| 基于人工电离层扰动对地-电离层波导传播的VLF波的影响 |
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| 引用本文： | 杨巨涛,李清亮,王建国,郝书吉.基于人工电离层扰动对地-电离层波导传播的VLF波的影响[J].地球物理学报,2017,60(2):463-469. |
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| 作者姓名： | 杨巨涛 李清亮 王建国 郝书吉 |
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| 作者单位： | 1. 西安交通大学电子与信息工程学院, 西安 710049;2. 中国电波传播研究所青岛分所, 青岛 266107;3. 西北核技术研究所, 西安 710024 |
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| 基金项目： | 电波环境特性及模化技术重点实验室专项资金（201600017）资助. |
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| 摘 要： | 基于低电离层加热理论和甚低频电波在地-电离层波导中传播理论,建立低电离层扰动对甚低频电波传播影响的分析模型,并利用实验数据验证了该模型的正确性.据此模型,研究了加热功率、加热波极化以及背景参数所导致的低电离层扰动对不同频率甚低频电波传播的影响.结果表明,低电离层扰动越强,则通过该区域内甚低频波幅度和相位的相对变化越强,通过研究地-电离层波导甚低频信号通过人工扰动区域后幅度和相位的变化,可望用于诊断人工电离层扰动强度.
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| 关 键 词： | 低电离层加热 VLF传播 幅度和相位变化 |
| 收稿时间： | 2016-03-09 |
Theoretical analysis of effects of artificial ionospheric disturbance on VLF propagation |
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| YANG Ju-Tao,LI Qing-Liang,WANG Jian-Guo,HAO Shu-Ji.Theoretical analysis of effects of artificial ionospheric disturbance on VLF propagation[J].Chinese Journal of Geophysics,2017,60(2):463-469. |
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| Authors: | YANG Ju-Tao LI Qing-Liang WANG Jian-Guo HAO Shu-Ji |
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| Institution: | 1. School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China;2. China Research Institute of Radiowave Propagation, Qingdao 266107, China;3. Northwest Institute of Nuclear Technology, Xi'an 710024, China |
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| Abstract: | An analysis model is proposed for the influences of artificial modification in the lower ionosphere on the VLF wave propagation. It is based on theories of lower ionospheric heating and VLF wave propagation in the earth-ionosphere ducts. The model is validated by comparison with experimental data available. A following elaborated research is performed, which focuses on the effects of heating parameters (i.e. effective radiation power and polarization pattern of pumping wave) and ionospheric background parameters on VLF wave propagation with different frequencies. The results show that the relative amplitude and phase variations of VLF waves in the disturbed region are more considerable, provided that the artificial ionospheric modification is higher. Numerical results show that the research on relative amplitude and phase variations of VLF waves is helpful for diagnostics of the artificial ionospheric modification degree. |
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| Keywords: | Lower ionospheric heating VLF propagation Amplitude and phase variations |
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