SPOT 3D
HRS instrument on SPOT 5
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HRS instrument on SPOT 5 is dedicated to simultaneous stereopairs acquisition:
  • 2 telescopes, one pointing forward and one aft of nadir, at a fixed angle of 20°
  • acquisition interval: 90 seconds along the track
  • an imaging swath of 600 km x 120 km (72,000 km2)
  • base/height ratio (B/H) of 0.8

 


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Reference3D
- Reference3D is a global, geocoded database developed jointly by Spot Image and the French mapping and survey agency, IGN.

It is the foundation for any application that relies on very-high-quality elevation databases. It contains three layers of information:
  • HRS DEM (digital elevation model),
  • HRS orthoimages,
  • quality and traceability data.
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[ ] Download the technical description for Reference3D (17 pages)
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DEM
- A digital elevation model (DEM) is a file containing elevation values distributed on a uniform grid of an area of interest.

SPOT DEMs are produced by automatic correlation of stereopairs acquired by HRS.
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[ ] Download the SPOT DEM Product Description (12 pages)
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