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Posts tagged Radar

ASAR Image Orthorectification

April 3rd, 2009 Category: Earth Observation

Figure 1 - 3D Model

Figure 1 - 3D Model

These images of Reunion Island provide a clear example of the improvements made through the use of the orthorectification technique.
The original product has been processed, orthorectified and projected using the Chelys SRRS (Satellite Rapid Response System). The orthorectification process is now fully automatic and transparent. The Digital Elevation Model used is the Nasa SRTM v4 (Shuttle Radar Topography Mission).

The proper DEM is selected according to the image resolution: from 15 arcseconds up to 1 arcsecond (only available for USA). The performance of the system are kept in real-time. The entire correction process takes less than 20 seconds per product.

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