The Vienna University of Technology 的网址: http://www.tuwien.ac.at/ Department of Geodesy and Geoinformation( Vienna University of Technology) http://www.hg.tuwien.ac.at/ 对流层改正模型VMF1: http://mars.hg.tuwien.ac.at/~ecmwf1/ Johannes Boehm's Home Page( Boehm的个人主页): http://mars.hg.tuwien.ac.at/~jboehm/ GGOS Atmosphere : http://ggosatm.hg.tuwien.ac.at/index.html