Multimission platform and Brazilian EO
satellites
Gilberto Câmara INPE
http://www.dpi.inpe.br/gilberto
The need for global land observation
The world is changing rapidly
Climate Change is here to stay
Global land observation is a crucial need for the world, but its future is uncertain
MODIS is very useful,but has no future
What will happen to LANDSAT?
Global land observation systems are a public good
The need for fast monitoring of change
Protecting the Amazonian rain forest
Annual wall-to-wall detailed survey
Uses LANDSAT-class satellites
Daily monitoring of new deforestations
Uses MODIS-class satellites
Altamira (Pará) – LANDSAT Image – 22 August 2003
Altamira (Pará) – MODIS Image – 07 May 2004
Imagem Modis de 2004-05-21, com excesso de nuvens
Altamira (Pará) – MODIS Image – 21 May 2004
Altamira (Pará) – MODIS Image – 07 June 2004
6.000 hectares deforested in one month!
Altamira (Pará) – MODIS Image – 22 June 2004
Altamira (Pará) – LANDSAT Image – 07 July 2004
Go to the field....
...and get the bad guys!
Cumaru do Norte (PA)
Desmatamento 2005-2006 Desmatamento 2004-2005
Floresta
Desmatamento anterior
Rationale for Brasil’s SSR-1 satellite
Brazil needs satellites with fast revisit for real time deforestation detection
We currently use MODIS (daily revisit) but need a better spatial resolution
The AWFI (advanced wide field imager) sensor in CBERS-3 has 60 meter resolution every 5 days
SSR-1 will have a AWFI with 40 meter resolution every 5 days
With the AWFIs of CBERS-3 and SSR-1, we will cover Amazônia every 2 days
Meeting Brazil’s needs for remote sensing
1 10 100
1 10 100 1000
Resolution (days) Revisit (metres)
WFI CB2 CCD CB2/CB3
AWFI CB3 PAN CB3
Tecnology 2008
Tecnology 2015 Tecnology 2000 50
50 5
Agriculture mapping
Deforestation mapping
Deforestation detection Agriculture
identificatio n
5
AWFI CB3 + AWFI SSR1
2006 2007 2008 2009 2010 2011 2012 2013
LANDSAT-5 1984 LANDSAT-8 2012 MODIS 2001
US satellites used for Amazon deforestation monitoring
LANDSAT/5 – 30 metre resolution every 16 days MODIS – 250 metre resolution every day
Brazilian remote sensing satellites
Launch 2004 2005 2006 2007 2008 2009 2010 2011 2012 CBERS-2 2003
CBERS-2B 2007 CBERS-3 2009 CBERS-4 2012 SSR-1 2009 SSR-2 2012
Meeting Brazil’s needs for remote sensing
Today - We monitor Amazônia with 250 meters resolution every day
In 2009, Brazil will have the capacity to monitor Amazonia and the entire Earth with 50 meters resolution every 2 days
Multimission platform
Brazil’s project of medium-sized satellites
MMP: General purpose bus
Earth observation missions
polar or near–equatorial orbit
600 to 1200 km height
up to ~300 kg payload weight
175 W average / 900 W peak power
compatibility with launchers in the 500 – 600 kg payload class
Attitude control performance
Pointing precision: < 0.05º (3σ)
Drift: < 0.001º/s
Attitude determination: < 0.005º (3σ)
Lateral pointing agility: 30º in 180 s
Payload envelope
Possible payloads
Optical (CBERS heritage)
Wide-field imager
Medium resolution camera
Radar
Lightweight SAR
Scientific
GPM sensors
Optical payload (SSR-1)
SSR-1 optical payload
AWFI
Spectral bands (m)
0,45-0,52 B 0,52-0,59 G 0,63-0,69 R 0,77-0,89 NIR Spatial resolution (m) 40
Swath (km) 800
Revisit period (days) 5
SAR payload (SSR-2)
antenna reflector
MMP SAR payload
antenna feed horn
solar panel subreflector, data downlink
SSR-2 SAR payload
Parameters
Frequency L band
Polarization single, dual and quad polarization Incidence interval 20° – 45°
Spatial resolution 3 – 20 m
Swath 20 – 55 km
Orbit sun-synchronous
Coverage global
Look direction ascending/descending and left/right Revisit period weekly
Access to data near real time
Add. requirements Interferometry and stereoscopy
