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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

IGN

TTI

CGIAR

ASTER

Intermap

Geosys

  • 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

Cartosphère

  • 50 m (France, Région, Dpt, détail)
  • 100 m (France, Région, Dpt, détail)
  • 250 m (France, Région, Dpt)
  • 500 m (France, Région)
  • 1000 m (France)
  • SRTM (Monde)

SpotImage

Document en cours de réalisation
 
main/donnees/donnee_mnt.1264530267.txt.gz · Dernière modification: 2010/01/26 19:24 par Robin
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