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http://dx.doi.org/10.7776/ASK.2014.33.6.366

Low-Frequency Active Echo Reduction Using a Tile Projector  

Lee, Jae-Wan (연세대학교 기계공학부)
Woo, Sangbeom (연세대학교 기계공학부)
Jang, Hada (연세대학교 컴퓨터정보통신공학부)
Lee, Keunsang (연세대학교 컴퓨터정보통신공학부)
Kim, Wan-Gu (성균관대학교 물리학과)
Kang, Hwi-Suk (성균관대학교 물리학과)
Ohm, Won-Suk (연세대학교 기계공학부)
Park, Youngcheol (연세대학교 컴퓨터정보통신공학부)
Yoon, Suk Wang (성균관대학교 물리학과)
Seo, Youngsoo (국방과학연구소)
Publication Information
The Journal of the Acoustical Society of Korea / v.33, no.6, 2014 , pp. 366-374 More about this Journal
Abstract
With the advent of submarine detection technology using low-frequency active sonar there is a call for a new submarine stealth device that can replace the existing passive anechoic tiles. Proposed in this study is a low-frequency echo reduction technique based on active impedance matching, which employs a tile projector designed to cover a wide area such as the surface of a ship. To judge the feasibility of the active impedance matching technique finite-element simulations of low-frequency echo reduction are performed. Based on the analysis, a tile projector is designed, fabricated, and tested in an acoustic tank for its low-frequency echo reduction performance.
Keywords
Low-frequency; Echo reduction; Tile projector; Active impedance matching;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 W. S. Chang and D. R. Gweon, "Study on sound reflection control using an active sound absorber" (in Korea), J. Acoust. Soc. Kr. 28, 806-814 (2009.)   과학기술학회마을
2 M. B. Braga, B. Honein, P. E. Barbone, and G. Herrmann, "Suppression of sound reflected from a piezoelectric plate," J. Intell. Mater. Syst. Struct. 3, 209-223 (1992).   DOI
3 C. L. Scandrett, Y. S. Shin, K. C. Hung, M. S. Khan, and C. C. Lilian, "Cancellation techniques in underwater scattering of acoustic signals," J. Sound Vib. 272, 513-537 (2004).   DOI   ScienceOn
4 F. D. Shields, Piezoelectric Panel Speaker, US005196755, (1993).
5 T. R. Howarth, V. K. Varadan, X. Q. Bao, and V. V. Varadan, "Piezocomposite coating for active underwater sound reduction," J. Acoust. Soc. Am. 91, 823-831 (1992).   DOI
6 L. D. Lafleur, F. D. Shields, and J. E. Hendrix, "Acoustically active surfaces using piezorubber," J. Acoust. Soc. Am. 90, 1230-1237 (1991).   DOI
7 W. Chang, D. Kwon, J. Park, and B. Jeon, "An active underwater acoustic reflection control system," Multisensor Fusion and Integration for Intelligent Systems, 2008. MFI 2008. IEEE International Conference on, 583-587 (2008).