各向异性磁化等离子体涂敷三维导体目标FDTD分析

把电流密度卷积-时域有限差分法(JEC-FDTD)推广应用于三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难题，给出了各向异性磁化等离子体中JEC-FDTD迭代公式.计算了各向异性磁化等离子体涂敷二面角反射器和球锥体后其RCS的变化情况，分析了电子回旋频率对其RCS的影响.计算结果表明磁化等离子体吸收性能更好. 关键词： 时域有限差分方法 各向异性磁化等离子体

FDTD analysis of 3-D conducting target coated by anisotropic magnetized plasma

The JEC finite-difference time-domain (JEC-FDTD) method is extended to three dimensional anisotropic dispersive media—the magnetized plasma. The problem which incorporates both anisotropy and frequency dispersion at the same time is solved for the electromagnetic wave propagation. The three dimensional JEC-FDTD formulations for anisotropic magnetized plasma are derived. The method is applied to the electromagnetic scattering of dihedral corner reflector and sphere-cone coated with anisotropic magnetized plasma. By simulating the interaction of electromagnetic wave with magnetized plasma, some numerical results are obtained, which indicate that an appropriate plasma coating may efficiently reduce the RCS of a metallic target.