....Australia, Papua New Guinea, New Zealand and the Pacific countries, after signing an agreement with Intermap Technologies. Intermap collects elevation data aerially, using aircraft equipped with Interferometric Synthetic Aperture Radar (IFSAR) technology and supplements this with satellite acquired data to generate uniform, high-resolution 3D digital models and orthorectified imagery of the earth’s surface. Geoimage will be distributing Intermap’s NEXTMap® digital elevation models and image products, which include:
- Digital surface models (DSMs) - a first reflective surface model that contains elevations of natural terrain features in addition to vegetation and cultural features such as buildings and roads
- Digital terrain models (DTMs) - a bare earth model that contains elevations of natural terrain features such as barren ridge tops and river valleys with elevations of vegetation and cultural features, such as buildings and roads, digitally removed
- Orthorectified radar images (ORIs) - a grayscale radar image of the earth’s surface that has been corrected to remove geometric distortions caused by the terrain
