SPOT images
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A SPOT satellite image is a view of the Earth seen through one of the satellite痴 high-resolution imaging instruments. The technical characteristics of each instrument determine the resolution and spectral mode of the image.
The acquired image is then processed to suit users requirements in terms of geographic information. It is delivered in a standard format able to be integrated directly in current geographic information software packages.
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Resolutions and spectral modes
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By combining imagery from all five SPOT satellites, it is now possible to generate data
- at four levels of resolution (2.5 m, 5 m, 10 m and 20 m)
- in black and white and in colour
- across the same 60 km swath
This multi-resolution approach offers users the geospatial information they need at different scales.
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Preprocessing levels and location accuracy
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Spot Image痴 wide choice of preprocessing levels offers precise and reliable analysis tools to meet users diverse geographic information needs.
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Normal solar irradiance
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Spectral sensitivity
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Spot 5 Supermode
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Supermode is an image sampling process unique to SPOT 5 that yields a 2.5 m image from two 5 m black-and-white images acquired simultaneously.
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The SPOT images format
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The DIMAP format
DIMAP, which stands for Digital Image Map, is the new SPOT product data format introduced in mid-2002 for the launch of the new SPOT 5 satellite. DIMAP was developed in partnership with CNES, the french space agency.
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The CAP format
products derived from SPOT 1 to 4 can be supplied on request in the CAP format, CEOS standard compliant. |
SCIE format
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SCIE format is the alphanumerical format of SPOT images description. Our Sirius catalogue on line uses this format.
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SPOT image quality performances
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The document provides an overview of SPOT satellite image quality performances : MTF, absolute calibration, location accuracy.
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