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Underwater acoustic scattering of a Bessel beam by rigid objects with arbitrary shapes using the T-matrix method

机译：刚性物体的水下声学散射，刚性物体采用T-矩阵法具有任意形状的刚性物体

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The T-matrix method has been extended to compute backscattering of rigid structures by a Bessel beam, which is a kind of approximate non-diffracting beam and characterized by the cone angel of its plane wave components. In this work, backscattering of underwater rigid spheroids and finite cylinders with spheroidal endcaps were calculated. The backscattering form function modulus |F| is curved as a function of dimensionless frequency ka. Meanwhile, the peak to peak intervals in backscattering form function caused by the interference of the specular wave and the Franz wave have been analyzed in geometry, so as to the relation with the cone angel of the Bessel beam. The work of this paper could be helpful to the applications of Bessel beams on the acoustic detection of the submerged complex-shaped objects.
机译：T-矩阵方法已经扩展以通过贝塞尔光束计算刚性结构的反向散射，这是一种近似的非衍射光束，其特征在于其平面波部件的锥形天使。在这项工作中，计算了水下刚性球体和有限气缸的背散射，具有球形端盖。反向散射形式功能模量| F |作为无量纲频率Ka的函数弯曲。同时，在几何形状中分析了由镜面波和弗兰兹波的干扰引起的反向散射形式函数的峰值间隔的峰值间隔，从而与贝塞尔梁的锥形天使的关系。本文的工作可能有助于贝塞尔光束在浸没式复合物体的声学检测上的应用。

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