顾及f~3项的电离层延迟模型

基金项目: 测绘遥感信息工程国家重点实验室开放研究基金资助项目(040201);南极考察基础测绘资助项目(1469990324229)

详细信息

Ionospheric Delay Model Containing f~3 Term

¹ School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 测绘遥感信息工程国家重点实验室开放研究基金资助项目(040201);南极考察基础测绘资助项目(1469990324229)

摘要: 给出了顾及f3项时消除电离层延迟的两种方法:用三频观测值来消除电离层延迟,直接用地磁场模型来计算f3项。提出了一种用一个三次曲面来拟合30°×40°的区域内的场强H的简化算法。用两种方法求得的电离层延迟之差小于0.5 mm。
- 电离层延迟 /
- 三频改正 /
- 球谐函数 /
- 曲面拟合 /
- 格网点
Abstract: Two methods to eliminate the ionospheric delay containingf3term are given.The first method is to eliminate ionospheric delay with triple-frequency observations.The second method is directly calculate thef3term.A simplified method is proposed that a three order polynomials is used to fit the geomagnetic field intensity of a 30°×40°area,which can achieve a rather good result.By comparison,the difference of the ionospheric delay between the calculated results by the two methods is less than 0.5 mm.
- innospheric delay /
- correction with triple-frequency observations /
- spherical har-monics /
- surface fitting /
- grid point