FDTD法分析等离子体对通信信号的影响  

Analysis of Impact of the Plasma Sheath on Communication Signals by FDTD Method

作　　者：贾龙 马红光[1] 孙璟潇 

机构地区：[1]第二炮兵工程大学空间工程系,陕西西安710025

出　　处：《压电与声光》2016年第1期151-153,157,共4页Piezoelectrics & Acoustooptics

基　　金：总装预研基金资助项目(513010603)

摘　　要：介绍了时域有限差分(FDTD)算法的基本原理,对FDTD算法进行了理论研究和公式推导,建立等离子体的模型,并运用FDTD算法对等离子体和电磁波间的作用机理进行了数值计算。运用MATLAB软件对结果进行了仿真,分析了等离子频率、等离子数量和碰撞频率等重要参数对电磁波反射特性的影响,并由此可得计算结果与目前的解析法和WKB方法结果接近,具有很高的准确性。This paper introduces the basic principle of FDTD algorithm,and the theoretical analysis and formula derivation of FDTD algorithm are carried out.Through modeling the plasma and adopting this algorithm,the mechanism between the electromagnetic wave and plasma will be calculated.Through adopting the MATLAB software to simulate the results,the influences of the plasma frequency,the amount of plasma and collision frequency on the refection characteristics of electromagnetic waves are analyzed.Some important conclusions will be got,and the veracity of results is high compared with the analytical method and WKB method.

关 键 词：等离子体 反射特性 时域有限差分(FDTD)算法 

分 类 号：TP92[自动化与计算机技术]