摘要
将ＮＡＨ方法应用于散射问题研究，由散射体近场全息图面上的复声压数据重建散射体表面的散射场，并进一步预报远场散射声指向性对于平面波入射下刚硬球的散射情况作了数值模拟，模拟结果与理论计算吻合较好。
The near-field acoustic holography (NAH) technique is applied to acoustic scatter problems.The scattered field on the scatter's surface is reconstructed from the complex pressure data on the hologram that is in the neighbourhood of the scatter.Then the far-field scattered sound directivity is predicted.As a numerical simulation example,a rigid spherical scatter with a plane incidence is studied.The coincidence between the numerical results and analytical results shows that NAH is applicable to the investigation on the scatter characteristics on the surface of target and far-field characteristics.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
1997年第5期15-19,共5页
Journal of Harbin Engineering University
关键词
近场声全息
声散射
目标散射场
水声学
near-field holography
acoustic scattering
inverse problem
