Année 2010
- Caméra DMC.
- Région Oran.
- Surface : 3500 km², GSD GSD In remote sensing, ground sample distance (GSD) is the spacing of areas represented by each pixel in a digital photo (such as an orthophoto) of the ground from air or space. For example, in an image with a one-metre GSD, each pixel represents a ground area of 1 square metre. : 12,5cm.