动态映射函数最新进展及其在GNSS遥感水汽中的应用研究

基金项目: 国家863计划资助项目(2007AA12Z310)；国家自然科学基金资助项目(40575011)；武汉暴雨研究所科研业务资助项目(IHR2006K02)

详细信息

Latest Progress of Dynamic Mapping Functions and Its Application to GNSS Retrieved Water-Vapor

¹Research Center of GNSS,Wuhan University,129 Luoyu Road,Wuhan 430079,China;²State Supervision and Testing Center of Surveying and Mapping Product,198 2nd Section North Renmin Road, Chengdu 610081,China

Funds: 国家863计划资助项目(2007AA12Z310)；国家自然科学基金资助项目(40575011)；武汉暴雨研究所科研业务资助项目(IHR2006K02)

摘要: 给出了基于欧洲中尺度数值预报中心(ECMWF)构建的高精度动态映射函数VMF1和GMF的研究进展及方法,对NMF、VMF1和GMF三种映射函数进行了时空分析,结合实例分析了三种映射函数在GNSS遥感水汽中的应用。实验结果证实,动态映射函数VMF1和GMF较常规NMF函数具有更高的精度和全球覆盖性,且基于ECMWF构建的动态映射函数可以提高GNSS遥感水汽的精度。
- 动态映射函数 /
- 地基GNSS气象 /
- 数值天气模式 /
- GNSS信号方向湿延迟
Abstract: We give two models of VMF1 and GMF derived from ECMWF data based on NMF model,present the space-time analysis of three mapping functions.A real example of ground-based GNSS retrieved water-vapor is given to demonstrate the accuracy of VMF1 and GMF models.It is shown that the application of VMF1 and GMF improves the precision of GNSS retrieved water-vapor.At the same time,many investigations may be concentrated on the repeat rate of baseline length,absolute changes of station heights,and the terrestrial reference frame.
- dynamic mapping functions /
- ground-based GNSS meteorology /
- numerical weather model /
- GNSS slant-path wet delay