Projects

Overview
Project Title	Time Service Architecture (Magenta Book)
Approval	Draft
Document Number	CWE Doc. TBD
Charter	1.07 Time Management Working Group
Document Type	Magenta
Description of Document	4) Produce a Magenta Book that defines recommended procedures for using the defined normative approaches for time correlarion and time synchronization, in space and on the ground, to produce the desired outcomes for cross supported mission and multi-mission time management. This spec is to define a reference architecture for time services that is suitable for doing time correlation and time synchronization across standard space links or SSI network (DTN or IP) space network connections. It must take into account both round trip light time delays and, potentially, relativistic effects. It must be robust in the face of delays and disconnections.
Applicable Patents	There are no patent issues for this technology that are known by the CCSDS community
Patent Comments
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS	There are common spacecraft / mission practices for time correlation, but there is not a defined standards for this. There is a Network Time Protocol (NTP) defined for the Internet, but it is not suitable for use in space.
Resources
Book Editor
Book Editor Resources
Prototype 1
Prototype 1 Resources
Prototype 2
Prototype 2 Resources
Prototype 3
Prototype 3 Resources
Contribute
Monitor Only
Resource Comments

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	10/1/2018
Project Start Date
Internal WG Review
First Draft Circulated to WG
First Draft Comments Due
Second draft circulated to WG
Second Draft Comments Due
Final WB Submitted to AD for Further Processing
External Milestones
Secretariat Document Processing
First Agency Review
RID Resolution
Secretariat Document Processing 2
Final Agency Review
RID Resolution
First Prototype Development
Second Prototype Development
CMC Approval	5/30/2022
Total Time to Complete (in months)	1,445