These DEMs will be available through the latest generation of VHR satellites such as WorldView-3. With the WorldView-3 satellite acquiring stereo data at less than 50cm resolution, DEMs will be available at lower than 1m resolution. The higher resolution DEM products will allow more precise modelling within applications such as Project Planning.
* Client supplied ground control will improve vertical & horizontal accuracy.
|DEM Grid Resolution||50cm|
||DSM or DTM|
|Suitable Area Size||<2,500 sq kms|
|Ground Control Required||No*|
|Relative Vertical Accuracy Range||Up to 4m**|
|Horizontal Accuracy Range (CE90)||0.5m-5m|
|Availability||Typically new capture required|
**Geoimage regularly find relative vertical accuracies significantly better than those listed.