Results 11 to 20 of about 11,296 (261)
Comparis of digital elevation model (DEM) and aerial photographs for drainage [PDF]
Modeling Earth Systems and Environment, 2015 Currently, elevation data are available from several major sources and at different spatial resolutions. This paper shows the quality and accuracy of drainage network analysis resulted from ASTER DEMs and aerial photographs. Hydrology toolsets in the when we used the vector datasets for analyzing in separate land features.
Marzieh Mokarram, Majid Hojati
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Remote Sensing, 2021 Currently available high-resolution digital elevation model (DEM) is not particularly useful to geologists for understanding the long-term changes in fluvial landforms induced by tectonic uplift, although DEMs that are generated from satellite stereo ...
Zhiheng Liu +6 more
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The New Landsat Collection-2 Digital Elevation Model
Remote Sensing, 2020 The Landsat Collection-2 distribution introduces a new global Digital Elevation Model (DEM) for scene orthorectification. The new global DEM is a composite of the latest and most accurate freely available DEM sources and will include reprocessed Shuttle ...
Shannon Franks +2 more
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InSAR Elevation Inversion Method Based on Backprojection Model with External DEM
Leida xuebao, 2021 When Interferometric Synthetic Aperture Radar (InSAR) is used to obtain the Digital Elevation Model (DEM), highly sloped terrains will make interferometric fringes dense and increase the difficulty of phase unwrapping, which will affect the accuracy of ...
Xiaoning HU +3 more
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3D Visualization of Large Digital Elevation Model (DEM) Data Set [PDF]
, 2002 With the rapid development of Earth observation technologies, raster data has become the main Geographic Information System (GIS) data source. GIS should be able to manage and process huge raster data sets. In this paper, the problem of 3-dimensional visualization of huge DEM data sets and its corresponding images data sets in GIS was addressed. A real-
Min Sun 0003 +3 more
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A Novel Three-Dimensional Block Adjustment Method for Spaceborne InSAR-DEM Based on General Models
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Digital elevation model (DEM) generated by bistatic synthetic aperture radar interferometry (InSAR) usually has systematic plane and elevation errors. However, the DEM adjustment method based on the function model can only correct systematic elevation ...
Rui Wang, Xiaolei Lv, Li Zhang
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DEM Void Filling Based on Context Attention Generation Model
ISPRS International Journal of Geo-Information, 2020 The digital elevation model (DEM) generates a digital simulation of ground terrain in a certain range with the usage of 3D point cloud data. It is an important source of spatial modeling information. Due to various reasons, however, the generated DEM has
Chunsen Zhang +4 more
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Evaluation of the Accuracy of Digital Elevation Model Produced from Different Open Source Data
Journal of Engineering, 2019 This study aims to estimate the accuracy of digital elevation models (DEM) which are created with exploitation of open source Google Earth data and comparing with the widely available DEM datasets, Shuttle Radar Topography Mission (SRTM), version 3, and ...
Raghad Hadi Hasan
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Evaluation of vertical accuracy of open source Digital Elevation Model (DEM)
International Journal of Applied Earth Observation and Geoinformation, 2013 Abstract Digital Elevation Model (DEM) is a quantitative representation of terrain and is important for Earth science and hydrological applications. DEM can be generated using photogrammetry, interferometry, ground and laser surveying and other techniques.
Sandip Mukherjee +5 more
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Model zemeljskega površja - DMR ali DMV? : Earth's Digital Surface Model - DTM or DEM? [PDF]
Geodetski Vestnik, 2002 Definition of a term digital terrain model that can be shortly described as 'digital description of the Earth's surface' was analysed. Meaning and usage of terms 'digital terrain model' or shortly DTM and 'digital elevation model' or DEM were cleared up.
Tomaž Podobnikar
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