During these years, novel Distributed Satellite Systems (DSS) have disrupted traditional space segment paradigms. In particular, Federated Satellite Systems and fractionated spacecraft have explored the benefits of interacting satellite networks and are envisioned to improve Earth observation performance while maximizing mission utility. Inter-Satellite Communications capabilities and spacecraft coordination mechanisms are cornerstone aspects that need be designed and evaluated to achieve many of the envisioned DSS characteristics (e.g. in-orbit data services, autonomous mission planning). Given the system complexity, heterogeneity and large-scale, the design of these critical features has to be grounded on simulation-based frameworks. Consequently, this paper presents the design of a highly modular and reconfigurable software that enables the emulation of DSS. The paper motivates the design and discusses its adaptability to future user needs.

Peer Reviewed