VLBI Scheduling and Simulations for the Genesis Mission

The reduction of systematic errors in terrestrial reference frames (TRF) is crucial fornumerous scientific and societal applications. To support this effort, the European SpaceAgency (ESA) plans to launch a dedicated space-geodetic mission, Genesis, in 2028. Forthe first time, VLBI will be required to observe and process satellite data, presenting bothnovel challenges and exciting opportunities.In this work, we present preliminary studies supporting the Genesis mission, with a focuson scheduling and simulations. We investigate key aspects such as network visibility underdifferent orbital parameters, specifically examining the impact of orbit altitude (ranging from4000 to 9000 km) and inclination (ranging from 60 to 95 degrees). Our simulations showthat while orbit altitude significantly affects visibility, lower inclinations allow the satellite tobe observed slightly longer by at least two stations. Conversely, higher inclinations result inlonger visibility with a larger network.Additionally, we outline the current status and roadmap for essential VLBI softwaredevelopments, aiming to foster discussions and potential collaborations within thecommunity.