摘要
采用z变换方法把时域有限差分方法(FDTD)推广应用于二维各向异性色散介质—磁化等离子体中,该算法同时解决了电磁波在各向异性和频率色散介质中传播的计算问题,给出了各向异性磁化等离子体中FDTD迭代公式.计算了各向异性磁化等离子体涂敷导体圆柱前后其雷达散射截面(RCS)的变化情况,分析了等离子体碰撞频率和电子回旋频率对其RCS的影响.
The finite-difference time-domain（FDTD） method is extended to two dimensional anisotropic dispersive media-magnetizedplasma using Z transformation for the fist time. The problem which incorporates both anisotropy and frequency dispersion at the same time is solved for the electromagnetic wave propagation. The two dimensional FDTD formulations for anisotropic magnetized plasma are derived. The method is applied to the electromagnetic scattering of perfectly conducting cylinder coated with anisotropic magnetized plasma. By simulating the interaction of electromagnetic wave with magnetized plasma, some bistatic numerical results are obtained, which indicate that an appropriate plasma coating may efficiently reduce the RCS of a metallic target.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第10期4789-4793,共5页
Acta Physica Sinica
基金
国家重点基础研究项目(批准号:2002AA731181)资助的课题.~~
