低纬地区电离层时空分布特征的层析结果分析  

ANALYSES OF TOMOGRAPHY RESULTS FOR THE IONOSPHERIC TEMPORAL-SPATIAL CHARACTERISTICS IN LOW-LATITUDE REGION

作　　者：闻德保[1] 吕慧珠 张啸[1] 

机构地区：[1]长沙理工大学交通运输工程学院,长沙410004

出　　处：《大地测量与地球动力学》2014年第6期72-75,共4页Journal of Geodesy and Geodynamics

基　　金：湖南省杰出青年基金项目(14JJ1021);国家自然科学基金项目(41174001;41174015);教育部科学技术类项目(213028A);湖南省教育厅重点项目(12A002)

摘　　要：利用IGS的126个观测站双频GNSS观测资料和电离层层析成像技术,重构了2005-06-10电离层电子密度随纬度、经度和高度的三维时空变化规律。研究了低纬度地区电离层电子密度分布的周日变化规律和垂直结构特性,分析了赤道异常结构南北驼峰的形成、发展和消亡过程,讨论了影响电离层电子密度反演精度的因素。3 D temporal-spatial variation regularity of ionospheric electron density were reconstructed by using the ionospheric tomography technique for the GNSS data of 126 stations on 10 June ,2005. The diurnal variation regu- larity of ionospheric electron density distribution and variation characteristics of the ionospheric vertical structure in low-latitude region were investigated and the prosess of occurrence, development and disappearance of the equatorial anomaly structure were carefully analyzed. The factors that impact the accuracy of ionospheric electron density were discussed, and some suggestions were given for further investigation of ionospheric tomography technique.

关 键 词：电离层 层析 赤道异常 电子密度 

分 类 号：P228.42[天文地球—大地测量学与测量工程]