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http://dx.doi.org/10.5050/KSNVE.2017.27.1.043

A Study on the Low-frequency Active Echo Reduction Technology for Reducing Underwater Target Echo Signal  

Kim, Jaepil (Multimedia Signal Processing Lab., Yonsei University)
Ji, Youna (Multimedia Signal Processing Lab., Yonsei University)
Park, Young-cheol (Division of Computer & Telecommunications Engineering., Yonsei University)
Noh, Eunghwy (Yonsei University)
Ohm, Won-Suk (Yonsei University)
Choi, Yonggyu (Createch Co., Ltd.)
Kim, Daeup (Createch Co., Ltd.)
Seo, Youngsoo (Agency for Defense Development)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.27, no.1, 2017 , pp. 43-50 More about this Journal
Abstract
Acoustic tiles are typically installed on the surface of pressure vessels in submarines to minimize echoes based on the ship's own noise and active sonar. In this study, we studied low frequency active echo reduction techniques to reduce underwater target echo signals. Active control algorithms using tile type projectors and FxLMS logic have been developed and the projectors have been installed in the assumed hull structure. The effectiveness of projectors and control algorithms has been evaluated in time and frequency domain analysis through experiments in the tank.
Keywords
Acoustic Tile; Active Echo Reduction; Low Frequency;
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