分段线性电流卷积时域有限差分法及在等离子体隐身技术中的应用

PIECEWISE LINEAR CURRENT CONVOLUTION FINITEDIFFERENCE TIME-DOMAIN METHOD AND ITS APPLICATION IN PLASMA STEALTH TECHNOLOGY

给出了一种高效性和高精度的算法———分段线性电流卷积时域有限差分算法,并应用于模拟电磁场在色散等离子体介质中的传播。给出了电磁波在非磁化等离子体平板的反射系数,并对算法的高效性和高精度进行了验证。用分段线性电流卷积时域有限差分算法计算了等离子体覆盖的二维方柱的双站雷达散射截面,并对结果进行了分析。

A finite- difference time- domain formulation for dispersive media, called piecewise linear current convolution （ PLCC ） finite different time domain （FDTD） method is presented. It is applied to simulate the electromagnetic wave propagation in dispersive plasma media. The reflection coefficient of electromagnetic wave through a collision plasma slab is computed. The high accuracy and efficiency of this method is confirmed. The bistatic RCS of perfectly conducting square cylinder coated with non - uniform plasma is obtained. The results are discussed.