平板目标与随机粗糙面对电磁波的复合散射

Composite Scattering of Electromagnetic Waves By the Plate Target and Random Rough Surface

建立了平板目标与随机粗糙面的复合散射模型．求解过程包括用板上感应电流的谱域积分表示平板目标的初级散射场；用物理光学方法计算随机粗糙面的次级散射场和统计分析复合散射的平均散射功率．通过选用正态分布粗糙面作为计算实例，数值结果显示出平板目标与随机粗糙面之间相互作用散射分量的重要性及空间分布特性．

A compositive model of electromagnetic scattering by the plate and random rough surface is established in this paper. The primary scattering field of the plate target is represented with a spectral integral of the induced currents. The secondary scattering field of the random rough surface is calculated by using Physic Optics (PO). Normally distributed surface is chosen in the model. The numerical results exhibit the significance of interactive scattering between the plate and random rough surface and the distributive characteristics in the space.