1. 1 23 January 2007 Space Link Services Area report to CESG/CMC Colorado Springs, USA, 24 January 2007 J.L. Gerner / G. Moury

2. 2 23 January 2007 SLS AREA REPORT CONTENTS A.CURRENTLY ACTIVE WGs AND BOFs WITHIN AREA B.SUMMARY TECHNICAL STATUS OF EACH WG & BOF C.INTRA & CROSS-AREA TECHNICAL ISSUES D.OTHER ISSUE AND CONCERNS E.PROPOSED AREA RESOLUTIONS / ACTION ITEMS

3. 3 23 January 2007 1.SLS-RFM - RF & Modulation BOF 2.SLS-C&S – Coding & Synchronization WG 3.SLS-DC – Data Compression WG & Multi & Hyperspectral Data Compression BOF 4.SLS-SLP – Space Link Protocols WG 5.SLS-TCC – Telecommand Channel Coding WG - idle 6.SLS-RNG – Ranging WG 7.SLS-PROX – Proximity Links-1 Build-2 WG - closed 8.SLS-HDRU – High Data Rate Uplink WG 9.SLS-LEC - Long Erasure Codes BOF A.LIST OF CURRENT WGs AND BOFs WITHIN AREA SLS AREA REPORT

4. 4 23 January 2007 SLS Attendance (1/3) SLS AREA REPORT

5. 5 23 January 2007 SLS Attendance (2/3) SLS AREA REPORT

6. 6 23 January 2007 SLS Attendance (3/3) SLS AREA REPORT

7. 7 23 January 2007 B.SUMMARY TECHNICAL STATUS 1.RFM WG Goal: Recommendations on 22 (the band near 22 GHz), 26 and 32 GHz modulation, and on 2 GHz modulation for Moon missions; Revision of 2.4.17A, and editorial revision 2.4.17B and 2.4.18, and draft companion recommendations; Editorial revision of 413.0-G; Assessment of amount of work needed and affected sections for a revised 412.0-G. Working Group Status: Active Working Group Summary Situation: status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

8. 8 23 January 2007 RFM WG (cont’d) Working Group Summary progress: 32 GHz modulation recommendation agreed by WG RES1 to submit new recommendation 2.4.20B for agency review Revised recommendation on phase/amplitude imbalance agreed by WG RES2 to submit revised recommendation 2.4.12A and 2.4.12B for agency review Revised recommendation on 34/32 GHz turn-around ratios agreed by WG RES3 to submit revised recommendation 2.6.8B for agency review 413.0-G reviewed together with recommendations 2.4.17A/B and 2.4.18: way forward and actions agreed for next meeting 412.0-G not yet reviewed by WG members SLS AREA REPORT

9. 9 23 January 2007 2.SLS-C&S: Coding & Synchronization WG (1 of 3) Goal : - Issue TM Channel Coding GB - Issue new codes experimental (orange) book(s) Working Group Status: Active Working Group Summary Situation: Working Group Summary progress :  See next slide status:OKCAUTIONPROBLEM comment:X SLS AREA REPORT

10. 10 23 January 2007 SLS-C&S: Coding & Synchronization WG (2 of 3) Working Group Summary progress :  Telemetry Channel Coding Green Book CCSDS 130.1-G-1: published.  Orange Book on LDPC Codes by GSFC & JPL (merged version) :  Issue 1 published.  Updated version presented at this meeting for update.  Orange Book on ESA SCCC: Updated Draft provided.  CNES Orange Book for Telemetry Frames over DVB-S2. Updated Draft provided  General: The WG continues applying collaborative attitude on Orange Books without implying consensus  Publication of ESA+CNES+NASA/issue2 Books by April 2007 or earlier. SLS AREA REPORT

11. 11 23 January 2007 SLS-C&S: Coding & Synchronization WG (3 of 3) Working Group Summary progress : Joint activity performed with SLP for CRC clarification issues (shared area: Coding expertise needed for Books under SLP responsibility). Remarks: CRC is used in several books (e.g. TC, TM, Prox-1).  Agreement reached about inserting figures (i.e. Logical Diagrams) into the books. Draft figures produced for discussion (eventual e-mail exchange foreseen).  ESA proposal presented and discussed. Consensus reached on approach to improve CRC figures.  Action: ESA to propose Technical Corrigendum to CRC-16 & CRC-32.  Next step (prior to next meeting): Ensure consistency among all blue books using CRC and issue technical corrigenda.  Further work: The material on CRC issues on e.g. techniques, performances, reference code, etc. be collected for updating (CRC parts of) TM/TC Green Books. SLS AREA REPORT

12. 12 23 January 2007 3.Data Compression WG Goal: Specify an image compression algorithm fulfilling identified space mission requirements Develop a subsequent recommendation together with the supporting information (performances, usage, reference software, etc …). Working Group Status: Active X Idle ____ Working Group Summary Situation: status:OKCAUTIONPROBLEM comment:Nearly complete. SLS AREA REPORT

13. 13 23 January 2007 Data compression WG (cont’d) Working Group Summary progress: Finalized Green Book draft. Submitted for publication Feb 07. Reviewed status of simulation softwares. Agreed to list multiple available software implementations on WG web site with a link from CCSDS web site blue book page. SLS AREA REPORT

14. 14 23 January 2007 Data compression WG (cont’d) Problems and Issues: None SLS AREA REPORT

15. 15 23 January 2007 Data compression WG (cont’d) Planning : GREEN BOOK to be submitted for SLS approval end of January 2007. Upload verification test data to WG web site February 2007. Disband WG upon completion of all AI SLS AREA REPORT

16. 16 23 January 2007 Data compression WG (con’t) Resolutions : Res7: Request SLS AD to submit GB to CESG polling upon completion of the GB (end Feb 2007); Res8: Dissolve the present working group pending approval and publication of Green Book. SLS AREA REPORT

17. 17 23 January 2007 Multispectral/Hyperspectral Data Compression BOF Goals: Establish Charter for Multi-/Hyper-spectral Data Compression Working Group; Establish milestones and schedules for Multi-/Hyper-spectral Data Compression Working Group; Request and gain support from participating agencies for Multi- /Hyper-spectral Data Compression Working Group. BOF Status: Completed. BOF Summary Situation: status:OKCAUTIONPROBLEM comment:Goals achieved. SLS AREA REPORT

18. 18 23 January 2007 Multi and Hyperspectral Data compression BOF (cont’d) BOF Summary progress: Drafted charter for new Multispectral and Hyperspectral Data Compression (MHDC) Working Group New member: EADS Astrium (Martin Plintovic) Reviewed agency needs to consolidate common requirements matrix Outlined work plan BOF requests SLS Area Director to create MHDC Working Group according to proposed charter SLS AREA REPORT

19. 19 23 January 2007 Multi and Hyperspectral Data compression BOF (cont’d) Problems and Issues: None SLS AREA REPORT

20. 20 23 January 2007 Multi and Hyperspectral Data compression BOF (cont’d) Planning : Establish requirements matrix - Fall 2007 Establish selection criteria - Fall 2007 Establish test data sets - Fall 2007 Identify candidate approaches - Fall 2007 Evaluate candidate approaches - May 2008 Select approach for standardization - October 2008 White Book - January 2009 Red Book - May 2009 Reference software & compliance data sets - May 2009 Blue Book - October 2009 Green Book - October 2009 SLS AREA REPORT

21. 21 23 January 2007 Multi and Hyperspectral Data compression BOF (cont’d) Resolutions : Request SLS Area Director to create new Multispectral and Hyperspectral Data Compression (MHDC) Working Group according to draft charter. Request SLS Area Director to approve Aaron Kiely as new Working Group chair. SLS AREA REPORT

22. 22 23 January 2007 Multi and Hyperspectral Data compression BOF (cont’d) Next Meeting Objectives Select test data sets for algorithm evaluation Finalize requirements matrix Establish performance criteria for algorithm evaluation Establish candidate approaches SLS AREA REPORT

23. 23 23 January 2007 4.SLS-SLP WG Goal: Progress Overview of Space Communication GB to next GB version. Progress Space Data Link Protocol draft GB to a Green book. Progress Space Packet Protocol draft GB to a Green book. Progress Proximity-1 Space Link Protocol draft GB to Green book. WG Status: Active X Idle ____ WG Summary Situation: Good Progress status:OKCAUTIONPROBLEM comment:Good progress SLS AREA REPORT

24. 24 23 January 2007 SLS-SLP WG (cnt’d) SLS-SLP Summary progress: All but 5 of the (ESA) open questions were answered concerning: Draft Space Data Link Protocol GB Version 1 of Space Communications protocol GB Draft Space Packet Protocol GB However those 5 remaining issues are desires of ESA concerning the non-standard use of ISO defined terminology. A response was generated (to ESA) concerning the final resolution of these desirements Provision will be made for TBD statements in the Space Packet Protocol GB for inclusion of the old TM/TC definition of APID The RID against the Prox-1 GB from the SIS area director concerning how to express the performance of the new frame selection rules in the Prox-1 Data link layer blue book was explained and the resolution to this RID was accepted by the author. A General Discussion of the Performance Analysis of the new Frame selection rules will be supplied in this book before release SLS AREA REPORT

25. 25 23 January 2007 SLS-SLP WG (cnt’d) WG Summary progress concerning the APID Definition: Concerning the definition of the APID: 1. ESA (C&S WG chair) took the action to write a pink sheet to reestablish the old (non-LDP) TM/TC definition of the APID. 2. ESA (C&S WG chair) took the action to write a pink sheet to optionally add the CRC-16 to the space packet. ESA will circulate the draft pink sheets for #1 and #2 to the following joint WG members representing their member agencies for concurrence via email and eventual submission to Agency Review: a. Matt Cosby – BNSC, b. G.P. Calzolari – ESA, c. T. Yamada – JAXA, d. Greg Kazz - NASA/JPL, e. Tim Ray - NASA/GSFC, f. Gilles Moury - CNES SLS AREA REPORT

26. 26 23 January 2007 3. Takahiro Yamada (JAXA) is assigned the action of investigating modifications to the Space packet Secondary Header per ESA request 4. Chris Taylor (ESA) is assigned the action of identifying any CFDP APID changes or as an alternative reinforcing the definition of the Space Packet type field. SLS-SLP WG (cnt’d) WG Summary progress concerning the APID Definition:

27. 27 23 January 2007 SLS-SLP WG (cnt’d) Problems and Issues: See cross-area issues SLS AREA REPORT

28. 28 23 January 2007 SLS-SLP WG (cnt’d) Planning : Provide final copies of these Green books to the CCSDS Secretariat within 2 months: Overview of Space Communication GB – Takahiro Yamada Space Data Link Protocol GB – Takahiro Yamada Space Packet Protocol GB – Takahiro Yamada Proximity-1 Space Link Protocol – Greg Kazz The SLP WG will be set idle upon publication of these 4 GBs and reactivated as soon as firm requirements from Mars BOF, Cislunar WG and Wireless BOF as well as from other sources (e.g. Space wireless workshop, agencies programmes, …) are available. SLS AREA REPORT

29. 29 23 January 2007 SLS-SLP WG (cnt’d) Resolutions : Res4 to request the Prox-1 GB be published as Version 1.0 Greenbook Res5 to request the a) Space Data Link protocol and b) Space Data Communications Protocol be published as a) new green book and as b) an updated GB Res6 to request the Space Packet GB be published as a new Green book SLS AREA REPORT

30. 30 23 January 2007 5.SLS-TCC: Telecommand Channel Coding WG (1 of 2) Goal: Development of a Telecommand Channel Coding Green Book. Working Group Status: Suspended. Working Group Summary Situation: Working Group Summary progress :  See next slide status:OKCAUTIONPROBLEM comment: Task Accomplished SLS AREA REPORT

31. 31 23 January 2007 SLS-TCC: Telecommand Channel Coding WG (2 of 2) Working Group Summary progress:  Green Book CCSDS 230.1-G-1 : published.  Technical Corrigendum to BB 231: published.  In Colorado the WG supported the High Rate Uplink (HRU) WG Meeting Working Group Future:  WG Members are expected to continue contributing/monitoring the HRU work.  The WG will reactivate based on input task by HRU WG. SLS AREA REPORT

32. 32 23 January 2007 6.RNG WG Goal: issue blue book on novel ranging techniques Working Group Status: Active Working Group Summary Situation: status:OKCAUTIONPROBLEM comment:Good progress AREA REPORT

33. 33 23 January 2007 RNG WG (cnt’d) Working Group Summary progress: Current status: PN Ranging White Issue 2 book revised Out of the 7 codes from previous issue, only 2 remain in present release, selected for two different regenerative ranging scenarios Discussion continues on two codes for transparent ranging Missing transparent simulation as well as hardware test results expected by July 2007 Future work/charter: Future work continues as per charter – 3 months delay needed due to delay with bread-boarding contract; Red book new due date October 2007 RNG WG charter updated (3 months’ delay) SLS AREA REPORT

34. 34 23 January 2007 8.High Rate Uplink WG Goal: Address the high rate uplink requirements as requested by the IOAG. Provide technical recommendations in the areas of RF&Modulation, Coding, and Link Layer protocols in support of the Lunar Exploration Missions and extension to deep space. WG Status: Active X Idle ____ WG Summary Situation: No definition of CCSDS HRU Requirements. status:OKCAUTIONPROBLEM comment: No CCSDS requirements defined SLS AREA REPORT

35. 35 23 January 2007 HRU WG (cnt’d) WG Summary progress: NASA presented HRU related “requirements” from Project Constellation. From a CCSDS perspective, these look more like solutions. Fabrizio Pollara (NASA/JPL) provided an update (additional performance data) on the three uplink coding scenarios presented at the Rome meeting. SLS AREA REPORT

36. 36 23 January 2007 High Rate Uplink WG (cnt’d) Problems and Issues: Each Agency needs to present its mission scenarios associated with high rate uplinks NASA claims it has these scenarios but cannot yet share them with other space agencies until management approval is given. ESA will investigate whether preliminary scenarios are available from the AURORA programme. A set of CCSDS high rate uplink related requirements has yet to be defined. The deadline given to the WG of End of Year 2007 for a blue book is deemed very hard to achieve given these constraints. SLS AREA REPORT

37. 37 23 January 2007 High Rate Uplink WG (cnt’d) Planning : Action item on each participating agency: CNES, ESA, NASA, JAXA to circulate its mission scenarios concerning high rate uplink by April 2007 Res9: IOAG to provide mission/systems requirements for High Rate Uplink more detailed than those available with IOAG Res 8.7.1. SLS AREA REPORT

38. 38 23 January 2007 9.SLS-LEC: Long Erasure Codes (‘tornado codes’) BOF (1 of 2) Goal: Make, if conclusive, a proposal for the creation of a WG on application of long erasure-correction codes. BOF Status : Active (extended till end of 2007) BOF Summary Situation: Working Group Summary progress:  NASA and ESA reports presented. Technical progress positive.  Future: see next slide status:OKCAUTIONPROBLEM comment: work in progress SLS AREA REPORT

39. 39 23 January 2007 SLS-LEC: Long Erasure Codes (‘tornado codes’) BOF (2 of 2) Working Group Summary progress:  Difficulties in having right perception by other Areas felt. This is an important issue since the implied coding solutions would penetrate also into higher layers data structures (e.g. post –pass recovery of “erased” frames or packets). Confirmed.  The targets below for better inter-area discussion shall be finalized in the Darmstadt meeting (October 2007):  Production of profiles addressing:  Scenario with limited number of erasures;  Scenario with High number of erasures;  Intermediate scenario.  Design, for the profiles above, of LEC solutions addressing both:  Approach at Frame level (i.e. constant length input data)  Approach at (Space/CFDP) Packet level (i.e. variable length input data). SLS AREA REPORT

40. 40 23 January 2007 Cross-area technical issue A PICS (Protocol Implementation Conformance Statement) was requested by the SIS area Mars BOF to be defined for the 3 books of Prox-1, as identified by the Mars BOF. SLS proposes that SLS-SLP WG adopts this task as an update to the charter. Lunar/Mars missions. New needs may not be covered by Prox-1. New needs are to be identified. Upgrade of Prox-1 (?), development of Prox-2 (?). Inter-areas coordination to be put in place with SIS (Cislunar WG, Mars BOF) and SOIS (Wireless BOF). Space Packet Protocol: part of SIS or SLS? SLS AREA REPORT

41. 41 23 January 2007 Other issues & concerns None SLS AREA REPORT

42. 42 23 January 2007 Proposed area resolutions & action items (1/2) Res1 to submit new recommendation 2.4.20B for agency review Res2 to submit revised recommendation 2.4.12A and 2.4.12B for agency review Res3 to submit revised recommendation 2.6.8B for agency review Res4 to request the Prox-1 GB be published as Version 1.0 Greenbook Res5 to request the a) Space Data Link protocol and b) Space Data Communications Protocol be published as a) new green book and as b) an updated GB Res6 to request the Space Packet GB be published as a new Green book Upon completion of the Data Compression GB (end Feb 07) Res7 to request the Data Compression GB be published as a new Green book Upon publication of the Data Compression GB Res8 to request the Data Compression WG be dissolved SLS AREA REPORT

43. 43 23 January 2007 Proposed area resolutions & action items (2/2) Res9: IOAG to provide mission/systems requirements for High Rate Uplink more detailed than those available with IOAG Res 8.7.1. SLS AREA REPORT

44. 44 23 January 2007 SLS AREA REPORT Thank You