涂层平板的高频电磁散射分析

An analysis of high-frequency EM scattering by a coated flat plate

文中利用平面波斜入射情况下阻抗半平面散射场的Ｗｉｅｎｅｒ－Ｈｏｐｆ解以及Ｓｉｅｇｅｌ的二维─三维场转换公式求得了矩形涂层平板的雷达散射截面（ＲＣＳ），计算结果与实验数据吻合良好。文中还把原来用于求理想导电劈焦散区场的等效电磁流法推广应用于阻抗半平面，求得了梯形涂层平析的ＲＣＳ。

The Wiener-Hopf solution of the diffraction of an obliquely incident plane wave by an impedance half plane and the Siegel’s formula of converting thetwo-dimensional field into thethree-dimenstonal field are used to calculate the radar cross section(RCS)of a coated rectangu-lar flat plate. The calculated result agrees well with the measured data. Furthermore, the equivalent current method is extended tosolve the problem of diffration by an impedance halfplane and the RCS of a coated trapezoidal flat plate is obtained.