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Plugin installed incorrectly. Rename plugin directory 'backlinks.old' to 'backlinks'.
−Table des matières
Dossier sur la donnée altimétrique
Dans cet article seront analysées les différentes offres du marché en terme de fourniture de données altimétrique, leur précision, leur origine, leurs prix.
Théorie
Avant tout, quelques termes techniques et leur définition (cliquer sur le mot): MNS, MNE (en anglais DEM), MNT (en anglais DTM),
En France
Les fournisseurs
- L'IGN avec la BD Alti /Topo et ses différentes gammes (et prix) - cf le fil ci-dessus : http://www.ign.fr/rubrique.asp?rbr_id=2214&lng_id=FR
- Le SRTM du CGIAR et ses différentes gammes en fonction de la localisation sur le globe : http://srtm.csi.cgiar.org/
- La société TTI : http://www.tti.fr/.
Intermap
- TerrainOndemand : http://www.terrainondemand.com/ (données Nextmap)
Geosys
- URL : http://www.geosys.com
- Revente de la BD Alti (IGN)
- Interférométrie radar : DEM de 20m sur toute l’Europe
- Stéréo SPOT 5 HRS : DEM de 30m (une seconde) sur toute la planète
- Stéréo ASTER : DEM de 30 m sur toute la planète
- Stéréo IRS P5 : DEM de 10m
- Laser aéroporté : de 20 cm à 5m
- Stéréo IKONOS : DEM de 5m
- La société Spot Image : http://www.spotimage.fr/web/743-spot-3d.php.
Document en cours de réalisation
