End of ERS-1 mission

1
ERS and ENVISAT 1- The Missions Status and
Achievements 3- Opportunities 4- Information
and Contacts
2
Contribution to ESA per inhabitant and year
(EURO)
20-25 for Earth Observation ERS ENVISAT Earth
Explorers EarthWatch DUP Earthnet
3
ESA EO Mission Evolution
1991
ERS 1
1995
ERS 2
Ocean Colour Atmospheric Constituents
Oceans Sea Ice Cryosphere Land Surface Climatology
2001
ENVISAT
Global Ozone
4
ERS A European success From an engineering
success to the development of sophisticated
applications
5
1991 The evidence of an engineering achievement
Successful commissioning phase All instruments
are working nominally, sometimes exceeding the
specifications

• First low bit rate data
• all nominal

• First ATSR images
• Kuwait on fire

• First SAR images
• excellent quality

6
1992 The start of a scientific success

• First ERS Symposium Cannes
• Big interest (180 papers, 450 participants)
• Confirmation of the quality
• of the data provided by the instruments

• Watching the land

• Watching the ice

• Watching the seas

7
1993 The beginning for an increasing number of
applications
Oil slick La Coruna (E) (December 92 - January
93)
Flooding Mississipi river during Summer 1993

• A major EO milestone
• ERS-1 SAR Interferometry
• ERS-1 differential interferometry reaches the cm
  precision (Bonn experiment)
• Demonstration with Landers earthquake

Second ERS Symposium Hamburg 315 papers, 600
participants
8
1994 Monitoring the Earth
The geodetic mission An unprecedented view of the
Earth seafloor
First Pilot Projects Workshop Toledo paved the
way for applications
9
1995 The breakthrough of the tandem mission
ERS tandem mission (July 1995 - July 1996)
DEM with 10 m vertical precision are achievable
Second Pilot Projects Workshop
London progressing applications results
10
1996 Exploiting the potential of the tandem
mission
The tandem coherence provides an additional
information level for land use studies. A strong
complementarity with optical data is recognised.
Fringe Workshop Zurich the first workshop
dedicated to interferometry
11
1997 Contributing to the observation of El Nino
Temperature anomaly derived from ERS-2 and ERS-1
ATSR data
SAR tandem data used to monitor forest fires in
Indonesia
October 1997
Third ERS Symposium Florence 420 papers, 700
participants
12
1999 Exploiting 8 years of ERS-1 archived data
Estimated Velocity Field mm/yr Pomona
(California)

• New sophisticated technique
• permanent point scatterers
• allows to monitor sub-millimetric mouvement of
  buildings
• used for building collapse in Rome and Foggia
  (Italy)

Second Fringe Workshop Liege Confirmation of the
high value of the ERS-1 SAR data archive
13
2000 ERS Assessing the French storm trees damages
IGN map (Haguenau forest)
SPOT XS image (from archives)
The combination of SAR tandem data provides a
quick estimate of the amount of tree damages,
after the Christmas French storms.
ERS tandem coherence before the storm
ERS tandem coherence after the storm
Damages estimate (coherence gradient in pink
tones)
Based on Spot Image coherence products SERTIT
14
ERS Status Summary ERS-1 ended its mission in
March 2000 ERS-2 fully operational, funded
until end of 2002 new data policy implemented
15
ENVISAT SATELLITE CONFIGURATION
Dimensions - Launch configuration
length 10.5m envelope diameter 4.57m -
In-Orbit Configuration 26m x 10m x 5m Mass -
Total satellite 8140
Kg (including 319 Kg hydrazine) -
Payload 2050 Kg Solar Array power
6.5 kW (EOL) Average Power demand
Sun Eclipse (watts) (watts) Payload 1700
1750 Satellite 3275 2870 Launch vehicle
Ariane 5 (single launch)
16
Envisat Payload Composition

• ESA Developed Instruments (EDIs)
• MERIS Medium Resolution Imaging Spectrometer
• MIPAS Michelson Interferometric Passive
  Atmospheric Sounder
• ASAR Advanced Synthetic Aperture Radar
• GOMOS Global Ozone Monitoring by Occultation of
  Stars
• RA2 Radar Altimeter 2
• MWR Microwave Radiometer
• LRR Laser Retro Reflector
• Announcement of Opportunity Instruments (AOIs)
• SCIAMACHY Scanning Imaging Absorption
  spectrometer for Atmospheric Cartography
• AATSR Advanced Along Track Scanning Radiometer
• DORIS Doppler Orbitography and
  Radio-positioning Integrated by Satellite

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C-Band Advanced Synthetic Aperture Radar H/V
polarisation capability active antenna array
ASAR operating modes
18
ENVISAT Milestones Platform Payload
integrated in ESTEC Satellite Verification Test
ongoing (SVT-2 completed) Ground Segment
Readiness Review End March 2001 Flight Acceptance
Review Early April 2001 Launch (Ariane
5) Jun/Jul 2001 Commissioning Phase
/Cal-Val ( 6 months) Planned Operations and
Services 4-5 years
19
The Opportunities Exploitation Projects, Access
to data, Contracts Demonstration of B
Capabilities
20
Belgium AO Projects - 11 AO3 Projects, - 20
AO-ENV Projects, - 15 institutes/companies) Cate
gory 1 Project Proposals Access to all projects
results (some 1500 over all)
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Demonstration of B Capabilities
Second International Workshop on
ERS SAR Interferometry
FRINGE '99
'Advancing ERS SAR Interferometry from
Applications towards Operations'
10 12 November 1999
Palais des Congrès, Liège, Belgium
http//www.esa.int/fringe99/
150 Participants (Science, Applications,
VACs) 90 Presentations
22

• ENVISAT ENVISAT PDS Contracts
• ABSD (Alcatel Bell Space and Defense) and
• CIT Engineering NV
• PDS Acqusition Facility
• developement, project mgt, and integration
• Envisat X and Ka-band demodulators
• RHEA ESRIN On-site support

23
Contact Points Mission and Techn. Information,
Documentation EO Help Desk tel 39 06
94.180.777 fax [phone] Email
eohelp_at_esrin.esa.it ESA Earth Observation Home
Page http//earth.esa.int/
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ESA EO Explotation Project Home
Page http//projects.esa-ao.org/ ENVISAT Home
Page http//envisat.estec.esa.nl/ Open
Tenders EMITS ESRIN Contract Office
tel. no 39 06 94.180.381 fax no 39 06
94.180.382 http//emits.esa.int/