Airborne Laser Scanning

Airborne laser scanning is a technique for surveying the earth’s surface using an active sensor for laser distance measurements, resulting in direct punctual measurements. Laser scanners can be mounted in our aeroplanes and enable a recording density of at least 4 points/m² in projects with several hundreds of square kilometres. A precision in sub decimetre range can be obtained. The result is a georeferenced point cloud which can be further classified into e.g. surface points, vegetation points and building points. Interpolation enables digital elevation models which provide a multitude of different applications.