| 2009年7月22日日食期间VLF信号相位和场强的观测和分析 |
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| 引用本文： | 张世田,陈林如,王元新.2009年7月22日日食期间VLF信号相位和场强的观测和分析[J].时间频率学报,2011,34(1). |
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| 作者姓名： | 张世田 陈林如 王元新 |
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| 作者单位： | 中国电波传播研究所青岛分所,青岛,266071 |
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| 基金项目： | 国家重点实验室基金资助项目(9140C080405100C08) |
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| 摘 要： | 2009年7月22日日食期间,分别在重庆、桂林和青岛利用阿尔法场强与相位监测仪观测了来自俄罗斯阿尔法导航系统位于Novosibirsk、Krasnodar和Khabarovsk的3个发射台3个频率的甚低频信号,并对实验数据进行了分析。通过建立日食期间的电离层模型,结合实际传播路径地面电磁参数,推测全食区低电离层的等效高度;给出经不同路径传播的VLF(甚低频)信号相位突变与日食发生时刻的关系及原因;分析了日食期间经不同路径传播的VLF信号的场强起伏变化,发现场强变化滞后于相位变化这一现象。
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| 关 键 词： | 甚低频(VLF)异常传播 日食 传播相位 阿尔法导航系统 |
Observation and analysis of VLF phase/amplitude during a solar eclipse of July 22,2009 |
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| ZHANG Shi-tian,CHEN Lin-ru,WANG Yuan-xin.Observation and analysis of VLF phase/amplitude during a solar eclipse of July 22,2009[J].Journal of Time and Frequency,2011,34(1). |
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| Authors: | ZHANG Shi-tian CHEN Lin-ru WANG Yuan-xin |
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| Institution: | ZHANG Shi-tian,CHEN Lin-ru,WANG Yuan-xin(Qingdao Branch,Chinese Research Institute of Radiowave Propagation,Qingdao 266071,China) |
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| Abstract: | The phase and field strength of VLF signals at three frequencies,which were transmitted from Novosibirsk,Krasnodar and Khabarovs stations of the Russian alpha hyperbolic navigational system,were measured with the alpha phase/field-strength monitor in Chongqing,Guilin and Qingdao respectively during a solar eclipse of July 22,2009,and the measurements were analyzed.The ionospheric equivalent height in the total eclipse regions was derived by establishing the ionospheric model and considering the electromagne... |
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| Keywords: | VLF(very low frequency) abnormal propagation eclipse phase of propagation Alpha navigation system |
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