Digital Elevation Data
As an authorized reseller for Intermap’s NEXTMap Digital Elevation products, MySpatial provides optimized, multi-sensor-derived digital elevation data and orthorectified radar images to enable accurate geospatial analyses in any area of interest. Our NEXTMap products consist of seamless, wide-area, and current terrain information, including:
- NEXTMap Digital Surface Model (DSM): The DSM has a 5-meter Ground Sampling Distance (GSD) and 1-meter RMSE vertical accuracy.
- NEXTMap Digital Terrain Model (DTM): The DTM has a 5-meter GSD and 1-meter RMSE vertical accuracy.
- NEXTMap Orthorectified Radar Image (ORI): The ORI has a 1.25-meter pixel and 2-meter RMSE horizontal accuracy.
- NEXTMap World 30 : This DSM has worldwide coverage comprised of fused SRTM, ASTER, and GTOPO-30 datasets all vertically controlled using ICESat LiDAR points. This allows for a 6-meter RMSE.
The NextMap Digital Elevation products for DSM, DTM and ORI coverage for the whole Malaysia is completed since 2009 with the acquisition of Interferometric Synthetic Aperture Radar (IFSAR). IFSAR is a radar technique used in geodesy and remote sensing. This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface deformation or digital elevation, using differences in the phase of the waves returning to the aircraft.