CCSDS MO Services, CCSDS SOIS, and SAVOIR for future spacecraft

 
This activity studied three software technologies currently under standardization in the Flight and Ground software domain: CCSDS Mission Operations (MO) Service, the SAVOIR Onboard Software Reference Architecture (OSRA), and CCSDS Spacecraft Onboard Interface Services. The study examined their relationship with each other, potential issues and conflicts, and the ways in which the technologies could be combined into a single harmonised architecture.

Objective(s)

• Consolidation of the user needs and requirements which were driving the development of the three technologies

• Derivation of a single harmonized architecture and analysis of its impact on the operability concept for spacecraft today;

• Develop an executable prototype system and draw lessons to improve the applicability and consistency of the constituent technologies.

Achievements and status
Objectives have been reached. The study showed the possibility to adopt aspects of the proposed harmonised architecture progressively in today’s Ground and Flight software.

Benefits
The benefit of taking an end-to-end view of Software, considering both Ground and Flight segments together is to  improve the global efficiency and the operability of systems.
The distributed nature of a Mission Operation system, with a unifying model, could offer value in achieving this end-to-end view. 

Next steps
Adoption of Mission Operation (MO) Service Specifications across both Ground and Flight segments. A first step should implement MO services on Ground relying on the Packet Utilization Standard (PUS) implemented in the Flight segment.
Cross fertilize MO and OSRA for a global architecture.