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The prediction method of acoustic scattering from elastic target with structure anechoic coating layer is investigated at low frequency. The physical model is acoustic scattering from elastic shell with structure anechoic coating layer. The transmission matrix method and parameter matching method are used to obtain the parameters of the equivalent homogeneous viscoelastic layers. The coupling method...
The geometrical and elastic scattering highlights of an underwater target will bear aliasing in the time domain and in the frequency domain. Limited by the resolution capacity, existing signal processing approaches cannot obtain elastic scattering highlights information of a target directly. According to the related researches, the elastic highlights appear within a certain range of the angle of incidence...
The Bessel beam has been proved to show several advantages over the plane wave for its superior characteristics, including nondiffraction and self-reconstruction properties. The Bessel beam is characterized by an important parameter, called the half-conical angle, which describes the angle of the planar wave components of the beam relative to the beam axis. In this research paper, the T-matrix method...
The Shallow-water environment has significant influences on the acoustic scattering from objects, but the characteristics are quite different from those of free-space problems. A high-performance numerical model of conventional and fast multipole BEM based on Burton-Miller formulation for acoustic scattering from objects in shallow-water waveguides is established for the first time. The numerical...
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