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SPOT Earth surface satellite observation system (Satellite Pour L’Observation de la Terre) is engineered by the National Space Agency of France in cooperation with Belgium and Sweden. SPOT includes a number of space-based and ground facilities intended for satellite control, data collection programming, data acquisition and image drawing. SpotImage Company (France) is an operator of the satellite. SPOT-2 was launched on January 21, 1990 in sun-synchronous orbit at the height of 825 km. SPOT-4 spacecraft was launched on March 24, 1998 and placed in sun-synchronous orbit with altitude of 822 km. In comparison with preceding SPOT satellites, SPOT-4 has an additional short-wave infrared band which allows detecting surface type. SPOT-4 is equipped with daughter payload VEGETATION1 apparatus, jointly engineered by European Union, Belgium, Italy and Sweden. Estimated period in orbit is 5 years at least. SPOT-5 was launched from the Kourou Cosmodrome on May 3, 2002 in sun-synchronous orbit at the height of 822 km aboard Arian-42Ð missile carrier. SpotImage Company (France) is an operator of the satellite. SPOT-5 is equipped with high precision stereoscopy detector SPOT-DEM acquiring stereopairs used for global relief modeling perception and elevation plotting. Also it is fitted with 2 high resolution cameras which enable to acquire black-and-white imagery of 5 m spatial resolution (up to 2.5 m in SuperMode process) and color imagery with 10 m resolution. Besides, SPOT5 is fitted with VEGETATION 2 camera enabling to acquire daily images of the whole earth surface with 1 km resolution. Estimated period in orbit is 5 years at least. Basic characteristic: SPOT-2 and SPOT-4 | Mode: | Panchromatic | Multispectral | Vegetation 1 (SPOT-4) | | Spectral bands (mkm): | 0.50-0.73(SPOT-2)0.61-0.68(SPOT-4) | green: 0.50-0.59red: 0.61-0.68near IR: 0.78-0.89middle IR: 1.58-1.75 (only for SPOT-4) | 0.45-0.520.61-0.680.78-0.891.58-1.75 | | Spatial resolution: | 10 m | 20 m | 1 km | | Swatch Width: | 60 km (at nadir) | 60 km (at nadir) | 1000 and 2000 km | | Radiometric resolution: | 8 bits per pixel | 8 bits per pixel | 10 bits per pixel | | File format: | GeoTIFF | | Processing: | Radiometric, sensor and geometric correctionMapped to a cartographic projection | | Revisit time: | 26 days (at nadir surveying) | | Stereo imagery: | Available from a single pass |
Basic characteristic: SPOT-5 | Mode: | PAN | MS | Vegetation2 | | Spectral bands (mkm): | 0.48-0.71 | green: 0.50-0.59red: 0.61-0.68near IR: 0.78-0.89middle IR: 1.58-1.75 | 0.45-0.520.61-0.680.78-0.891.58-1.75 | | Spatial resolution: | 5 m (SuperMode – up to 2.5 m) | 10 m | 1 km | | Swatch Width: | 60 km (at nadir) | 60 km (at nadir) | 1000 and 2000 km | | Radiometric resolution: | 8 bits per pixel | 8 bits per pixel | 10 bits per pixel | | File format: | GeoTIFF | | Processing: | Radiometric, sensor and geometric correctionMapped to a cartographic projection | | Revisit time: | 26 days (at nadir surveying) | | Stereo imagery: | Available from a single pass |
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