Post on 24-Dec-2015
ESA UNCLASSIFIED – For Official Use
SENTINEL-1 OVERVIEW AND RELATED ACQUISITION PLANS: FORESTS AND AGRICULTURE
Johannes Roeder / Pierre PotinESRIN26/02/2014
ESA UNCLASSIFIED – For Official Use
I. Sentinel-1 mission overview Sentinel-1 Mission Facts
• Constellation of two satellites (A & B units)
• C-Band Synthetic Aperture Radar Payload (at 5.405 GHz)
• 7 years design life time with consumables for 12 years
• Near-Polar sun-synchronous (dawn-dusk) orbit at 698 km
• 12 days repeat cycle (1 satellite), 6 days for the constellation
• Both Sentinel-1 satellites in the same orbital plane (180 deg phased
in orbit)
• Optical Communication Payload (OCP) for data transfer via laser
link with the GEO European Data Relay Satellite (EDRS)
• Launch of Sentinel-1A scheduled for 03 April 2014
(Sentinel-1B ready for launch by end 2015)
ESA UNCLASSIFIED – For Official Use
Sentinel-1A major milestones
QAR KO (Satellite Qualification Review) January 13th, 2014
QAR Conclusion February 18th, 2014
Arrival in Kourou and start of Launch Campaign February 24st, 2014
Launch April 3th, 2014
I. Sentinel-1 mission overview Sentinel-1 Mission Facts
Slide 4
ESA UNCLASSIFIED – For Official Use
4 mutually exclusive SAR modes with different resolution and coverage
• Polarisation schemes for IW, EW & SM:
single polarisation: HH or VV
dual polarisation: HH+HV or VV+VH
• Wave mode: HH or VV
• SAR duty cycle per orbit: up to 25 min in any of the
imaging modes up to 74 min in Wave mode
Main modes of operations: - IW over land and coastal waters (normally VV or
VVVH polarization)- EW over extended sea (VV or VVVH) and sea-ice
(HH or HHHV) areas- WV over open oceans
I. Sentinel-1 mission overview Sentinel-1 SAR imaging modes
ESA UNCLASSIFIED – For Official Use
In line with the Sentinel operations strategy objectives:
Implement pre-defined and conflict-free observation plans, aiming at fulfilling, . to the best extent, the observation requirements from:
- the Copernicus services- the use by ESA / EU Member States
In addition, on a best effort basis:- ensure continuity of ERS/ENVISAT- implement requirements from the science community- contribute to international cooperation activities.
During the ramp-up phase: Start serving selected project needs located outside already established observation zones on a best effort basis
Need to find a priori the solutions for potential conflicts among users (e.g. different SAR operation modes / polarisation required over the same geographical area)
Build substantial archives
-
II. Sentinel-1 acquisition plans Sentinel-1 observation scenario objective
ESA UNCLASSIFIED – For Official UseSlide 6
II. Sentinel-1 acquisition plans Sentinel-1 gradual capacity increase (ramp-up) triggers:
Data download & sensing time
ESA UNCLASSIFIED – For Official Use
II. Sentinel-1 acquisition plans Basic observation characteristics (excerpt)
Mode Swath Wide
Stripmap (SM) 80 km
Interferrometric Wide Swath (IWS)
250 km
Extra Wide Swath (EWS)
400 km
Wave (WV) 20 x 20 km
Standard production
PRODUCT RESOLUTION (rg. X az.)
No. of looks
GRD-MR 88 x 87 m 22 x 5
GRD-HR 20 x 22 m 5 x 1
SLC (selected areas only)
2.7-3.5 x 17.4 m 1 x 1
Standard mode – polarization combinations
Over land* IWS VV or VVVH
Major ice-caps IWS HH
Sea-ice* EWS HH or HHHV
(European) marginal seas*
IWS or EWS VV or VVVH
* Some exceptions
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 8
ESA UNCLASSIFIED – For Official Use
Consistent European coverage
Sea-ice, -state, maritime surveillance
Major risk areas (tectonic and
volcanic activity)
Based on requests by COPERNICUS services and EU/ESA member-states
II. Sentinel-1 acquisition plans Sentinel-1 major observation scenario constituents for the first 6 month
High frequent two-pass
coverage of tectonically . . and volcanic active areas
Served bi-cyclic
Based on requests by EU/ESA member-states and science
Zonal global background mapping
Drought zones taken from FAO global climate map, extrapolated to countrywide wall-to-wall coverages
IWS mode, VVVH polarization
One pass
Following multiple requests, main trigger flood reference mapping
Various further requests for smaller local to regional zones to be acquired
during repetitive campaigns (e.g. ice-shields)
with medium frequency
with seasonality
to be gradually intro-duced into the routine observation scenario
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 9
ESA UNCLASSIFIED – For Official Use
13 reference data sets
One especially dedicated to forestry (Sumatra)
public available shortly after IOCR
high frequency
(<=12 d)
to be continued throughout whole mission
II. Sentinel-1 acquisition plans Sentinel-1 - Focus forest (reference data set)
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 10
ESA UNCLASSIFIED – For Official Use
Polarizationswitch4 times / aduringramp up
II. Sentinel-1 acquisition plans Sentinel-1 - Focus forest (South America)
Tectonically active areas & volcanoes monitoring
Sentinel-1 – GFOI support South America- regular interferometry campaign -
Tectonically active areas & volcanoes monitoring
Sentinel-1 – GFOI support South America- During forestry campaign -
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 11
ESA UNCLASSIFIED – For Official Use
Polarizationswitch4 times / aduringramp up
II. Sentinel-1 acquisition plans Sentinel-1 - Focus forest (East Africa)
Tectonically active areas & volcanoes monitoring
Sentinel-1 – GFOI support East Africa- regular interferometry campaign -
Tectonically active areas & volcanoes monitoring
Sentinel-1 – GFOI support East Africa- During forestry campaign -
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 12
ESA UNCLASSIFIED – For Official Use
Support to GEOGLAM Phase 1a:
4 rice test-beds
Every 24 days
IWS mode, VVVH polarization
II. Sentinel-1 acquisition plans Sentinel-1 - Focus agriculture (SE - Asia)
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 13
ESA UNCLASSIFIED – For Official Use
II. Sentinel-1 acquisition plans Sentinel-1 - Focus SE-Asia
Overpass (UTC):
ASC: ca. 11:00-11:30
DESC: ca. 23:00-23:30
Only small swath overlapdue to equator closeness
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 14
ESA UNCLASSIFIED – For Official Use
Perspective SE-Asia
Potential for a frequent-revisit zoneOn the SE-Asian Peninsula:
Clustering of requirements in the region
Sufficient resources may become available last quarter 2014
Potentially one-pass coverage, dual polarization (VVVH)
Under discussion and evaluation
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 15
ESA UNCLASSIFIED – For Official Use
Sentinel-1 acquisition plans Sentinel-1 observation scenario constituents
Keep updated - follow Sentinel-1 on the web:Further information on Sentinel-1 observation scenarios will become available at ESA`s ‘Sentinel online’ website including:
A detailed description of the Sentinel-1 observation scenario for the ramp-up phase before launch (HLOP already present)
Consolidated observation plans (will allow to browse through strips) successively for the ramp-up phase published during the commissioning
THANK YOU!
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 16
ESA UNCLASSIFIED – For Official Use
Consistent European
coverage
Sea-ice, -state,
maritime surveillance
Major risk areas
(tectonic and
volcanic activity)
Based on requests
by COPERNICUS
services and EU/ESA
member-states
II. Sentinel-1 acquisition plans Sentinel-1 major observation scenario constituents for the first 6 month
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 17
ESA UNCLASSIFIED – For Official Use
II. Sentinel-1 acquisition plans Sentinel-1 major observation scenario constituents for the first 6 month
High frequent
two-pass coverage
of tectonically and
volcanic active . areas
Served bi-cyclic
Based on requests
by EU/ESA
member-states
and science
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 18
ESA UNCLASSIFIED – For Official Use
II. Sentinel-1 acquisition plans Sentinel-1 major observation scenario constituents for the first 6 month
Zonal global background
mapping
Drought zones taken
from FAO global climate
map, extrapolated to
countrywide wall-to-wall
coverages
IWS mode,
VVVH polarization
One pass
Following multiple
requests, main trigger
flood reference mapping
ESA Presentation | Johannes Roeder / Pierre Potin | ESRIN | 26/02/2014 | Slide 19
ESA UNCLASSIFIED – For Official Use
Sentinel-2: Possible steps during ramp-up scenario (under consolidation)- Phase 1: ~3-4 months, Phase 2: ~4-5 months
1)1) -2) transition
2a) 2b)
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Sentinel Data AccessDifferent infrastructures adapted to different user typologies
ESA Collaborative
Access
Copernicus Services AccessD
ata
Acce
ss L
ayer Scientific /
OtherAccess
ESA funded R&D
projects
Scientific/ Other users
Copernicus Services
ESA MSs Collaborative
Users
International users
The Sentinel Data Policy and the funded operational accesses offer a dedicated access per user type potentially complemented by additional data
retrieval points
Operated by ESA MSs
National Mirrors (Inc local station)
National Mirrors (Inc local station)
National Mirrors
International Mirrors
International Mirrors
(Inc local station)
Operated by int. partners
International Mirrors
EU International Agreements
Infrastructure