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8 September 1995 SPOT 4's HRVIR and Vegetation SWIR cameras
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SPOT 4 satellite will carry two new observation instruments with infrared extended capabilities compared to the existing SPOT series (HRV). High spatial resolution imaging (20 m) will receive an additional 1.7 micrometer channel as well as a new payload instrument called VEGETATION. This instrument is devoted to low resolution (1.2 km) but wide field of view (2000 km) monitoring. Both IR channels use InGaAs THOMSON-CSF technology but each one has some specific features. Focal plane geometry, photodiodes configuration (staggered or lined up), dark current and fixed pattern noise reduction are discussed. Moderate cooling and thermal regulation around 5 degrees Celsius is achieved in order to meet the specified radiometric performances. SPOT's HRVIR and VEGETATION missions are reviewed from SPOT 1 to SPOT 4 and future SPOT 5 SWIR channel is introduced.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dominique Herve, G. Coste, G. Corlay, G. Plaisant, S. Schroer, Christian Henry, Xavier Hugon, and Jean-Francois Reulet "SPOT 4's HRVIR and Vegetation SWIR cameras", Proc. SPIE 2552, Infrared Technology XXI, (8 September 1995);


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