Introduction
This block provides access to a Digital Surface Model derived from the TerraSAR-X and TanDEM-X satellites. The data acquisition started in January 2011 and was completed by mid-2015.
Technical information
Compatible blocks
| Compatible blocks |
|---|
| Advanced Water-Related Geohazards Predictor |
| Co-Registration |
| Export Data (Raster) |
| K-means Clustering |
| NDVI Threshold |
| Raster CRS Conversion |
| Raster Tiling |
| Raster Zonal Statistics |
| Sharpening Filter |
| Spectral Data Converter - RGB |
| Temporal Change Detection |
| Time Series Image Statistics |
| Viewshed |
Dataset description
WorldDEM is a Digital Surface Model that represents the surface of Earth including buildings, infrastructure and vegetation. This dataset includes hydrological corrections, i.e. flattened water bodies and consistent flow of rivers, as well as shore- and coastline editing. For more information, please refer to the WorldDEM Technical Product Specification.
Geographic coverage
The geographic coverage is global.
Dataset information
| Specifications | Description |
|---|---|
| Spatial resolution | 12 m |
| Vertical accuracy | 2 m relative / 2.5 m absolute |
| 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). |
| Data acquisition period | 2011-2015 |
| Spectral band | X |
| File format | GeoTIFF |
| Bit depth | 32 bits per pixel |
| NoData value | -32767 |
| Vertical unit | meters |
| Coordinate system | Horizontal: WGS84/EPSG 4326 Vertical: EGM2008/EPSG 3855 |
| Can be reused in an UP42 workflow | No |
Limitations
The AOI size must be larger than 0.1 km2.
How it works
| Supported JSON parameters | Default value | Min | Max | Examples |
|---|---|---|---|---|
bbox/intersects | null | 0.1 km2 | n.a. | Please check the examples from the JSON parameters. |
Examples
Example based on a workflow created with the data block WorldDEM Full Resolution:
Example based on a workflow created with the data block WorldDEM Full Resolution and the processing block Viewshed:
For more information, please read the block description from the marketplace.
Capabilities
Output
raster
| up42_standard | |
|---|---|
bands | [
"dsm"
] |
dtype | float |
format | GTiff |
resolution | 12 |