Guigen Nie is a professor in Geodesy in Wuhan University. As a professor, he teaches courses on Modern Geodesy, GPS Theory and Application and supervises the graduate students. As a director, he has responsibility for the Wuhan University GNSS Station, which is the key station of IGS (International GNSS Services). He obtained his MEng and Ph,D. degrees in Geodesy from Wuhan University, Wuhan, in 1996 and 2002, respectively.