Digital Terrain Model 25 (DGM25)
Description
The data of the Digital Terrain Model 25 (DGM25) with 25 m grid are derived from laser scan data and photogrammetric evaluations (image correlation). The position accuracy of the laser scanning process is =30 cm. The height accuracy corresponds to ± 2.0 m. The DGM1 currently serves as “output DGM” for the derivation of digital terrain models 5, 25 and 50 (DGM5, DGM25, DGM50). The Digital Terrain Model 1 was obtained using the aircraft-assisted laser scanning process. Here, 3 to 4 measuring points were generated per square metre. The coordinate dimension of DGM data is 3D.
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Tags
- advmis
- digitale-geländemodell-25
- schleswig-holstein
- dgm25