区域电离层TEC建模及其在磁暴上的应用
-
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,15 min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。Abstract: Itmainly introduces the method forresolving the differential code bias of satellites and stations, and uses the loworder 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 results are compared with the results published by IGS. The calculated results are in agreement with the results of IGS. For the magnetic storms occurring on March 17, 2015, the electronic 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 phenomenon better.
-
Key words:
- Hardware delay /
- Spherical harmonic function /
- VTEC /
- Ionosphere /
- magnetic storm
-
[1] 陈尚登,岳东杰,李亚. 基于球谐函数区域电离层模型建立［J］.测绘工程,2015,24(11):28-32. [2] 李东,王静,宋淑丽,等.基于区域电离层建模的硬件延迟参数估计［J］.测绘工程,2011,20(6):40-44 [3] 章红平,韩文慧,黄玲,等. 地基GNSS全球电离层延迟建模［J］. 武汉大学学报（信息科学版）,2012,37(10):1186-1191. [4] 吴显兵,徐天河,李施佳. 基于GPS数据的近海区域电离层建模及其精度估计［J］.海洋测绘,2015,35(3):29-42. [5] 薛军琛,宋淑丽,朱文耀,等. 区域GPS网实测电离层变化和卫星硬件延迟的可靠性研究 ［J］.天文学报,2011,52(4):310-321. [6] 郑作亚,程宗颐,黄珹,等.对Blewitt周跳探测与修复方法的改进［J］.天文学报,2005,46(2):216-224. [7] 陶学林.基于地基GPS的电离层延迟改正模型建立及精度估计［D］.安徽:合肥工业大学,2015. [8] 王园.基于地基GPS数据的地震电离层异常研究［D］.北京:清华大学,2014. -
点击查看大图
计量
- 文章访问数: 412
- HTML全文浏览量: 82
- PDF下载量: 123
- 被引次数: 0
下载:
