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ENVISAT PDS Status & Performance

ENVISAT PDS Status & Performance. PDS Overall Status and Plans: Points to be addressed. Operation strategy (the Kiruna-only and Kiruna-Svalbard scenario) Encountered difficulties and progress Objectives for the validation Stabilisation of the PDS towards a sustained throughput

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ENVISAT PDS Status & Performance

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  1. ENVISAT PDS Status & Performance

  2. PDS Overall Status and Plans: Points to be addressed • Operation strategy (the Kiruna-only and Kiruna-Svalbard scenario) • Encountered difficulties and progress • Objectives for the validation • Stabilisation of the PDS towards a sustained throughput • Consolidation of the data dissemination • ENVISAT Mission to be operational by end 2002 for a subset of products and services • Objective for the Operations phase • Initial Operations phase • Evolution of the operation scenario (Kiruna-Artemis) • Progressive opening of the User services and phase in of the Users

  3. Industry RGT IECF PDS system (Kiruna Only) scenario) ENVISAT X-band data X-band TM/TC X band data E_PAC UET PDAS I_PAC PDHS-K Kiruna F_PAC D_PAC LRAC PDS FOS UK_PAC PDHS-E S_PAC PDCC Fin Co PAC FOCC NSFS AOIP Aux data

  4. PDS Data Flow 1-LR Level 0 Unconsolidated (Doris, Scia)2- HR Level 0 Unconsolidated3- Browses4- RA2/MWT L 1b Uncosolidated5- LR Level 2 FD Products PACs PDCC PDHS 1-Auxiliary Data2- HR Calibration and Configuration3- Monitoring and Control 1-LR Unconsolidated level 02- ASAR Wave and MR3- MERIS RR Level 2 LRAC 1-Consolidated level 0 (Doris, Sciamachy)2- Consolidated LR level 1b

  5. Kiruna Only Scenario data acquisition • From Launch to 6th of November 2002 • Kiruna Station Data Reception • Receives the complete global mission data dump • 8 orbits are received nominally ( dump of the previous orbit within the Kiruna visibility) • 4 to 5 orbits out of visibility are recorded and dumped in the first two orbits of the morning, together with the nominal preceding orbit • Receives all recorded ASAR HR and MERIS FR • Receives ASAR HR and MERIS FR in direct visibility • Matera Station Operation • Receives ASAR HR and MERIS FR in direct visibility (2 orbits in the morning, 2 orbits in the evening) • Copies the data on D1 tapes, sent to ESRIN • Processing at ESRIN PDHS-E

  6. Kiruna Blind Orbits • 5 consecutive blind orbits (marked 1 to 5) recorded on SSR 1 and 2 • Dump of the recorded data over Kiruna on the first two orbits of Kiruna (first orbit marked 6 ) 6 5 4 3 2 1

  7. Kiruna Only Scenario data processing • Global Mission archiving and processing strategy • Generation of all level 0 (recovery of any missing level 0 offline over night) • Processing of all level 1B and 2 for the nominal 9 to 10 orbits per day • Dissemination of level 0, level 1B and level 2 products to Cal/Val users from PDHS (DDS, FTP server, media) • All level 0 copied on NTP tapes for the LRAC, where they are consolidated, processed to level 1b, and circulated to PACs, where they are further processed to level 2. • Regional Mission archiving and processing Strategy • All ASAR HR and MERIS FR (Kiruna and Matera) processed to level 0 and sent, on NTP tapes, to the relevant PACs (recovery of any missing level 0 offline over night) • Processing of all level 1B at PACs and dissemination to Cal/Val users (media)

  8. Mission Planning • Global Mission defined using the RGT ( Reference Ops Mission generation Tool) • Regional Mission • ASAR operation and on request processing defined by the Cal/Val coordinator via a USF script • MERIS operation and on request processing defined by the Cal/Val coordinator via a script • Background mission defined by the Mission Manager and entered via the USF • Additional PR images requested by ESRIN via the USF • All above nominally defined one week ahead of its execution schedule

  9. Problems Encountered • Lack of robustness of the PDS facilities; • Missing/incomplete functionalities (e.g. concatenation of product slices to make complete instrument operation segments, incomplete follow up and reporting of orders, recovery of failed orders, etc…); • Misfit between the installed Kiruna configuration and the Kiruna only scenario • Very poor reporting capabilities • Irregular production throughput at PDHS and LRAC • Weakness of the data dissemination scenario mainly linked to the Archiving Facility architecture and the dissemination scenario To be noted: • The Kiruna Only scenario is much more demanding for this station than any future nominal scenario • Testing of the operation, pre-launch, was very much constrained by the limited set of satellite simulated data available ( 2 orbits)

  10. Corrective Actions Implemented • PDCC ( mission planning): problems circumvented and planning loop stabilised • PDHS configuration substantially upgraded ( processing facility, archiving facility) • Dissemination scenario (electronic and media) optimised in view of the new configuration, in particular to minimise tape access • Procedures and scripts put in place to recover failures and missing products • Instrument Processors corrected to reflect current Cal/Val status and • Kiruna – Svalbard scenario implemented and active on 6th of November 2002

  11. X-band data Svalbard ISPs Industry RGT IECF PDS system (Kiruna-Svalbard) scenario) ENVISAT X-band data X-band TM/TC X band data E_PAC UET PDAS I_PAC PDHS-K Kiruna F_PAC D_PAC LRAC PDS FOS UK_PAC PDHS-E S_PAC PDCC Fin Co PAC FOCC NSFS AOIP Aux data

  12. Kiruna-Svalbard Scenario data processing • Global Mission archiving and processing strategy • Generation of all level 0, 1B and 2 for the orbits recovered in Kiruna (9/10) within 3 hours from sensing (recovery plan during the night) • Generation ay PDHS-E of all level 0, 1B and 2 for the orbits recovered in Svalbard (4/5), after transmission to ESRIN via DDS, i.e. within 12 hours from sensing • Dissemination of level 0, level 1B and level 2 products to Cal/Val users from PDHS-K (DDS, FTP server, media) and PDHS-E (FTP server, media) • All level 0 copied on NTP tapes for the LRAC, where they are consolidated, processed to level 1b, and circulated to PACs, where they are processed to level 2 (1 week delay wrt Kiruna only scenario). • Regional Mission archiving and processing Strategy • All ASAR HR and MERIS FR processed to level 0 and sent, on NTP tapes, to the relevant PACs (recovery of any missing level 0 offline over night). Kiruna within 3 hours, Matera within 5 days, Svalbard within 2 weeks (sent to ESRIN via DLT) • Processing of all level 1B at PACs and dissemination to Cal/Val users (media)

  13. Data Distribution Current Status • Global Mission Data Products • Meteo products on FTP server • Media copying at PDHS-K of level 1B and 2 products for distribution to Cal/Val PIs • Product dissemination via DDS and FTP server • Electronic dissemination enhanced through upgrade of disk space, change in subscription strategy and data-driven implementation for systematic dissemination • Regional Mission Data Products • ASAR and MERIS FR images produced at PACs • NRT production at PDHS-K has started

  14. Acquisition Planning • Operational Status at 1st Dec. • Operated in manual mode  no planning on week-ends & holidays • ASAR/MERIS HR planned as per user requests (Cal/Val, PIs, DEs), 20% rejections of Cat1 requests due to higher priority Cal/Val requests • Background Regional Mission progressively implemented as per HLOP requirements • All confirmed requests are scheduled – no deletion after confirmation of planning • Performances • Nominal planning accepted up to 10 working days before acquisition • Late planning accepted up to 4 working days before acquisition • Emergency planning only exceptionally up to 2 working days • No On-call service during the weekends • Acquisition reporting required to confirm successful acquisition Operations Responsible: S. Jutz

  15. Production Planning • Operational Status at 1st Dec. • Operated in semi-manual mode  no delta-plans on week-ends & bank holidays • Generating plans for ESA Stations (PDHS-K/E, PDAS-S/F, LRAC), PACs (all), Foreign Stations (Tromsø, Gatineau, Prince Albert) • Station reporting disabled due to excessive load on the GSP • Performances • Fragile database design causes inconsistency with in avg. 1 crash event / month • Production plans generation too long: 4.5 hours in average (PDHS-K: avg. 1.5 hours)

  16. Catalogues • Status at 1st December • Online catalogues opened for browse of HR data. Other instrument catalogues and online ordering not activated until data quality and data handling chain sufficiently robust to serve demand. • EOLI-Envisat (MUIS) online catalogue http://muis-env.esrin.esa.it opened to all users since Oct. 2002 for browse of HR data, performance good, does not yet have ordering interface • DESCW offline catalogue http://earth.esa.int/descw made available to all users in Oct. 2002.

  17. Envisat on-line catalogue (open since mid-October)

  18. MERIS Japan – 5 Dec. 2002 ASAR WS Mekong River – 26 Oct. 2002 ASAR IM Envisat on-line catalogue (browse images) AATSR

  19. Acquisition performance • PDHS-K (Kiruna, X-band) • PDAS-S (Svalbard, X-band) • PDAS-F (Matera, X-band)

  20. Production performance ( (*) (*) does not take into account satellite unavailability

  21. Circulation and dissemination performance • In the last six month, 1600 tapes (NTP) circulated between the various centers, corresponding to 185000 products • In the last six month, 150000 products disseminated to users by media • In the last two weeks, 25000 products distributed to users via electronic link, (12000 via DDS, 13000 via ftp)

  22. Maintenance performance • On 1st of January 2002, 400 open SPRs • On 1st of December 2002, 300 open SPRs • During that period, 700 new SPRs opened. • Reception and installation of 59 system deliveries corresponding to 106 facilities, and 2000 installations since launch

  23. Future Plans • Upgrade of the PDCC and PDHS-E HW • PDCC WS (racked) • PDHS-E WS (racked) • PDHS-E processing nodes (to cope with Artemis scenario) • All FEPS (obsolete HW, no further maintenance) • Upgrade of the PDS to cope with reprocessing, in particular the dissemination to users • Kiruna-Artemis scenario to be tested mid February 2002, operational in March 2003

  24. DRS Ka-band data Ka-band data DRS TM/TC X-band data Svalbard ISPs DRS Mission Control center Industry RGT IECF PDS system (Kiruna-Artemis) scenario) ENVISAT X-band data X-band TM/TC X band data E_PAC UET PDAS I_PAC PDHS-K Kiruna F_PAC D_PAC LRAC PDS FOS UK_PAC PDHS-E S_PAC PDCC Fin Co PAC FOCC NSFS AOIP Aux data

  25. Services to non-Cal/Val users • Beyond Commissiong Phase services to Cal/Val teams, progressive access to Envisat products and services to non-Cal/Val users: • started at mid-September, • by staggered groups of users (essentially AO projects), • supported by order desk and help desk, • with reduced set of products and services: • ASAR Image Mode and Wide Swath Mode level 1b products, • MERIS Full Resolution level 1b products, • limited amount of products by projects. • Progressive access also granted to Distributing Entities in order to smooth the transition to a fully operational commercial distribution.

  26. Conclusion • Some of the PDS facilities still require consolidation • Substantial progress on consolidating the planning, production and dissemination of products since the Svalbard scenario • PDS platform needs to be upgraded to support reprocessing • Transition to Initial Operations phase following ORR1 (gradual phase-in of non cal/val projects and commercial users) • ORR 2 and full operations expected mid-2003

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