Solutions - Noise Propagation Analysis

Noise Propagation Analysis

Environmental noise is a form of pollution that effects all inhabitants of an area. It is most critical close to airports, railways, highways, major road junctions, industrial areas, seaports, and alike locations. In 2002, the Environmental Noise Directive¹ was established in order to identify noise pollution levels and take actions for reducing the noise. One step for implementing the noise directive is the creation and publication of noise maps². The calculation of the propagation of noise and thus, determining the extension of noise levels in a specific area requires a digital terrain model (DTM) as well as a model of objects the effect the propagation of noise.

Airborne laser scanning is the quickest and most cost-effective way to gather 3D data of large areas. Laser scanning creates a point cloud that depicts the ground and all objects on it. The ground points can be extracted with TerraScan, from which a DTM is created. Non-ground points are further filtered into vegetation, buildings, bridges, and other structures. TerraScan also provides tools for the automatic creation of 3D building models (LOD2 - simple models with roof shapes) for large areas. There are sophisticated tools for improving the quality of the building vector models, where the automatic result is not satisfying.

More information

¹ The Environmental Noise Directive of the EU
² Reporting on the implementation of the Directive


DTM, building models
and tree locations

city model

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Last update on this website: 24.11.2020
Last update on this page: 11.09.2019