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介绍目标ＲＣＳ分析计算中多次散射的计算方法，计算多次散射时主要考虑面元面元之间的相互作用，计算过程采用几何光学法（ＧＯ）、物理光学法（ＰＯ），在总后向ＲＣＳ计算中还运用了等效电磁流法．同时，文中讨论计算多次散射的程序实现技术．最后，给出计算例子，考虑多次散射时总的后向ＲＣＳ计算结果与前人发表的实验结果相吻合．
This paper introduces the calculation method of multiple scattering in the analysis and calculation of target RCS, and mainly considers the interaction between surface element and element element in the calculation of multiple scattering. The calculation process uses geometric optical method (GO), physical optical method (PO) After the RCS calculation also used the equivalent of electromagnetic flow method. At the same time, the paper discusses the calculation of multiple scattering procedures to achieve technology. Finally, given the calculation example, the total backscattering RCS calculation considering the multiple scattering is consistent with the published experimental results.