Module for Event-Driven Operations on Spacecraft (MEDOS)

The Module for Event-Driven Operations on Spacecraft (MEDOS) is a framework for making real-time operational decisions based on detected events from onboard measurements. MEDOS calculates derived parameters, which are physically meaningful and relevant to a mission planner. MEDOS then compares the derived parameters to fuzzy set definitions of typical values as a way of representing the accumulated knowledge associated. MEDOS then fuses the data together to produce a numerical confidence that a given event has occurred. Operational actions are then triggered in response to detected events. MEDOS has been validated using raw flight data from the Magnetospheric Multiscale mission and has been verified on flight hardware for a NASA TRL-6 rating. Because MEDOS utilizes processes well understood and developed by the community in question, and due to the nature of events being presented as a likelihood rather than a definitive, it achieves a level of trust that can enable future mission infusion for operational space missions.