The CMC has been requesting a "CCSDS Reference Architecture" for some time, motivated by the presence of the SCCS-ARD and ADD, which covers the CSS, SLS, SIS, and SEA areas, and the lack of any comparable vision for SOIS, MOIMS, and how they relate to each other or to the rest of CCSDS. Over time CCSDS has created a large set of registries in the SANA, but it has no policy for dealing with common registries nor even for re-use of existing registries. The current approach has created a "wild west" approach where new registries that actually overlap existing ones are proposed without checking or any attempt at alignment.
The RASDS is due for a refresh in satisfaction of the CCSDS 5 year review policy. It is also time for a refresh and expansion of content, to add new viewpoints (services, operations, and physical) and to adopt more modern use of SysML representations, at least in an annex, even if the current PPT "cartoon" style is retained. As a part of analysis of the reference architecture and RASDS projects, and after studying the current CCSDS Glossary, it has become clear that our set of terminology is in need of a clean up and normalization. There are a number of overlaps and disconnects. The Ontology task will do this work and coordinate it with the affected working groups. Related to all of this, one of the key kinds of information artifacts that CCSDS produces today are XML schema. These have grown over the years, but without any overall information model or XML guidelines they are in something of a state of disarray. Because they use different styles and different terminology the ability to re-use them effectively is limited. This project is to provide a set of guidelines and, over time, to work with the affected WGs to bring current spec in line. This is being added to this WG because the work needs a home and the XML SIG, which was created to deal with the issue, has no resources to actually do the job.