[논문]Modeling of Long-Range Reverberation Signal for Rough Bottom Consisting of Polygon Facets

Choo, Youngmin; Seong, Woojae

doi:10.1142/s259172851850041x

Modeling of Long-Range Reverberation Signal for Rough Bottom Consisting of Polygon Facets

Journal of theoretical and computational acoustics, v.26 no.4, 2018년, pp.1850041 -

Choo, Youngmin (Department of Defense System Engineering, Sejong University, Seoul 05006, Korea) , Seong, Woojae (Department of Naval Architecture and Ocean Engineering and Research Institute of Marine System Engineering, Seoul National University, Seoul 08826, Korea)

Abstract ▼ AI-Helper

To acquire a stable reverberation signal from an irregular ocean bottom, we derive the analytic surface integral of a scattered signal using Stokes’ theorem while approximating the bottom using a combination of polygon facets. In this approach, the delay difference in the elemental scattering area is considered, while the representative delay is used for the elemental scattering area in the standard reverberation model. Two different reverberation models are applied to a randomly generated rough bottom, which is composed of triangular facets. Their results are compared, and the scheme using analytic integration shows a converged reverberation signal, even with a large elemental scattering area, at the cost of an additional computational burden caused by a higher order approximation in the surface integral of the scattered signals.

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참고문헌 (12)

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Modeling of Long-Range Reverberation Signal for Rough Bottom Consisting of Polygon Facets

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Modeling of Long-Range Reverberation Signal for Rough Bottom Consisting of Polygon Facets

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