SB-SAT- Persistent data communication LEO spacecraft via the Inmarsat-4 GEO constellation

This paper provides a high level overview of the new SB-SAT technology which is being developed. The terminal and service capabilities deliver a “disruptive” technology which is a paradigm shift in the way data is relayed to and from LEO spacecraft. It will allow the deployment of smaller and cheaper LEO missions that require frequent communication contacts in the near-earth environment. Future variants of the system will allow deeper penetration of the product onto the market for LEO data transfer and once deployed this system should revolutionize many aspects of LEO satellite operations and management.