Positioning with the four GNSS: GPS, GLONASS, GALILEO and BEIDOU based on phase clocks

Presentation explaines the simulation scenario for positioning with four GNSS where improvements in the station coordinates, station heights, troposphere, orbits and EOPs are explained. Particularlly are discussed the possibilities in improving GPS orbits using GALILEO data, poositioning with phase clocks and ambiguity resolution based on phase clocks.