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WorldDEM DTMlite
Description
Provides a worldwide, consistent, and high precision Digital Terrain Model (DTM) at 24 m resolution in GeoTIFF format. WorldDEM DTMlite represents the surface of Earth after removing buildings, infrastructure, and vegetation.
Technical information
| Spatial resolution | 24 m |
| Image type | Radar |
| Acquisition mode | Bi-static InSAR StripMap mode |
| Geometric processing level | Correction of terrain artefacts, such as layover and shadow. Hydrological correction (editing of water bodies). Removal of surface features (vegetation, infrastructure, buildings). |
| Absolute vertical accuracy | 2.5 m (90% linear error) |
| Absolute horizontal accuracy | < 6 m (90% circular error) |
| Relative vertical accuracy | < 4 m (90% linear point-to-point error within an area of 1° x 1°) |
| Data acquisition period | 2011-2015 |
| Spectral band | X-band |
| File format | GeoTIFF |
| Bit depth per pixel | 32-bit |
| NoData value | -32767 |
| Vertical unit | meters |
| Coordinate system | Horizontal: WGS84/EPSG:4326 Vertical: EGM2008/EPSG:3855 |
| Limitations | The AOI must be larger than 0.1 km2 |
| Volume discounts | For orders larger than 2,500 km2, please contact [email protected] for volume discounts. |
User registration process and data access
Due to regulations about this data set, a user registration and compliance process is required before access to the data is granted. Access can currently not be provided for individual users. Data usage requires additional partner approval.
Sensitive countries are excluded from downloading the full-resolution product (please contact [email protected] for a release request).
Further information
For more information, please refer to the WorldDEM Technical Product Specification.