Robert Weber is associate professor at the Department of Geodesy and Geoinformation, Vienna University of Technology, Austria. Born 1958 in Vienna, he holds a degree ‚Diplomingenieur’ (MSc) in Geodesy and Geoinformation and received his Phd in 1990 on regional gravity field modelling. He spent two years as research assistant at the University of Berne dealing with satellite navigation and orbit determination. His main fields of research are Global Navigation Satellite Systems, geodetic Reference Systems, active GNSS reference station networks and applications of GNSS for geodynamics and meteorology. He passed habilitation in 2000 on the derivation of nutation terms from GNSS measurements and was member of the 2003 awarded EU Descartes Prize team (new non-rigid Earth nutation model). Robert Weber teaches courses in satellite navigation and gravity field modelling at TU-Vienna and is involved in several scientific and commercial projects setting up regional GNSS reference networks, Network-RTK, Real-Time-PPP as well as GNSS Atmosphere Monitoring.