利用GAMIT对江西省GPS可降水量的反演应用

USING GAMIT TO DERIVATE THE PRECIPITABLE WATER(PW)OF JIANGXI PROVINCE

GAMIT是由麻省理工学院(MIT)和斯克里普斯海洋学院(SIO)开发的拥有高精度的GPS专业处理软件。针对GAMIT软件在Linux操作系统上的安装、GPS观测站的参数表文件和配置文件的编辑、天顶对流层总延迟的解算,以及可降水量的反演的方法和流程进行了探讨,总结了GAMIT软件的一些使用经验和注意事项。同时,利用南昌站每日2次的探空资料所计算的大气可降水量对同时刻运用GAMIT反演的南昌站GPS大气可降水量进行了对比分析,发现运用GAMIT反演的GPS大气可降水量具有较高的精度。

GAMIT is a professional and accurate GPS analysis software developed by Massachusetts Institute of Technology（MIT） and Scripps Institution of Oceanography（SIO）.This paper firstly described the installation method of GAMIT on Linux operating system,the compilation of parameter-table files and configuration files for the GPS observation data,the calculation of zenith total delay（ZTD）and the derivation of precipitable water（PW）,then summarized the application experience.With the PW calculated by the sounding data of Nanchang,the accuracy of GPS PW derived from GPS observation data was analyzed.The results show that the GPS PW has highly precision.