and localization are presented in the paper. Finally, it is shown that the mechanical noise, as well as the propeller noise can be successfully localized using the proposed localization method. View Full-Text
Keywords: noise localization; hydrophone array; model test; large cavitation tunnel noise localization; hydrophone array; model test; large cavitation tunnel

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Park, C.; Kim, G.-D.; Park, Y.-H.; Lee, K.; Seong, W. Noise Localization Method for Model Tests in a Large Cavitation Tunnel Using a Hydrophone Array. Remote Sens. 2016, 8, 195.

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