摘要
使用电离层残差组合观测值和低阶球谐函数模型对区域电离层TEC建立实时模型，选择欧洲均匀分布的14个IGS观测站，15分钟实时解算一个VTEC模型，并应用于单频PPP实验中。与CODE模型进行对比，VTEC差值优于2TECU，VTEC预报模型精度95%优于1TECU，在模拟实时单频PPP实验中，预报模型定位结果在天顶方向有17%～30%的改善，水平方向有15%～30%的改善。
The real time regional ionospheric TEC is modeled using the ionospheric residuals combination observations and the low order spherical harmonic function, 14 IGS stations from Europe are chosen as a net, a VTEC model is calculated every 15 minutes, which is also applied to the experiment of singlefrequency PPP. By comparison with the CODE model, it shows that the difference of the VTEC is less than 2 TECU, the 95% accuracy of forecast model is less than 1TECU. In the test of singlefrequency PPP, the positioning results have 17%-30% improvement in the zenith direction and 15%-30% in the horizontal direction.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第5期39-43,共5页
Journal of Geodesy and Geodynamics
基金
地球空间环境与大地测量教育部重点实验室基金(12-02-01)
