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An advanced laser scanner achieves the measurement by sending out light waves reflected to the sensor. In advanced processing, returns are assembled into a 3-dimensional point cloud. The number of points per square meter will vary from one point up to over 100 points depending on how high you fly. 

The advantage of airborne laser scanning is that you can get excellent documentation of the terrain, even in areas with a lot of vegetation. This allows the method to calculate a terrain surface with substantially greater accuracy and reliability than other techniques. The point cloud is further processed by separating different objects such as terrain surfaces, vegetation, buildings, and power lines.  

Our popular terrain model product (DTM) is valuable for designing new infrastructure such as roads, railways, and power lines. It can also calculate mass transfers and costs between clients and contractors. We also make surface models (DSM) that include vegetation, buildings, and other useful objects; for example, noise calculations and visibility analysis.