Results 21 to 30 of about 3,408,938 (300)

Vertical accuracy of data on the topographic maps and their application in mining [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2017
The paper describes some experiences and the methodology used for evaluation the vertical accuracy of data on the official (state) topographic maps. The vertical accuracy is an important element of quality 3D representation on the topographic maps in ...
Petrović Vladimir M.   +3 more
doaj   +1 more source

Comparison of TanDEM-X DEM with LiDAR Data for Accuracy Assessment in a Coastal Urban Area

open access: yesRemote Sensing, 2019
The TanDEM-X (TDX) mission launched by the German Aerospace Center delivers unprecedented global coverage of a high-quality digital elevation model (DEM) with a pixel spacing of 12 m.
Keqi Zhang   +5 more
doaj   +1 more source

Quality assessment of digital surface models extracted from WorldView-2 and WorldView-3 stereo pairs over different land covers

open access: yesGIScience & Remote Sensing, 2019
Digital surface models (DSMs) extracted from very high resolution (VHR) satellite stereo images are becoming more and more important in a wide range of geoscience applications.
Manuel A. Aguilar   +3 more
doaj   +1 more source

How to improve the accuracy of height data from bird tracking devices? An assessment of high-frequency GPS tracking and barometric altimetry in field conditions

open access: yesAnimal Biotelemetry, 2023
Background In the context of rapid development of wind energy infrastructure, information on the flight height of birds is vital to assess their collision risk with wind turbines.
Tonio Schaub   +7 more
doaj   +1 more source

Improving vertical positioning accuracy with the weighted multinomial logistic regression classifier [PDF]

open access: yesSN Applied Sciences, 2020
In this paper, a method of improving vertical positioning accuracy with the Global Positioning System (GPS) information and barometric pressure values is proposed. Firstly, we clear null values for the raw data collected in various environments, and use the 3$σ$-rule to identify outliers.
Yiyan Yao, Xin-long Luo
openaire   +2 more sources

Beyond Vertical Point Accuracy

open access: yes, 2021
Quantitative geomorphic research depends on accurate topographic data often collected via remote sensing. Lidar, and photogrammetric methods like structure-from-motion, provide the highest quality data for generating digital elevation models (DEMs).
Purinton, Benjamin (Dr.)   +1 more
openaire   +2 more sources

Optimal Design of a Micro Vertical Axis Wind Turbine for Sustainable Urban Environment [PDF]

open access: yes
The need for sustainable energy sources becomes greater each year due to the continued depletion of fossil fuels and the resulting energy crisis. Solutions to this problem are potentially in the form of wind turbines, for sustainable urban environment ...
Park, Kyooseon
core   +3 more sources

DMR50 – the first digital terrain model of Slovakia in the GCCA SR sector [PDF]

open access: yesActa Montanistica Slovaca, 2005
The digital terrain model (DTM) is a complex object of the Primary Database for The Geographic Information System (PD GIS). PD GIS is a component of the Automated Information System of Geodesy, Cartography and Cadastre.
Matej Klobušiak, Miloslav Ofúkaný
doaj  

Influence of Flight Altitude and Surface Characteristics on UAS-LiDAR Ground Height Estimate Accuracy in Juncus roemerianus Scheele-Dominated Marshes

open access: yesRemote Sensing
Management and monitoring of vulnerable coastal marshes rely on accurate ground height estimates. However, marsh surface characteristics such as vegetation and water presence complicate aerial remote sensing of the ground.
Michael Amelunke   +4 more
doaj   +1 more source

Evaluation of ASTER GDEM2 in Comparison with GDEM1, SRTM DEM and Topographic-Map-Derived DEM Using Inundation Area Analysis and RTK-dGPS Data

open access: yesRemote Sensing, 2012
This study evaluates the quality of the Advanced Spaceborne Thermal Emission Radiometer-Global Digital Elevation Model version 2 (ASTER GDEM2) in comparison with the previous version (GDEM1) as well as the Shuttle Radar Topographic Mission (SRTM) DEM and
Beni Raharjo   +4 more
doaj   +1 more source

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