Projects

Overview
Project Title	Pseudo-Noise (PN) ranging systems
Approval
Document Number
Charter	5.06 Ranging Working Group
Document Type	Blue
Description of Document	The purpose of this document is to provide a Recommendation for Space Data System Standards in the area of transparent and regenerative Pseudo-Noise (PN) ranging systems. The PN ranging system is used to measure the round-trip light time between a ground station and a spacecraft. Regenerative ranging is primarily relevant for low Signal-to-Noise Ratio (SNR) cases like those seen in deep space missions; transparent ranging is more suitable for high SNR cases or when high accuracy ranging is not required. This Recommended Standard (414.1) defines both transparent and regenerative PN ranging systems for non data relay satellite users. The specification for PN code components and generation, on-board spacecraft regenerative/transparent processing, ground station processing, and uplink and downlink signal modulation are defined in this document.
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Patent Comments
Survey of Similar Standards Documents or Projects Undertaken in Other Bodies and elsewhere in CCSDS
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Prototype 1
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Prototype 2
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Prototype 3
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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.)	Estimated Completion Date (Date in M/D/YYYY format.)	Actual Completion Date (Date in M/D/YYYY format.)	Comments (Date in M/D/YYYY format.)
Project Approved	6/15/2004	6/15/2004	6/15/2004
Project Start Date
Internal WG Review
First Draft Circulated to WG	7/15/2005	7/15/2005	7/15/2005
First Draft Comments Due	10/15/2005	10/15/2005	10/15/2005
Second draft circulated to WG	3/15/2006	3/15/2006	3/15/2006
Second Draft Comments Due	10/15/2006	10/15/2006	10/15/2006
Final WB Submitted to AD for Further Processing	6/30/2008	6/30/2008	6/30/2008
External Milestones
Secretariat Document Processing	8/15/2008	8/15/2008	8/15/2008
First Agency Review	9/15/2008	9/15/2008	9/15/2008
RID Resolution	10/30/2008	10/30/2008	10/30/2008
Secretariat Document Processing 2	12/15/2008	12/15/2008
Final Agency Review	1/15/2009	1/15/2009
RID Resolution	3/15/2009	3/15/2009
First Prototype Development	3/15/2009	3/15/2009
Second Prototype Development	3/15/2009	3/15/2009
CMC Approval	5/15/2009	5/15/2009	3/1/2009
Total Time to Complete (in months)	1,291	1,291