Lidar 2019 — Digital Surface Model (MNS)

**Technical details:** — Raster resolution: 50 cm. — Format: GeoTIF (Georeferenced Raster) — Coordinate system and projection: LUREF (EPSG 2169). ** Additional explanations:** The digital surface model is derived from the 2019 LiDAR flight data. For the calculation of the MNS, all points in the point cloud were used, except points classified as ‘power lines’ and points classified as ‘no points’ (representing errors). With a density of 15 points per m², several points may be located in a pixel. The value of the pixel (50x50 cm) represents the maximum of the altimeter values within the pixel surface. The numerical model of the surface contains for each pixel the maximum value of the absolute height. The visualisation of the model is done in “hillshade” mode, which is based on a simulation of a sunshine. This type of visualisation allows a more intuitive interpretation of the digital model. **Viewing:** https://map.geoportail.lu/theme/main?version=3&zoom=8&X=667917&Y=6394482&lang=fr&layers=1794&opacities=1