Precise positioning in multi-GNSS mode

Presentation to the Department of Geography of the University of Liège of the context of the research undertaken by the PhD Candidate Cécile Deprez. Multi-GNSS positioning improves single-GNSS positioning by many aspects including an increase in the number of satellites available for positioning and a reduction of the geometry impact. In addition, new signals show greater mutlipath mitigation (for instance Galileo E5a+b). Finally, single-frequency low-cost positioning devices could also benfit from multi-GNSS positioning and quantified results are provided to support this observation.