Digital height model Hamburg DGM 1

Extensive digital terrain model with a grid width of 1 meter for the area of the Free and Hanseatic City of Hamburg, derived from laser scanning (airborne laser scanning) or photogrammetric products.

The data come from the country-wide 3D laser scanning operations from 2010, 2020 and 2022 and are available in the situation status ETRS89_UTM32 (location status 310) and with altitude data on normal height zero (NHN), according to DE_DHHN2016_NH. A selective update of these data takes place via photogrammetric products and is possibly documented in the metadata of the individual vintages.

The accuracy of a single measuring point is approximately ± 15 cm in clearly defined areas, e.g. on road surfaces. In areas of shading (e.g.: Bridges), dense vegetation, especially areas in forest and shrub areas and with strongly inclined terrain, the accuracy is lower.

By default, the LGV will offer the following grid width from 2022: DGM 1 (grid width 1 m).

Older vintages also have the following grid widths:
DGM 10 (frame width 10 m)
DGM 25 (frame width 25 m)

In addition to the mere provision of altitude information as a regular grid, the data are also provided as a service in a triangular mesh (TIN). Data exchange with 2D and 3D CAD systems is ensured. As a further service, e.g. contour lines and profiles can be derived or volumes and inclinations can be calculated. By integrating further geobase and specialist data (vector and grid data), further services for water management, civil engineering, environment and urban planning as well as energy supply for large and small-scale applications can be derived.