ENVISAT PDS Status & Performance Envisat Validation Workshop

ENVISAT PDS Status & Performance Envisat Validation Workshop

ENVISAT PDS Status & Performance Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 1 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 2 PDS system (Kiruna Only) scenario)

ENVISAT X-band data X-band TM/TC X band data E_PAC UET PDAS I_PAC F_PAC D_PAC UK_PAC S_PAC Fin Co PAC NSFS PDHS-K LRAC PDHS-E Kiruna PDS FOS PDCC Industry FOCC RGT IECF Envisat Validation Workshop 9 Decembre 2002 @ Esrin AOIP

Aux data Page 3 PDS Data Flow 1-LR Level 0 Unconsolidated (Doris, Scia) 2- HR Level 0 Unconsolidated 3- Browses 4- RA2/MWT L 1b Uncosolidated 5- LR Level 2 FD Products PDCC PDHS 1-LR Unconsolidated level 0 2- ASAR Wave and MR 3- MERIS RR Level 2 PACs 1-Auxiliary Data 2- HR Calibration and Configuration 3- Monitoring and Control LRAC Envisat Validation Workshop 9 Decembre 2002 @ Esrin 1-Consolidated level 0 (Doris, Sciamachy) 2- Consolidated LR level 1b Page 4 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 5 Kiruna Blind Orbits 5 consecutive blind orbits (marked 1 to 5) recorded on SSR 1 and 2 6 5 Dump of the recorded data over Kiruna on the first two orbits of Kiruna (first orbit

marked 6 ) 4 3 2 Envisat Validation Workshop 9 Decembre 2002 @ Esrin 1 Page 6 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) Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 7 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 8 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) Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 9 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 10 PDS system (Kiruna-Svalbard) scenario) ENVISAT X-band data X-band TM/TC X band data E_PAC UET X-band data PDAS I_PAC F_PAC D_PAC UK_PAC S_PAC Fin Co PAC NSFS PDHS-K LRAC PDHS-E Kiruna PDS

ISPs PDCC Industry Svalbard FOS FOCC RGT IECF Envisat Validation Workshop 9 Decembre 2002 @ Esrin AOIP Aux data Page 11 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) Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 12 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 13 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin

Page 14 Operations Responsible: S. Jutz Production Planning Operational Status at 1st Dec. Operated in semi-manual mode no delta-plans on weekends & bank holidays Generating plans for ESA Stations (PDHS-K/E, PDAS-S/F, LRAC), PACs (all), Foreign Stations (Troms, 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) Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 15 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://muisenv.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. Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 16 Envisat on-line catalogue Envisat Validation Workshop 9 Decembre 2002 @ Esrin (open since mid-October) Page 17 Envisat on-line catalogue Japan 5 Dec. 2002 ASAR WS (browse images) MERIS Mekong River 26 Oct. 2002 ASAR IM Envisat Validation Workshop 9 Decembre 2002 @ Esrin AATSR Page 18 Acquisition performance

PDHS-K (Kiruna, X-band) Transmitted Acquired Success rate HR 1618 1605 99.20% LR 2742 2729 99.53% Transmitted Acquired Success rate HR 15 14 93.33%

LR 36 34 94.44% PDAS-S (Svalbard, X-band) PDAS-F (Matera, X-band) Transmitted Acquired Success rate HR 521 517 99.23% LR (MERIS FR) 292 291 99.66% Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 19 Production performance ( I nstrument ASA ASA ASA ATS

ATS ATS DOR GOM MER MER MER MI P MI P MI P MWR RA2 RA2 RA2 SCI SCI SCI TLM Level 0 1 2 0 1 2 0 0 0 1 2 0 1 2 0 0 1 2 0 1 2 0

Requested Sensing Requested Sensing Actual Sensing Actual Sensing Duration (secs) Duration (hours) Duration (secs) Duration (hours) 2875022 4786909 2221089 4483632 3799207 11397621 10278360 4734141 2265739 2376114 5249716 4362753 4350816 6986182 4355908 5749247 4228452 7129681 4736669 4865020 7209745 5158518 799 1330 617 1245

1055 3166 2855 1315 629 660 1458 1212 1209 1941 1210 1597 1175 1980 1316 1351 2003 1433 2067443 3167672 1485632 3972247 3584888 10733931 7138261 3993314 1420193 1247227 4514072 3246667 3360482 4464937 3319737 4332986 3319929 5464716 3632671 3563456 4097004 4345031 574

880 413 1103 996 2982 1983 1109 394 346 1254 902 933 1240 922 1204 922 1518 1009 990 1138 1207 Success %(*) 72% 66% 67% 89% 94% 94% 69% 84% 63% 52% 86% 74% 77% 64% 76% 75% 79% 77% 77%

73% 57% 84% (*) does not take into account satellite unavailability Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 20 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) Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 21 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

USF_EOLI 9 USF USCF 8 SCIAMACHY 7 RA2MW R PFHS 6 MIPAS MERIS 5 MCF 4 INV GSP 3 GOMOS FEP 2 DF CSF 1 37

35 33 31 29 27 25 23 21 19 17 15 13 9 7 5 3 1 11 CMC 0 CDRF ASAR ARF

Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 22 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 23 PDS system (Kiruna-Artemis) scenario) DRS Ka-band data Ka-band data DRS TM/TC ENVISAT X-band data X-band TM/TC

X band data E_PAC UET X-band data DRS Mission Control center PDAS I_PAC F_PAC D_PAC UK_PAC S_PAC Fin Co PAC NSFS PDHS-K LRAC PDHS-E Kiruna PDS ISPs PDCC Industry Svalbard FOS FOCC RGT IECF

Envisat Validation Workshop 9 Decembre 2002 @ Esrin AOIP Aux data Page 24 Services to non-Cal/Val users Beyond Commissiong Phase services to Cal/Val teams, progressive access to Envisat products and services to nonCal/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. Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 25 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 Envisat Validation Workshop 9 Decembre 2002 @ Esrin Page 26

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