改进Z-FDTD方法分析等离子体的电磁散射  

Improved Z-FDTD Method Analysis of the Electromagnetic Scattering Characteristics from Plasma

作　　者：刘建晓[1] 苏明敏[1] 游雄[2] 李爱萍[2] 杨宏伟[2] 

机构地区：[1]衡水学院物理与电子信息工程学院,衡水053000 [2]南京农业大学理学院,南京210095

出　　处：《科学技术与工程》2013年第15期4418-4421,共4页Science Technology and Engineering

基　　金：国家自然科学基金(11171155);中央高校基本科研业务费专项资金(Y0201100265)资助

摘　　要：采用改进的Z变换方法研究了二维非均匀等离子体的散射特性,分析了TM、TE模式下不均匀等离子体包围金属圆柱的双站雷达散射截面。推导了二维情况下改进Z变换方法的公式。此方法具有推导过程简单,迭代公式简洁,计算精度高等优点,用于分析等离子体等色散介质的散射特性具有一定优势。给出了TM模式下电场分量的Matlab代码。数值结果表明,合适选择等离子体厚度、等离子体频率分布可在一定范围内降低目标的RCS,起到一定的隐身效果。Using an improved Z-transform method to study the scattering characteristics of the two-dimensional inhomogeneous plasma. The bistatic RCS of the metal cylinder surrounded by non-uniform plasma in the TM and TE mode are analyzed. For the method there are some advantages of simple derivation simple iterative formula and high precision.The formulas of improved Z-transform method are derived in the case Two-Dimensions. And parts of the Matlab codes on the TM mode are given. The numerical results show that the method has certain advantages for the analysis of the scattering properties of the plasma and other media. As the appropriate choice of the plasma frequency distribution and the thickness of the plasma can reduce the RCS of target in a certain range and play a stealth effect.

关 键 词：Z变换 二维 非均匀等离子体 双站雷达散射截面 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]