The Physical Optics (PO) method and the method of Equivalent Currents (MEC) are discussed starting with the concept of RCS and the basic theory of electromagnetic scattering.
本文从雷达散射截面(RCS)的概念及基本电磁散射理论入手，讨论了计算rcs的物理光学法和等效电磁流法。
The Physical Optics (PO) method is used to predict the RCS of complex targets, in this instance the Chengdu J-20 prototype.
物理光学（PO）方法被用来预测复杂目标，也就是成都歼20原型机的RCS。
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