accurate mapping of geological structures play an important role in the land management, some of which are considered as the origination of wind deposits, dust and aerosols. during the last decades, remote sensing has considerably helped the studies of desert areas especially in change detection of land phenomena. this study aims to study the facies morphology of playa in tabas kavir, based on ...

There are many kinds of DEM (Digital Elevation Model) generation methods such as a stereomatching from aerial photograph or satellite image, an interferometry from SAR data and an interpolation of topographic maps. On the other hand, we can use some accomplished DEMs. For example, NGDC NOAA offers global land one-km base elevation (GLOBE). And USGS offers Digital Chart of the World that has ele...

Recently, with InSAR data provided by the German TanDEM-X mission, a new global, high-resolution Digital Elevation Model (DEM) has been produced by the German Aerospace Center (DLR) with unprecedented height accuracy. However, due to SAR-inherent sensor specifics, its quality decreases over urban areas, making additional improvement necessary. On the other hand, DEMs derived from optical remote...

This paper presents the generation of DEM using six pairs of Radarsat-1 images for part of tropical terrain in Malaysia. The images were acquired with various beam modes and incident angles and used to generate DEMs by means of radargrammetry based on two SAR imaging models: Range-Doppler and Co-linearity condition equations model. First, the physical basis of these two models was assessed, and...

This paper evaluates the suitability of readily available elevation data derived from recent sensors – the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Shuttle Radar Topography Mission (SRTM) – for glaciological applications. The study area is Nevado Coropuna (6426 m), situated in Cordillera Ampato of Southern Peru. The glaciated area was 82.6 km in 1962, based...