Examples of DEMs at 5m Resolution
Geoimage is able to supply clients with a 5m DEM generated from ALOS PRISM data. The ALOS World 3D Topographic Data product, known as AW3D, is currently being produced by Japanese companies RESTEC/NTT Data and will eventually be an "off the shelf" product.
AW3D uses the extensive archive stereo coverage that was collected by ALOS PRISM during the period 2005-2011. All suitable scenes within the archive have been "stacked", to assist cloud masking, and then a DEM is generated. Depending on the client's target area, this product can either be purchased immediately, or can be included within the AW3D processing chain.
|DEM Grid Resolution||5m|
||DSM or DTM|
|Suitable Area Size||<10,000 sq kms|
|Ground Control Required||No|
|Relative Vertical Accuracy Range||Up to 5m|
|Horizontal Accuracy Range (CE90)||2.5m-5.0m|