区域电离层TEC建模及其在磁暴上的应用  

Modeling of Regional Ionospheric TEC and Its Application in Magnetic Storm

作　　者：王雪艳[1] 郭承军[1] WANG Xueyan GUO Chengjun(University of Electronic Science and Technology of China , Chengdu 611731, China)

机构地区：[1]电子科技大学电子科学技术研究院,四川成都611731

出　　处：《全球定位系统》2017年第3期7-10,共4页Gnss World of China

摘　　要：介绍计算卫星及测站硬件延迟的方法,采用低阶球谐函数模型进行系统组合硬件延迟的参数估计,选取欧洲区域内的10个IGS观测站,15min实时解算一个VTEC模型,对解算结果的准确性和稳定性与IGS公布的结果进行比较,计算结果与IGS的计算结果一致。针对2015年3月17日发生的磁暴,利用经过硬件延迟修正后的电子含量,研究测站上空的电离层电子含量的变化情况,表明其能较好地反映磁暴现象。Itmainly introduces the method forresolving the differential code bias of satel- lites and stations, and uses the low-order spherical harmonic function model to estimate the parameters of the system hardware delay, 10 IGS stations from European region are chosen as a net, a VTEC model is calculated every 15 minutes, The accuracy and stability of the re- sults are compared with the results published by IGS. The calculated results are in agree- ment with the results of IGS. For the magnetic storms occurring on March 17, 2015, the e- lectronic content of the ionosphere over the station is studied by using the electronic content adjusted with the differential code bias. It shows that it can reflect the magnetic storm phe- nomenon better.

关 键 词：硬件延迟 球谐函数 VTEC 电离层 磁暴 

分 类 号：P228.4[天文地球—大地测量学与测量工程]