Projects

Overview
Project Title	RF & Modulation Recommendations for Data Relay and Intersatellite Links (401 Part 2)
Approval	Draft
Document Number	401.1
Charter	5.01 RF and Modulation Working Group
Document Type	Blue
Description of Document	This document is the restructuring of the 401.0 RFM Blue Book, which was originally envisioned as consistenting of two parts. Part 1 is the existing 401.0 book with physical layer recommendations for earth stations and spacecraft (uplink and downlink). This new 401.1 book will be Part 2, which covers physical layer recommendations for data relay and intersatellite (space-to-space) links. The existing recommendations related to space-to-space links in the 401.0 Blue Book will be moved into the new 401.1 Blue Book.
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	This project is a restructuring of existing 401.0 recommendations into a separate book covering recommendations for data relay and intersatellite links. Thus there is no conflict with the 401.0 Book. There is also the 415.1 Blue Book on CDMA for data relay satellites, but it only addresses a specific protocol and will not conflict with the new 401.1 standard which is intended for general physical layer recommendations for space-to-space links.
Resources
Book Editor	NASA
Book Editor Resources	0.1 FTE
Prototype 1	Not Required
Prototype 1 Resources	N/A (this project only involves restructuring of already developed recommendations from the 401.0 Blue Book)
Prototype 2	Not Required
Prototype 2 Resources	N/A (this project only involves restructuring of already developed recommendations from the 401.0 Blue Book)
Prototype 3	Not Required
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	7/1/2024
Project Start Date	7/1/2024
Internal WG Review
First Draft Circulated to WG	10/15/2024
First Draft Comments Due	11/15/2024
Second draft circulated to WG	3/14/2025
Second Draft Comments Due	4/14/2025
Final WB Submitted to AD for Further Processing	5/14/2025
External Milestones
Secretariat Document Processing	7/14/2025
First Agency Review
RID Resolution
Secretariat Document Processing 2
Final Agency Review
RID Resolution
First Prototype Development
Second Prototype Development
CMC Approval	9/1/2025
Total Time to Complete (in months)	14