| 基于FDTD方法的电波在等离子体中传输特性研究 |
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| 引用本文： | 郭彤,彭坚,肖卫东.基于FDTD方法的电波在等离子体中传输特性研究[J].国防科技大学学报,2013,35(6). |
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| 作者姓名： | 郭彤 彭坚 肖卫东 |
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| 作者单位： | 国防科学技术大学信息系统工程重点实验室,国防科学技术大学信息系统工程重点实验室,国防科学技术大学信息系统工程重点实验室 |
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| 摘 要： | 根据时域有限差分法(Finite Difference Time Domain, FDTD)的基本原理，本文首先分析了等离子体的物理场特性及数值计算，然后介绍了飞行器再入时等离子鞘的形成以及等离子体相对介电常数对波的衰减，最后通过三维FDTD和二维FDTD模拟了电磁波在等离子体中的传播情况，证明了FDTD方法是解决电磁波在复杂媒质中传播的一种有效方法，并探究了飞行器再入段黑障区通信的理论和方法。
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| 关 键 词： | 电磁波传播 FDTD 等离子体 |
The Transmission Characteristics Research of Radio Wave In The Plasma Based on Finite Difference Time Domain |
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| Abstract: | According to the basic principles of the finite difference time domain (FDTD) method, this paper firstly analyzed the physical field characteristics and the numerical calculation of the plasma, and then introduced the reentry plasma sheath formed and plasma relative dielectric constant of the wave attenuation, last but not the least simulated the propagation of electromagnetic waves in the plasma with three-dimensional FDTD method and two-dimensional FDTD method, and proved the FDTD method was an effective method to solve the electromagnetic wave propagation in the complex medium, and explored the theory and methods of aircraft communication in the reentry blackout zone. |
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| Keywords: | Electromagnetic Waves Finite Difference Time Domain Plasma |
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