1. VEGA Space GmbH, Navigation Support Office, European Space Operations Centre, European Space Agency; Darmstadt Germany
2. Centre for RF Propagation and Atmospheric Research, QinetiQ Ltd.; Malvern UK
3. Institute for Communication and Navigation, German Aerospace Centre; Neustrelitz Germany
4. Research Group of Astronomy and Geomatics; Technical University of Catalonia; Barcelona Spain
5. VITROCISET, Wave Interaction and Propagation Section, European Space Technology Centre, European Space Agency; Noordwijk Netherlands
6. Navigation Support Office, European Space Operations Centre, European Space Agency; Darmstadt Germany