磁暴事件对高精度TEC二维分布的影响  

Influence of geomagnetic storm on the two-dimensional distribution of TEC

作　　者：余侯芳 郭文兴 张玉强 冯健[1] 甄卫民[1,4] YU Houfang;GUO Wenxing;ZHANG Yuqiang;FENG Jian;ZHEN Weimin(China Research Institute of Radio Wave Propagation,Qingdao 66107,China;ZhongXing Telecommunication Equipment Corporation,Shenzhen 518057,China;School of Physics and Optoel Ectronic Engineering,Xidian University,Xi’an 710071,China)

机构地区：[1]中国电波传播研究所,山东青岛266107 [2]中兴通讯股份有限公司,广东深圳518057 [3]西安电子科技大学物理与光电工程学院,陕西西安710071 [4]中国空间学会空间物理专业委员会

出　　处：《全球定位系统》2019年第3期23-31,共9页Gnss World of China

基　　金：国家重点研发计划(2018YFB0505100)

摘　　要：电离层总电子含量(TEC)是电离层探测与研究工作的重要特征参量之一.利用地基GPS接收站台网,可以获得大量的垂直TEC数据.本文提出一种高精度TEC地图重构方法,基于Kriging法对垂直TEC进行插值处理,实现了亚大区域高分辨率TEC二维分布的重构,并与实测数据对比验证了本方法的精度和有效性.基于此二维分布,分析了区域TEC值随时间、纬度的变化情况;重点分析了磁静日与磁暴期间南北半球不同纬度TEC值的不同表现特征,并给出了磁暴期间不同纬度TEC的变化趋势所存在的差异及其解释,相关研究成果可为区域高分辨率电离层监测系统的建立提供方法支撑.The Ionospheric Total Electron Content(TEC)is one of the most important parameters in ionospheric sounding.A large number of vertical TEC data can be obtained by using the hundreds of GPS stations which are distributed around the world.In this paper,a reconstruction method of high precision TEC is proposed,and the Kriging interpolation method is used to interpolate the vertical TEC data in order to obtain the high resolution two-dimensional distribution of TEC.The accuracy and effectiveness of the proposed method are compared with the measured data.Based on the two-dimensional distribution,the changes of regional TEC value with time and latitude are analyzed,particularly in the influence of geomagnetic storms on the TEC value.and The differences and explanations of TEC changes in different latitudes are also given.The related research results can provide the method support for the establishment of regional high resolution ionospheric monitoring system.

关 键 词：全球卫星导航系统 电离层总电子含量 KRIGING方法 亚大地区 磁暴 

分 类 号：P352[天文地球—空间物理学]