ESA UNCLASSIFIED

ESA UNCLASSIFIED – For Official Use

SENTINEL-1 OVERVIEW AND RELATED ACQUISITION PLANS: FORESTS AND AGRICULTURE

Johannes Roeder / Pierre PotinESRIN26/02/2014


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)


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


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


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


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


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



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)



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 -


Sentinel-1 – GFOI support South America- During forestry campaign -



Polarizationswitch4 times / aduringramp up

II. Sentinel-1 acquisition plans Sentinel-1 - Focus forest (East Africa)


Sentinel-1 – GFOI support East Africa- regular interferometry campaign -


Sentinel-1 – GFOI support East Africa- During forestry campaign -



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)



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



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



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!



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





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



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)


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


(Inc local station)

Operated by int. partners


EU International Agreements

Infrastructure

ESA UNCLASSIFIED – For Official Use SENTINEL-1 OVERVIEW AND RELATED ACQUISITION PLANS: FORESTS AND AGRICULTURE Johannes Roeder / Pierre Potin ESRIN 26/02/2014.

Documents

official use sentinel

mission overview sentinel

acquisition plans sentinel

official use slide

iws vv

wave wv20 x

vv dual polarisation