1. Attitude control. Earth observation
From application satellites in low circular orbits (Earth observation) and geostationary orbits (telecommunications), to scientific satellites in elliptical orbits, they all require a privileged orientation (attitude) in orbit.
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The purpose of the "attitude measurement and control" function, also known as stabilization, is to determine the satellite's attitude relative to external reference points, and to adjust and maintain this attitude despite external and internal disturbances.
This attitude measurement is commonly performed using attitude sensors that detect and measure the instantaneous directions of fields produced by the surrounding stars: magnetic fields, gravity gradients and optical radiation. Whenever high angular accuracy is required (typically
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Attitude control. Earth observation
Bibliography
References
Manufacturers and suppliers
Ball Aerospace (USA)
Goodrich (Division of Barnes Engineering and Ithaco) (USA)
Geofizika (Russia)
Jena-Optronik GmbH (Germany)
LMA (Lockheed Martin Astronautics) (USA)
NT Space (Nec Toshiba Space) (Japan)
Galileo AvionicaOptics and Space Division (Italy)...
Organizations
CNES (Centre National d'Études Spatiales) : Headquarters (Paris) & Toulouse Center
ASE/ESA (Agence Spatiale Européenne/European Space Agency): Headquarters (Paris) & ESTEC (Noordwijk – Netherlands)
ISRO (Indian Space Research Organization)
NASA (National Aeronautics and Space Administration)
GSFC (Goddard Space Flight...
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