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http://dx.doi.org/10.9766/KIMST.2022.25.3.231

A Study on Mine Localization of Forward Looking Sonar Considering the Effect of Underwater Sound Refraction  

Sul, Hoseok (Department of Marine Science and Convergence Technology, Hanyang University)
Oh, Raegeun (Department of Marine Science and Convergence Technology, Hanyang University)
Yang, Wonjun (Department of Marine Science and Convergence Technology, Hanyang University)
Yoon, Young Geul (Department of Marine Science and Convergence Technology, Hanyang University)
Choi, Jee Woong (Department of Marine Science and Convergence Engineering, Hanyang University ERICA)
Han, Sangkyu (R&D Center, Conet sys Co., Ltd.)
Kwon, Bumsoo (Naval R&D Center / Naval System 2 Team, Hanwha Systmes Co., Ltd.)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.25, no.3, 2022 , pp. 231-238 More about this Journal
Abstract
Mine detection has been mainly studied with images of the forward-looking sonar. Forward-looking sonar assumes the propagation path of the sound wave as a straight path, creating the surrounding images. This might lead to errors in the detection by ignoring the refraction of the sound wave. In this study, we propose a mine localization method that can robustly identify the location of mines in an underwater environment by considering the refraction of sound waves. We propose a method of estimating the elevation angle of arrival of the target echo signal in a single receiver, and estimate the mine location by applying the estimated elevation angle of arrival to ray tracing. As a result of simulation, the method proposed in this paper was more effective in estimating the mine localization than the existing method that assumed the propagation path as a straight line.
Keywords
Forward Looking SONAR; Target Localization; Elevation Angle Estimation; Mine Detection;
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