复杂目标多次散射计算的高频混合方法研究

在物理光学方法基础上，结合几何光学方法和射线跟踪方法，导出一种能有效计算复杂目标多次散射的高频混合方法一区域投影物理光学方法（AP／PO）。为验证方法的有效性，应用AP／PO方法计算了角反射器和相互垂直的两个导体板的雷达截面，计算结果与测量结果有很好的一致性。通过对某飞机模型RCS的计算及与实验数据对比，进一步证明AP／PO方法适用于复杂目标多次散射的计算。

A Hybrid High-Frequency Technique for Computing Multiple Scattering from Complex Targets

An effective hybrid high-frequency method of area projection/physical optics (AP/PO) technique is developed for analyzing multiple scattering from complex targets on the basis ofphysical optics combined with geometrical optics and ray tracing technique. As a demonstration,RCS of a dihedral corner reflector and a scattering system including two metallic plates, which areperpendicular to each other, is calculated respectively, the AP/PO results agreed well with those ofmeasured. Further, by comparing numerical calculation with experimental measurements of theRCS of an airplane model. it is proved that AP/PO technique is suitable for multiple scattering fromcomplex targets.