Frank Zimmermann is a Navigation Engineer at the Navigation Support Office at ESA/ESOC. He holds a Dr.-Ing. in Aerospace Engineering from University of Stuttgart. He is project manager of the Geodetic Reference Service Provider (GRSP) project at ESA in support of the Galileo program. Before he joined ESA, he worked for many years in space industry, where he was responsible for development projects in the satellite navigation domain and supported startups in the development of navigation applications. He is Deputy Chairman of the German Institute of Navigation DGON.

Camille Parra is currently a Ph.D. candidate at the Technical University of Munich. She received a Master’s degree in Geomatics and Geodesy from the École Nationale des Sciences Géographiques in France. Nowadays, she focuses her research on GNSS positioning, and in particular on High Accuracy Services and Galileo utilization.

Tom Willems obtained a PhD degree from Ghent University in 2006. From 2006 to 2021, he worked as embedded software engineer in GNSS signal processing and as system engineer at Septentrio and Antwerp Space. At both companies, he was deeply involved in the Galileo Test User Receiver projects for ESA. Next, he started working as an independent consultant. Since 2024, he is employed as Senior Consultant at CGI where his current assignment is to provide advisory services to the EC.

Krzysztof Sośnica graduated from the University of Bern, Switzerland, in 2014, obtaining a Ph.D. degree in Physics. He is now a full professor of satellite geodesy. His activities include precise orbit determination of GNSS and geodetic satellites, reference frame realizations, Earth's gravity field recovery, and the enhancement of the consistency between GNSS and SLR solutions.