2-D High-Order DGTD Method and Its Application in Analysis of Sheath Propagation Characteristics
2-D High-Order DGTD Method and Its Application in Analysis of Sheath Propagation Characteristics
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二维高阶DGTD方法及其在鞘层传播特性分析中的应用
DOI：
10.1109/tps.2017.2731365
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发表时间：
2017
影响因子：
1.5
通讯作者：
Debiao Ge
中科院分区：
文献类型：
--
作者：
Linqian Li;Bing Wei;Qian Yang;Xin Yang;Debiao Ge
提出了一种基于高阶分层基函数的二维间断Galerkin时域（DGTD）格式。结合时域有限差分法求解色散介质电磁问题的位移算子法，给出了处理等离子体介质的DGTD法的迭代公式。在此基础上，以线元辐射为例，比较了不同基函数的计算能力。为了研究电磁波在鞘层中的传输特性，基于COMSOL商业软件的计算结果，采用拉格朗日插值技术，建立了不同飞行高度和飞行速度下钝锥等离子体鞘层的DGTD计算模型。通过计算和分析，讨论了天线位置、飞行高度和飞行速度对电磁波传输特性的影响。
A 2-D discontinuous Galerkin time-domain (DGTD) scheme based on high-order hierarchical basis function is presented in this paper. Combined with the shift operator method solving the electromagnetic problem of dispersive media in finite-difference time domain, the iterative formula of DGTD method in dealing with plasma media is given. On this basis, taking the example of line element radiation, the computing ability of different basis functions is compared. To study the transmission characteristics of the electromagnetic (EM) wave in sheath, the DGTD calculation models of the plasma sheath of a blunt cone at different flight heights and velocities are established using Lagrange interpolation technique based on the calculation results of COMSOL (business software). The influences of antenna position, flight altitude, and flight speed on transmission characteristics of the EM wave are discussed through calculation and analyses.