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Observing Systems Capability Analysis and Review Tool
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Observation Requirements
Space-based Capabilities
Surface-based Capabilities
Analysis
Overview
Programmes
Satellites
Instruments
Frequencies
Agencies
Satellite Status
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Satellite Programme: Satellite Pour l’Observation de la Terre
Programme details
Programme description
Series of five operational satellites, for high-resolution land observation.
French programme: CNES responsible of design, development and operations.
The platforms are actively stabilised over 3 axes.
The design life time is 3 years for SPOT 1/2/3, 5 years for SPOT 4/5.
The satellites exploit sunsynchronous orbits around 10:30.
The replacement policy is based on launching satellites in sequence, roughly 6 months before the expected end-of-life of a satellite.
See detailed description at
http://smsc.cnes.fr/SPOT/index.htm
.
Data circulation
Selected images are stored onboard and downlinked to stations in Kiruna and Toulouse.
Real-time downlink to a network of appointed acquisition stations in X-band.
All data concentrated to the Centre d'Archivage et de Prétraitement (CAP) for processing and distribution.
For SPOT 4 and 5, data from Végétation are also transmitted in real-time in L-band and processed at VITO (Vlaamse Instelling voor Technologisch Onderzoek), Belgium.
For SPOT-4, data are also conveyed (experimentally) through the Data relay satellite ARTEMIS.
Agencies
CNES
,
Spot Image
Programme lifetime
1986 - 2015
Associated satellites and instruments
Note: red tag => no longer operational , green tag => operational , blue tag => planned
Satellite Pour l’Observation de la Terre
SPOT-1
(1986-2003)
HRV
SPOT-2
(1990-2009)
DORIS
HRV
SPOT-3
(1993-1996)
DORIS
HRV
POAM
SPOT-4
(1998-2013)
DORIS
HRVIR
PASTEC
POAM
Végétation
SPOT-5
(2002-2015)
DORIS
HRG
HRS
Végétation