HIGH RESOLUTION INTERFEROMETRIC DIGITAL ELEVATION MODEL GENERATION AND VALIDATION

Digital elevation model generation from satellite interferometric synthetic aperture radar

An accurate digital elevation model (DEM) is a critical data set for characterizing the natural landscape, monitoring natural hazards, and georeferencing satellite imagery. The ideal interferometric synthetic aperture radar (InSAR) configuration for DEM production is a single-pass two-antenna system. Repeat-pass single-antenna satellite InSAR imagery, however, also can be used to produce useful...

Automatic Generation of High Resolution Urban Zone Digital Elevation Models

Digital Elevation Model Generation from Interferometric Synthetic Aperture Radar Using Multi-scale Method

Digital Elevation Models (DEMs) can be generated using a variety of techniques and data sources including levelling, photogrammetry, SAR interferometry, radargrammetry, and laser scanning. These different-sourced DEMs are affected by different systematic vertical and horizontal errors, as well as random noise. Moreover, each DEM generally has different spatial resolution and coverage. In genera...

Assessment Effect of the Spatial Resolution of Digital Elevation Model on Daily Discharge Estimation of Arazkuseh Watershed Using SWAT Model

The spatial quality of the Digital Elevation Model (DEM) has a great effect on the Soil and Water Assessment Tool (SWAT) semi-distributed model. The purpose of this study was to evaluate the effect of spatial accuracy of three DEMs with spatial resolutions of 10, 50 and 200 m on the results of daily discharge simulation in the Arazkuseh subwatershed located in Gorganroud watershed, Golestan pro...

Generation of Digital Surface Model from High Resolution Satellite Imagery

Elevation data is an important component of geospatial database. This paper focuses on digital surface model (DSM) generation from high-resolution satellite imagery (HRSI). The HRSI systems, such as IKONOS and QuickBird have initialed a new era of Earth observation and digital mapping. The half-meter or better resolution imagery from Worldview-1 and the planned GeoEye-1 allows for accurate and ...