The response of the ionosphere to faint and bright solar flares as deduced from global GPS network data
The response of the ionosphere to faint and bright solar flares as deduced from global GPS network data
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根据全球 GPS 网络数据推导出电离层对微弱而明亮的太阳耀斑的响应
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
L. A. Leonovich
中科院分区：
文献类型：
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作者：
E. Afraimovich;A. T. Altynsev;V. Grechnev;L. A. Leonovich
文中呈现了对电离层对微弱和明亮太阳耀斑响应进行分析所得的结果。该分析采用了作者开发的一种从太阳耀斑全球探测电离层效应的技术，该技术基于利用国际全球定位系统（GPS）网络对电离层总电子含量（TEC）进行的相位测量。该方法的核心是对从GPS数据确定的TEC变化进行适当的滤波和相干处理，同时针对分析中所使用的所有站点的整套可见GPS卫星进行处理。当对GPS卫星的单独视线方向的TEC响应变化幅度与背景波动水平相当时，这种技术对于识别电离层对微弱太阳耀斑（X射线C级）的响应是有用的。文中还研究了TEC变化响应幅度对太阳上明亮耀斑位置的依赖性。
Results derived from analysing the ionosphere response to faint and bright solar flares are presented. The analysis used technology of a global detection of ionospheric effects from solar flares as developed by the authors, on the basis of phase measurements of the Total Electron Content (TEC) in the ionosphere using an international GPS network. The essence of the method is that use is made of appropriate filtering and a coherent processing of variations in the TEC which is determined from GPS data, simultaneously for the entire set of visible GPS satellites at all stations used in the analysis. This technique is useful for identifying the ionospheric response to faint solar flares (of X-ray class C) when the variation amplitude of the TEC response to separate line-on-sight to GPS satellite is comparable to the level of background fluctuations. The dependence of the TEC variation response amplitude on the bright flares location on the Sun is investigated.