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737 (0,085s)

Výsledek výzkumu

DEM from interferometric processing

This article handles the quality of digital elevation models (DEM) created by means of radar interferometry from ERS tandem pairs. The influence of perpendicular of this thesis coherence is dealt with respect to the land cover. Resulting

DE - Zemský magnetismus, geodesie, geografie

  • 2007
  • D
Výsledek výzkumu

DEM from interferometric processing

This article handles the quality of digital elevation models (DEM) created by means of radar interferometry from ERS tandem pairs. The influence of perpendicular of this thesis coherence is dealt with respect to the land cover. Resulting

DE - Zemský magnetismus, geodesie, geografie

  • 2008
  • D
Výsledek výzkumu

Applicability of Data Acquisition Characteristics to the Identification of Local Artefacts in Global Digital Elevation Models: Comparison of the Copernicus and TanDEM-X DEMs

Several global digital elevation models (DEMs) have been developed in the last two decades. The most recent addition to the family of global DEMs is the TanDEM X DEM. The original version of the TanDEM X DEM is, ho...

Environmental sciences (social aspects to be 5.7)

  • 2021
  • Jimp
  • Odkaz
Výsledek výzkumu

OpenHFDIB-DEM: An extension to OpenFOAM for CFD-DEM simulations with arbitrary particle shapes

-solid interactions. In this paper, we introduce OpenHFDIB-DEM, an open-source immersed boundary method (HFDIB) and discrete element method (DEM). The software in a custom DEM implementation that is fully integrated in the ...

Chemical engineering (plants, products)

  • 2024
  • Jimp
  • Odkaz
Výsledek výzkumu

Octree-generated virtual mesh for improved contact resolution in CFD-Dem coupling

fluid dynamics (CFD) – discrete element method (DEM) solver allowing for computations with non-spherical solids. In general, the combination of CFD and DEM allows fluid. The standard approach of CFD-DEM solvers is to appro...

Applied mechanics

  • 2022
  • D
  • Odkaz
Výsledek výzkumu

Differential emission measure analysis of active region cores and quiet Sun for the non-Maxwellian kappa-distributions

We perform DEM reconstruction for three active region cores and a quiet Sun find that the reconstructed DEMs depend on the value of kappa. The DEMs departure from the Maxwellian distribution. For lower kappa, the peaks of t...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2014
  • Jx
  • Odkaz
Výsledek výzkumu

Choosing The Optimal Global Digital Elevation Model For Stream Network Delineation: Beyond Vertical Accuracy

Satellite-derived global digital elevation models (DEMs) are essential to improve the resolution of global DEMs (e.g., TanDEM-X) and create bare-earth DEMs (e.g DEMs in Central European mountains and submontane reg...

Earth and related environmental sciences

  • 2024
  • Jimp
  • Odkaz
Výsledek výzkumu

On the use of global DEMs in ecological modelling and the accuracy of new bare earth DEMs

indices derived from DEMs are widely used as surrogates for fieldmeasured environmental variables. Available global DEMs, such as those from the shuttle radar topographic indices and limits the use of global DEMs in ecolog...

Ecology

  • 2018
  • Jimp
  • Odkaz
Výsledek výzkumu

Accuracy assessment of the global TanDEM-X digital elevation model in a mountain environment

Digital Elevation Models (DEMs) derived from satellite data. The most recent addition to the family of global DEMs is the TanDEM-X DEM with resolution of 0,4 arc sec. DEMs. However, synthetic aperture radar interf...

Environmental sciences (social aspects to be 5.7)

  • 2020
  • Jimp
  • Odkaz
Výsledek výzkumu

Using of local indicators of spatial association for evaluation of spatial accuracy of DEM

by subtraction of estimated values of altitude (DEM) from the reference surface were used and size) from the perspective of different quality DEMs, i.e. DEMs created and low-quality DEM or DEM created by ...

DE - Zemský magnetismus, geodesie, geografie

  • 2012
  • D
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