1. Earth Observation space systems - Thematic Centers-
WGISS-2009
D. Roumiguières

2. Outline Thematic centre role in space systems
CNES Earth Observation missions and Thematic centres
Thematic centre functional environment
Thematic centre partners

3. E-Phase functional architecture breakdown
(space system operator point of view)
Routine Mission Operation phase
(Starts after satellite in-orbit commissioning )
Space System Management
(operate, maintain & adapt)
Mission Data exploitation
Users community,
Services
Space segment
Mission segment
Cal Val
- Satellites / payload
- Command Control Center
- CC ground stations network
- Mission Programming Center
- Mission Data receiving network
- Data storage/archiving
- Data processing (low levels, sensor dependant)
- Data Quality control
- Performances monitoring
- Processing improvements
Users community interface
Data / products dissemination
Users feedback

4. CNES Earth Observation missions
Space System Management
(operate, maintain & adapt)
Mission Data exploitation
Users community,
Services
Space segment
Mission segment
Cal Val
Payload/Sensor oriented
Thematic oriented
Earth Observation systems
Thematic Centers
Images
Altimetry
Sounding
Spot, VGT, Hélios, Pléiades, Venµs
POSTEL
ICARE
Jason 1, Jason 2, Envisat, Doris, Cryosat2, AltiKa, HY2
ETHER
Polder, Parasol, Calipso, IASI, SMOS, Megha-tropiques
AVISO/IDS …
- One space system may feed several Thematic Centers
- One Thematic Center may use data provided by several space systems

5. The Thematic Center is an assembly point for :
Space systems data
Users
Thematic Center
Added value products
In-situ data
Models
Users feedback
The Thematic Center is an assembly point for :
Space system data
In-situ data
Computational models
 The added value products are the integration of these 3 elements
The Thematic Center collects users feedback to :
Improve interfaces and products dissemination
Improve products performances
Develop new products and services
The thematic center may be involved in CALVAL process (doted arrow)

6. Thematic Centers / Partners
Main partners
ICARE
atmosphere, clouds, aerosols, water & radiations interactions
CNRS, INSU, USTL, Région NPC, UE
ETHER
Atmosphere chemistry
CNRS, INSU, IPSL
POSTEL
land surface
CNRS, MétéoFrance, INRA, IRD
AVISO/IDS
Ocean surface topography/
Doris precise localization
NASA, NOAA, EUMETSAT, CLS
- CNES is mainly involved in space data providing, other data and models being provided by partners
- CNES and partners work together at
Added value products development
Data dissemination
Users feedback loop activation.