Results 11 to 20 of about 117,298 (306)

Shaping the Global High-Resolution TanDEM-X Digital Elevation Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The global digital elevation model (DEM) produced by the TanDEM-X (TerraSAR-X add-on for digital elevation measurements) mission is an interferometric elevation model with unprecedented quality, accuracy, and coverage.
Martin Huber   +6 more
doaj   +3 more sources

Shirkat Town Monitoring Using Digital Elevation Model [PDF]

open access: yesEngineering and Technology Journal, 2011
In this search, a colored image of French satellite SPOT, of Shirkat country in Salahadeen was used with resolution about (5m) for an area with dimensions (4km×8km), and a digital elevation model (DEM) with grids (20m×20m) and levels reach to (1m ...
Iman A. Shawkat   +2 more
doaj   +1 more source

The Comparison of Different Procedures for the Preparing of the Digital Elevation Model, Case Study: Noferest watershed, Birjand township, South Khorasan Province [PDF]

open access: yesجغرافیا و آمایش شهری منطقه‌ای, 2014
The exact estimation of qualitative and quantitative characteristics of the natural phenomena requires a great deal of time and expense. Therefore, the interpolation procedures are used as a suitable solution in the estimation of the places which are ...
Ali. Ashrafi, Mohammad Ali. Alimi
doaj   +1 more source

EVALUATION DIGITAL ELEVATION MODEL GENERATED BY SYNTHETIC APERTURE RADAR DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Digital elevation model, showing the physical and topographical situation of the earth, is defined a tree-dimensional digital model obtained from the elevation of the surface by using of selected an appropriate interpolation method. DEMs are used in many
H. B. Makineci, H. Karabörk
doaj   +1 more source

Use of HAND terrain descriptor for estimating flood-prone areas in river basins

open access: yesRevista Brasileira de Ciências Ambientais, 2021
The flood hazard mapping in a river basin is crucial for flooding risk management, mitigation strategies, and flood forecasting and warning systems, among other benefits.
Ana Alice Rodrigues Dantas   +1 more
doaj   +1 more source

A PHASED CREATION OF DIGITAL ELEVATION MODEL FOR HYDRODYNAMIC MODELING IN FLAT ZONES

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2022
Hydrodynamic modeling of rivers with flood simulation requires an accurate description of the riverbed and inundation morphology. Depending on a geodetic survey method and data collected, the digital elevation models with different accuracy can be ...
Borko Radivojević   +3 more
doaj   +1 more source

Accuracy of points of cartographic projection of orthophotos obtained with Remotely Piloted Aircraft (RPA)

open access: yesGeografares, 2022
This study evaluated three orthophotos, generated from aerial surveys configured at 80 m, 100 m and 120 m in height with multirotor RPA, model Phantom 4 Pro from the company DJI coupled to Complementary Metal Oxide Semiconductor (CMOS) sensor of 1 inch ...
Agostinho Prado Alves Junior   +1 more
doaj   +1 more source

Comparison of Point Accuracies on Digital Elevation Model Obtained from Digital Air Photographs with Different Specifications

open access: yesInternational Journal of Environment and Geoinformatics, 2019
Photogrammetry is a map production technique or science applied by measurements made from terrestrial images with terrestrial cameras or more commonly used images taken with airborne cameras.
Aydan Yaman   +2 more
doaj   +1 more source

Non-affine georectification to improve the topographic fidelity of legacy geologic maps

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Field-based geologic maps, which are among the most valuable tools of communication among geoscientists, can be expensive and time-consuming to produce or manually revise.
Yichuan Zhu   +2 more
doaj   +1 more source

Hydrology Modelling-Based Biopore Infiltration Holes (BIH) Determination as River Flood Disaster Mitigation in Sewu Village, Surakarta, Central Java, Indonesia

open access: yesJurnal Geografi, 2020
Sewu Village is annually experience by river flooding. The application of Biopore Infiltration Holes (BIH) is one of the measures to reduce river flood disaster risk. This research was aimed to determine the proper location of the BIH. Hydrology tools by
Eka Wulan Safriani   +2 more
doaj   +1 more source

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