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http://dx.doi.org/10.5574/KSOE.2014.28.5.440

Investigation of Target Echoes in Multi-static SONAR system - Part II : Numerical Modeling with Experimental Verification  

Ji, Yoon Hee (Ocean Engineering, Korea Maritime and Ocean University)
Bae, Ho Seuk (Agency for Defense Development)
Byun, Gi-Hoon (Ocean Engineering, Korea Maritime and Ocean University)
Kim, Jea Soo (Ocean Engineering, Korea Maritime and Ocean University)
Kim, Woo-Shik (Agency for Defense Development)
Park, Sang-Yoon (HUENS Co., Ltd.)
Publication Information
Journal of Ocean Engineering and Technology / v.28, no.5, 2014 , pp. 440-451 More about this Journal
Abstract
A multi-static SONAR system consists of the transmitters and receivers separately in space. The active target echoes are received along the transmitter-target-receiver path and depend on the shape and aspect angle of the submerged objects at each receiver. Thus, the target echo algorithm used with a mono-static system, in which the transmitter and receiver are located at the same position, has limits in simulating the target echoes for a multi-static SONAR system. In this paper, a target echo modeling procedure for a 3D submerged object in space is described based on the Kirchhoff approximation, and the SONAR system is extended to a multi-static SONAR system. The scattered field from external structures is calculated on the visible surfaces, which is determined based on the locations of the transmitter and receiver. A series of experiments in an acoustic water tank was conducted to measure the target echoes from scaled targets with a single transmitter and 16 receivers. Finally, the numerical results were compared with experimental results and shown to be useful for simulating the target echoes/target strength in a multi-static SONAR system.
Keywords
Multi-static SONAR system; Active target echoes; Kirchhoff approximation;
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Times Cited By KSCI : 6  (Citation Analysis)
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