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http://dx.doi.org/10.7776/ASK.2006.25.4.172

Effectiveness Analysis on the Coherence and Time for Synthetic Aperture Sonar  

Kang Hyun-Woo (강남대학교 컴퓨터미디어공학부)
Publication Information
The Journal of the Acoustical Society of Korea / v.25, no.4, 2006 , pp. 172-177 More about this Journal
Abstract
Various research and development on Synthetic Aperture Sonar technique is under way to enhance bearing resolution of a SONAR system. In this paper, we estimated perturbed array shapes, and compensated distortion by using estimated away shapes and synthesized arrays in aperture domain such as an ETAM technique. As experimental data, we used the one obtained from towed array in neighboring waters of the Korean peninsula. Through simulation on data where tow-ship speed is maintained at a constant level, we confirmed that synthesis effect of increasing SNR and narrowed beam width of main lobe was consistently demonstrated for about 1 minute when coherence of target signal was maintained. Also, we showed that the synthesis effect with respect to time was constantly maintained.
Keywords
Synthetic Aperture Sonar; Array Shape Estimation; Korean Littoral Environment; Coherence;
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