Projects

Overview
Project Title	Navigation Composite Message
Approval	Approved
Document Number	TBD
Charter	2.02 Navigation Working Group
Document Type	Blue
Description of Document	Since the publication of the first NavWG Recommended Standard in 2004 (the Orbit Data Messages V.1), progress in developing international standards for use in space flight dynamics operations has been regular. New areas of standardization emerged every year or two between 2007 and 2024. Yet this progress has been hampered by challenges stemming from the interrelated concepts of inheritance, duplication, and consistency. Attempts to address these challenges have consumed many of the NavWG resources (time and effort) over the years and have led to the notion of a "universal, modular message". The concept of this modular message has been a discussion topic within the NavWG since Fall 2014. Now that several outstanding projects have been published, this modularity concept can be addressed. The "Navigation Composite Message" (NCM) is proposed as a solution to some of the challenges that have been faced by the Working Group over the years.
Applicable Patents	There are no patent issues for this technology that are known by the CCSDS community
Patent Comments	N/A
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS	This concept involves a selective composite of features found in several existing CCSDS NavWG standards, each of which has been reasonably widely implemented and for which no similar standards are known.
Resources
Book Editor	NASA
Book Editor Resources	20 work months
Prototype 1	NASA
Prototype 1 Resources	12 work months
Prototype 2	ESA
Prototype 2 Resources	12 work months
Prototype 3
Prototype 3 Resources
Contribute
Monitor Only
Resource Comments	See Concept Paper at https://cwe.ccsds.org/moims/docs/MOIMS-NAV/Draft%20Documents/Concept%20Papers/NCM/navigation-composite-message-concept-paper-changesaccepted-20240522.pdf

Schedule

Legend for Schedule Milestones = Required for Orange Books = Required for Green Books = Required for Magenta Books = Required for Blue Books Note - Red Books are Draft Blue/Magenta Books Schedule Milestones	Original Completion Date (Date in M/D/YYYY format.)	Comments (Date in M/D/YYYY format.)
Project Approved	6/30/2024
Project Start Date	8/1/2024
Internal WG Review
First Draft Circulated to WG	10/31/2024
First Draft Comments Due	11/30/2024
Second draft circulated to WG	1/2/2026
Second Draft Comments Due	2/2/2026
Final WB Submitted to AD for Further Processing	2/15/2026
External Milestones
Secretariat Document Processing	4/15/2026
First Agency Review	6/15/2026
RID Resolution	7/1/2026
Secretariat Document Processing 2	9/1/2026
Final Agency Review	11/1/2026
RID Resolution	12/1/2026
First Prototype Development	6/30/2027
Second Prototype Development	6/30/2027
CMC Approval	8/31/2027
Total Time to Complete (in months)	36