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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 composite scattering model of slab target and random rough surface is established. The solution process includes using the integral of the induction field on the plate to represent the primary scattering field of the slab target; calculating the secondary scattering field of the random rough surface and the average scattering power of the statistical scattering by the physical optics method. By choosing the normal distribution rough surface as the calculation example, the numerical results show the importance of the scattering components and the spatial distribution of the interaction between the slab target and the random rough surface.