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ENVISAT PDS
Status & Performance
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
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PDS Overall Status and Plans: Points to be addressed
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Operation strategy (the Kiruna-only and Kiruna-Svalbard scenario)
Encountered difficulties and progress
Objectives for the validation
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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
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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
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PDS system (Kiruna Only) scenario)
ENVISAT
X-band data
E_PAC
I_PAC
F_PAC
D_PAC
UK_PAC
S_PAC
Fin Co PAC
NSFS
UET
PDAS
PDHS-K
LRAC
PDHS-E
Kiruna
PDS
FOS
PDCC
Industry
X-band TM/TC
X band data
FOCC
RGT
IECF
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
AOIP
Aux data
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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
PACs
PDCC
PDHS
1-LR Unconsolidated level 0
2- ASAR Wave and MR
3- MERIS RR Level 2
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
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Kiruna Only Scenario data acquisition
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From Launch to 6th of November 2002
Kiruna Station Data Reception
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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
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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
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Kiruna Blind Orbits
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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
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
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Kiruna Only Scenario data processing
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Global Mission archiving and processing strategy
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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
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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
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Mission Planning
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Global Mission defined using the RGT ( Reference Ops Mission generation
Tool)
Regional Mission
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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
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Problems Encountered
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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
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Corrective Actions Implemented
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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
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PDS system (Kiruna-Svalbard) scenario)
ENVISAT
X-band data
E_PAC
I_PAC
F_PAC
D_PAC
UK_PAC
S_PAC
Fin Co PAC
NSFS
UET
X-band TM/TC
X band data
PDAS
PDHS-K
LRAC
PDHS-E
Kiruna
PDS
ISPs
PDCC
Industry
X-band data
Svalbard
FOS
FOCC
RGT
IECF
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
AOIP
Aux data
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Kiruna-Svalbard Scenario data processing
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Global Mission archiving and processing strategy
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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
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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
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Data Distribution Current Status
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Global Mission Data Products
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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
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ASAR and MERIS FR images produced at PACs
NRT production at PDHS-K has started
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
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Acquisition Planning
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Operational Status at 1st Dec.
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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
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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
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Operations Responsible:Page
S. Jutz
Production Planning
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Operational Status at 1st Dec.
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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
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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
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Catalogues
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Status at 1st December
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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.
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
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Envisat on-line catalogue
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
(open since mid-October)
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Envisat on-line catalogue
Japan – 5 Dec. 2002
ASAR WS
MERIS
Mekong River – 26 Oct. 2002
ASAR IM
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
(browse images)
AATSR
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Acquisition performance
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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
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Production performance (
Instrument
ASA
ASA
ASA
ATS
ATS
ATS
DOR
GOM
MER
MER
MER
MIP
MIP
MIP
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
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Circulation and dissemination performance
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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
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Maintenance performance
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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
CMC
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
0
CDRF
ASAR
ARF
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
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Future Plans
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Upgrade of the PDCC and PDHS-E HW
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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
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PDS system (Kiruna-Artemis) scenario)
DRS
Ka-band data
Ka-band data
DRS TM/TC
ENVISAT
X-band data
E_PAC
I_PAC
F_PAC
D_PAC
UK_PAC
S_PAC
Fin Co PAC
NSFS
UET
X-band TM/TC
X band data
PDHS-E
Kiruna
PDS
ISPs
PDCC
Industry
DRS Mission
Control center
PDAS
PDHS-K
LRAC
X-band data
Svalbard
FOS
FOCC
RGT
IECF
Envisat Validation Workshop – 9 Decembre 2002 @ Esrin
AOIP
Aux data
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Services to non-Cal/Val users
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Beyond Commissiong Phase services to Cal/Val teams, progressive
access to Envisat products and services to non-Cal/Val users:
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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
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Conclusion
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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
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