scattering of sound

By spherical function expansion of the scattered sound field in conjunction with rigid boundary conditions, formulas for reconstructing the shapes of rigid scattering objects are derived.

本文用球函数展开散射场，结合刚性边界条件导出了刚性目标的重构公式，并利用该公式重构了刚性球和椭球的形状。

In the measurement of random-incidence scattering coefficient by synchronized averaging of the impluse responses, the sound energy decay curve obtained by the backward integration of the squared averaged impulse will be influenced by the correlated components among these responses.

用脉冲响应同步平均法测量无规入射散射系数时，叠加后再经反向能量积分得到的声能衰减曲线，会受到不同脉冲响应中散射成分相关的影响。

It is shown that the dissipative effects are obvious and contain the scattering and absorption of sound by a bubble;

耗散作用由声散射和声吸收两部份组成；

According to the method of angular power spectrum for average sound field in shallow water, the transformation relation between arbitrary angle dependence of bottom scattering and the range dependence of long-range reverberation in shallow water homogeneous layer is established.

利用浅海平均声场角度谱分析法，在海底散射的任意角度关系和浅海均匀层远程混响的距离关系之间建立了变换关系。

It is shown that the scattering and absorption of sound waves by a gas bubble reduce quickly with the series of resonances increasing;

结果表明：气泡的声散射和声吸收随谐振阶数的增高而迅速减少；

Multiple Scattering of Sound Waves on the Surface of Parallel Cylindrical shells

声波在平行圆管表面上的多极子散射