摘要
本文采用了一种新的既保证了计算的高效率,又有较高的计算精度的色散介质的FDTD算法称为分段线性电流密度递归卷积FDTD算法(PLJERC)的计算公式.研究了非均匀等离子体覆盖导体柱的散时特性.对TM波垂直入射时的双站、宽带仿真结果的分析表明,等离子体包层可以较大地减少雷达目标的电磁回波能量,衰减量与多种参数有关.
A novel FDTD formulation for dispersive media,which has high accuracy and efficiency,called piecewise linear current density recursive convolution (PLCDRC) finite different time domain (FDTD) method is applied to the electromagnetic scattering of perfectly conducting cylinder coated with non-uniform plasma in this paper.By simulating the interaction of electromagnetic wave with unmagnetized plasma,some bistatic and wide band numerical results are obtained,which indicate that plasma cloaking can greatly reduce the back wave energy of radar targets.
出处
《南昌大学学报（工科版）》
CAS
2003年第3期1-5,共5页
Journal of Nanchang University(Engineering & Technology)
基金
863计划课题(2002AA731181)
国防科技重点实验室基础项目(51483010301KG0102)资助
关键词
时域有限差分法
色散介质
电磁波
等离子体隐身技术
Finite-difference time-domain method
dispersive media
electromagnetic wave
Plasma stealthy
