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用物理光学法研究导电平板目标近场散射特性，为了提高计算效率，文中采用了卷积积分法．通过计算机的模拟发现，当特征尺寸、入射场波长及观察点离目标的距离改变时，其散射场存在一定的换算关系，散射场出现近似的或严格的相似性
Near-field scattering characteristics of conductive slab are studied by using physical optics method. In order to improve computational efficiency, convolution integral method is used in this paper. Computer simulation shows that when the size of the feature, the wavelength of the incident field and the distance between the observation point and the target change, the scattering field has a certain conversion relationship and the scattering field has similar or strict similarities