Selecting the right elevation model for your project can be challenging that is why Geodetics offers the following three simplified, but common interpretations for these data products: Elevation values from a LiDAR point cloud come from features including bare-ground, power lines, tree canopies or buildings. Each data product delivers different elevation values as each model uses different methodologies. Each laser beam can penetrate through surface-terrain features such as vegetation, high canopy, etc., with the final return being reflected from the bare-Earth surface.ĭigital Elevation Model (DEM), Digital Surface Model (DSM) and Digital Terrain Model (DTM) are three commonly implemented geospatial features generated with UAV mapping systems. With capabilities of up to four returns per beam and a data rate up to 1000k (points/second) per return – depending on LiDAR sensor used. Geodetics’ Geo-MMS LiDAR and Point&Pixel products are used to generate highly accurate and dense LiDAR point clouds in the standardized LAS file format. Digital Elevation Model vs Digital Surface Model vs Digital Terrain Model
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