| Product |
Horizontal accuracy
(CE 90) |
Correction level |
Examples of applications |
| Basic |
+/- 23 m |
Radiometric corrections and corrections for distortions due to detectors |
Precision photogrammetry based on the parameters supplied (attitude, ephemeris and information on the instrument model)
|
| Standard |
+/- 23 m |
Radiometric corrections and corrections for distortions due to detectors
geometric corrections according to a given type of map projection |
For small surface areas or applications which do not require a high degree of location accuracy
Requires image processing tools
|
| Orthorectified |
+/- 12.7 m |
Radiometric corrections and corrections for distortions due to detectors
geometric corrections according to a given type of map projection.
elimination of distortion due to relief by means of a DEM and ground control points (which are sometimes supplied by the user)
|
This product can be directly integrated in a GIS: an ideal underlay for making and updating GIS maps and data bases
Change detection and other analyses requiring a high degree of location accuracy
|
