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为解决电大尺寸目标雷达散射截面积(RCS)计算困难的问题,在建立电大尺寸目标几何模型的基础上,综合物理光学法、几何光学法和一致性绕射理论等高频方法,提出了电大尺寸目标RCS仿真分析方法,计算目标的一次散射和多次散射,采用矢量叠加的方法得到目标的RCS、多维像等信息。制作了1∶50舰船缩比模型,对缩比模型进行了仿真计算和实际测量,进行了RCS数据的比对分析。试验结果表明:仿真计算方法准确有效,可应用于舰船、飞机等目标的RCS仿真分析。
In order to solve the problem of computational difficulty of large RCS (Radar Large Area Targets) calculation, based on the establishment of geometric model of large target, a synthesis of high frequency method such as physical optics method, geometrical optics method and consistent diffraction theory, The size target RCS simulation analysis method calculates the primary scattering and multiple scattering of the target, and uses the vector superposition method to obtain the target RCS, multi-dimensional image and other information. A 1: 50 ship reduction ratio model was produced, and the simulation and actual measurement of the reduction ratio model were carried out. The RCS data comparison analysis was carried out. The experimental results show that the simulation method is accurate and effective and can be applied to the RCS simulation of ships, aircraft and other targets.