基于反投影方法的对流层延迟三维层析研究

摘要

Tropospheric delay density is resolved with the ground-based GPS monitoring network data in USA solved by the GAMIT/GLOBK software based on tropospheric slant path total delay virtualized by back-projection method.Tropospheric delay 3D feature is analyzed by the method of tomography.The result shows that zenith total delay solved by two methods is small,the maximum error is less than 5 mm,and the mean square is 4.1 mm.%利用GAMIT/GLOBK软件解算美国地基GPS监测网数据,获得天顶对流层总延迟,并基于反投影方法虚拟对流层斜路径总延迟量,解算了对流层延迟密度.运用层析技术分析该地区对流层延迟三维特征,结果表明,反投影方法估算的天顶对流层总延迟与GAMIT解算的结果相差很小,最大残差小于5 mm,中误差为4.1 mm.