National coverage of France with SPOT multispectral geocoded images for landcover interpretation (IGN Cartographic Database).
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https://cmr.earthdata.nasa.gov/search/concepts/C1214585719-SCIOPS.html
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资源简介：
These SPOT XS images have been bought and processed by IGN
(French National Geographical Institute) to provide the basic information
for the interpretation of land cover over France. The geocoding used space
triangulation to correct the SPOT images by large continuous blocks (up to
several dozen SPOT scenes) using ground control points from topographic maps
at scale 1/25 000 and the IGN altimetric database (using a grid interval of
80 meters).
The orthoimages are archived by standard IGN 1/50 000 mapsheets. About 80 %
of the french territory has been covered and archived and the national
coverage should be completed by early 1995. The orthoimages can be ordered
by standard sheets at scale 1/50 000 on magnetic tapes or CD ROM through IGN
ESPACE. Prices can be obtained at IGN ESPACE.
提供机构：
SCIOPS
