A two‐layer model of the ionosphere using Global Positioning System data
A two‐layer model of the ionosphere using Global Positioning System data
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DOI：
10.1029/97gl00092
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发表时间：
1997-02
影响因子：
5.2
通讯作者：
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
中科院分区：
文献类型：
--
作者：
J. Juan;A. Rius;M. Hernández‐Pajares;J. Sanz
本文提出了一种基于GPS数据的电离层建模新方法。以前的作者使用了具有独特外壳的模型。在这种情况下，我们包括了第二个壳层来解释电子在电离层外层的分布。利用卡尔曼滤波分析了在不同电离层活动条件下，赤纬30度以上地区的电离层电子含量。所使用的数据来自国际地球动力学GPS服务（IGS）网络。同时，我们还研究了在模型中忽略电离层外层的影响下的接收机和发射机的微分偏差。这似乎是接收机的系统变化——取决于其纬度——而不是卫星。
We present a new approach to model the Ionosphere based on GPS data. Previous authors have used models with an unique shell. In this case we have included a second shell to account for the distribution of the electrons in the outer part of the Ionosphere. We have analyzed the ionospheric electron content of a region above 30 degrees in declination in different conditions of ionospheric activity using the Kalman filter. The data used has been obtained from the International GPS Service for Geodynamics (IGS) network. Simultaneously we have studied the receiver and transmitter differential biases showing the effects of neglecting the outer part of the Ionosphere in the model. It appears a systematic variations for the receivers—depending on its latitude—not for the satellites.