| 等离子体天线轴向密度数值模拟和辐射图计算 |
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| 引用本文： | 赵国伟,王之江,徐跃民,梁志伟,徐杰.等离子体天线轴向密度数值模拟和辐射图计算[J].中国科学院研究生院学报,2007,24(4):419-424. |
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| 作者姓名： | 赵国伟 王之江 徐跃民 梁志伟 徐杰 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心,北京,100080;中国科学院研究生院,北京,100049
2. 中国科学院空间科学与应用研究中心,北京,100080 |
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| 摘 要： | 由于电子密度分布、激励功率、气压等因素的影响，等离子体天线参数（增益、方向图等）通常难以求解。本文利用时域差分建立电磁波沿等离子体天线激励和传播的模型，得到不同参数（如激励功率、碰撞频率、等离子体迟豫时间、每个电子对所需能量）对等离子体轴向电子密度分布的影响，解释了不同激励情况下电子密度的线性和非线性分布，并解决了信号沿等离子体天线传播的波矢分布、辐射方向图的求解问题。
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| 关 键 词： | 等离子体密度 射频 辐射方向图 电磁波 |
| 文章编号： | 1002-1175(2007)04-0419-06 |
| 修稿时间： | 2006年12月25 |
Numerical Calculation of Plasma Density and Radiation Pattern |
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| ZHAO Guo-Wei,WANG Zhi-Jiang,XU Yue-Min,LIANG Zhi-Wei,XU Jie.Numerical Calculation of Plasma Density and Radiation Pattern[J].Journal of the Graduate School of the Chinese Academy of Sciences,2007,24(4):419-424. |
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| Authors: | ZHAO Guo-Wei WANG Zhi-Jiang XU Yue-Min LIANG Zhi-Wei XU Jie |
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| Institution: | Center of Space Science and Application Research,Science Academy of China
Science Academy of China |
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| Abstract: | Under the influence of such factors as plasma density, exciting power, air pressure, it is difficult to solve plasma antenna parameters, for example, gain, radiation pattern. This paper uses time domain difference method to build a model of plasma antenna excitation and radiation driven by electromagnetic wave, and shows the influence of different parameters on plasma axis density distribution, for instance, exciting power, collision frequency, plasma delay time, ionization energy. In addition, it explains the linear and non-linear distribution of plasma density on different exciting occasions. Furthermore, it solves the wave vector distribution and radiationpattern of signal transmit by plasma antenna. |
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| Keywords: | plasma density radio frequency radiation pattern electromagnetic wave |
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