基于CORS数据反演江苏上空电离层电子密度

本文利用IRI2007模型和江苏CORS网数据,结合附加约束的同时迭代重构算法,反演了地磁平静日江苏上空电子密度的结构分布。结果表明,整个研究区域电子密度在不同纬度和不同高度上存在明显的日变特征,电子密度最大值出现在北京时13～15时,随着时间推移,峰值幅度衰减;白天出现明显的E层,夜晚消失;反演结果说明了电离层三维层析技术为监测电离层时空结构提供了一种强有力的实验支持。

Inversion of ionospheric electron density over Jiangsu with CORS data

Using the GPS data from Jiangsu CORS and IRI2007 model,based on the constrained simultaneous iteration reconstruction technique,the temporal-spatial variations of ionospheric electron density over Jiangsu during the magnetic quiet were inverted in the paper.The reconstructed images showed clearly the diurnal evolution of equatorial anomaly and the variations of the vertical structure of ionosphere.The maximum value of Ne occurs at 13~15 o'clock.After this time,the peak amplitude of Ne reduces gradually.E layer appears during the day and disappears during the night.The studies demonstrated that time-dependent 3D CIT with ground-based is rather effective to monitor the evolution of large-scale ionospheric structures.