Migration of WorldSpace legacy flight dynamics system to focusGEO

This paper presents the process followed in the migration of the flight dynamics system of two geostationary EuroStar 2000+ satellites from the legacy system delivered by the satellite manufacturer that was becoming obsolete to a platform independent, state-of-theart system. Since the satellites had been operational for several years carrying payload traffic it was necessary to ensure a smooth migration between systems. In this paper the authors describe the validation and transition process, as well as some lessons learned.