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http://dx.doi.org/10.7776/ASK.2013.32.2.104

High-frequency Reverberation Simulation of High-speed Moving Source in Range-independent Ocean Environment  

Kim, Sunhyo (한양대학교 해양융합과학과 해양음향연구실)
Lee, Wonbyoung (해군해양전술정보단)
You, Seung-Ki (LIG 넥스원(주) M&S 연구센터)
Choi, Jee Woong (한양대학교 해양융합과학과 해양음향연구실)
Kim, Wooshik (국방과학연구소)
Park, Joung Soo (국방과학연구소)
Park, Kyoung Ju (해군사관학교)
Publication Information
The Journal of the Acoustical Society of Korea / v.32, no.2, 2013 , pp. 104-115 More about this Journal
Abstract
In a shallow water waveguide, reverberation signals and their Doppler effects form the primary limitation on sonar system performance. Therefore, in the reverberation-limited environment, it is necessary to estimate the reverberation level to be encountered under the conditions in which the sonar system is operated. In this paper, high-frequency reverberation model capable of simulating the reverberation signals received by a high-speed moving source in a range independent waveguide is suggested. In this model, eigenray information from the source to each boundary is calculated using the ray-based approach and the optimizing method for the launch angles. And the source receiving position changed by the moving source is found by a scattering path-finding algorithm, which considers the speed and direction of source and sound speed to find the path of source movement. The scattering effects from sea surface and bottom boundaries are considered by APL-UW scattering models. The model suggested in this paper is verified by a comparison to the measurements made in August 2010. Lastly, this model reflects well statistical properties of the reverberation signals.
Keywords
Reverberation model; Scattering path-finding algorithm; Time series simulation; Statistical properties of scattered signals;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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