swissALTI3D

swissALTI3D offers an extremely precise digital elevation model for Switzerland, meticulously describing the country's surface free from vegetation and human development. This dataset serves as a fundamental height reference for a wide array of applications, including geographic information systems, 3D visualizations, and detailed simulations. Its high accuracy makes it suitable for tasks requiring precise elevation data, such as visibility analyses and mapping small structures.

The model is updated every six years, ensuring its relevance and accuracy over time. It is delivered as a grid with aperture widths of 0.5 m or 2 m, provided in complete 1 km by 1 km tiles. Users can access the data in various formats, including Cloud Optimized Geotiff (COG) and ASCII X,Y,Z, with an option for ESRI ASCII GRID upon request. The data is available in the current Swiss coordinate system, LV95 LN02.

swissALTI3D is a valuable resource for professionals in fields such as spatial planning, telecommunications, natural hazard assessment, and forestry. Its quality is maintained through a combination of new generation LiDAR data (0.3 m accuracy), previous generation LiDAR data (0.5 m), stereo correlation (1 to 3 m), and manual updates (0.1 m to 1 m), ensuring a robust and reliable dataset for diverse geospatial projects.