What is Digital Surface Model（DSM）

Apr 18, 2023

In a LiDAR system, a light pulse travels to the ground, and when the light pulse bounces off its target and returns to the sensor, the detection range is obtained. LiDAR provides massive point clouds with elevation values, which can come from building tops, tree canopies, power lines, and other features, and DSM captures natural and architectural features on the Earth's surface.

DSM can be used for 3D modeling in telecommunications, urban planning and aviation. In aviation, DSM can determine runway obstacles in the approach area. In vegetation management, DSM can see the location and amount of vegetation encroachment. DSM can be used in urban planning to check whether proposed buildings will interfere with views.