منابع مشابه
Aspects of Digital Elevation Model Determination
The paper describes aspects of research being undertaken on the determination and processing of digital elevation models. A 2-D Kalman filter has been developed based on dynamic and functional models for a grid DEM, to produce optimal estimates of terrain attributes of a DEM point using the relevant observations, and predictions derived from its orthogonal neighbouring points. A further method ...
متن کاملAccuracy assessment of digital elevation model using stochastic simulation
Various methods have been applied to generate Digital Elevation Models (DEM) but whatever method is used, DEM estimates will always be affected by errors. Comparing interpolated values with the actual elevation values, obtained with a high precision field survey, allows us to assess DEM accuracy. At every spot height location it is possible to subtract the actual values from the DEM values to o...
متن کاملAccuracy of Digital Elevation Model According to Spatial Resolution
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...
متن کاملGeomorphometric Analysis of Maroon River by Digital Elevation Model
Digital Elevation Models (DEMs) are used to estimate different morphologies, analysis of river profile, delineating drainage basin and drainage pattern associated with lithological and structural changes. The study area is Maroon River located in Khuzestan Province, Iran. In this study geomorphometric analysis based on DEM carried out to understand Maroon river uplift rate and tectonic- erosion...
متن کاملReview on Digital Elevation Model
Digital Elevation Models commonly known as DEM’s are widely used in Terrain Analysis & image processing applications. A Digital Elevation Model is commonly used for Analysis of various features & objects which are remotely sensed by various devices & Techniques of Modern Era. Detail Literature Review of DEM by referring various Journals & Research papers is proposed in this paper. Various Remot...
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ژورنال
عنوان ژورنال: Journal of Applied Sciences
سال: 2007
ISSN: 1812-5654
DOI: 10.3923/jas.2008.134.139