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本文应用不变性测试分程和有限差分方法分析Ｃｈｉｒａｌ媒质的电磁散射问题。应用该方法时，要在所讨论的区域内建立起一组有关电场和磁场的耦合差分方程，并且要在截断边界上应用不变性测试方程建立起有关边界点系数的方程。文中给出了一些非均匀、有耗且具有电大尺寸任意横截面Ｃｈｉｒａｌ柱的雷达散射截面的数值结果
In this paper, we analyze the electromagnetic scattering of Chiral medium using the invariance test method and finite difference method. When applying this method, a set of coupled difference equations for the electric field and the magnetic field should be established in the area in question, and the equations for the boundary point coefficients should be established by applying the invariance test equations to the truncated boundaries. The numerical results of some radar cross sections for non-uniform, dissipative and Chiral columns with electrically large cross-section of arbitrary cross-section are given