Results 71 to 80 of about 1,141,152 (233)

Mechanism of inter-particle friction effect on 3D mechanical response of granular materials

open access: yesYantu gongcheng xuebao, 2020
The inter-particle friction is regarded as an important factor that affects the stress and deformation characteristics of granular materials. The existing researches mainly focus on the influences of inter-particle friction on the accumulation ...
YANG Shu-han 1, 2, ZHOU Wei 1, 2, MA Gang 1, 2, LIU Jia-ying 1, 2, QI Tian-qi 1, 2
doaj   +1 more source

Centrifugal model test and numerical simulation for anaclinal rock slopes with soft-hard interbedded structures

open access: yesYantu gongcheng xuebao, 2020
Most of the toppling deformations exposed in western China have soft-hard interlayer structures. The maximum depth even reaches 300 m. In order to further explore the toppling mechanism of soft-hard interbedded anaclinal slope, centrifugal model tests ...
HUANG Da 1, 2, 3, MA Hao 2, MENG Qiu-jie 3, SONG Yi-xiang 3
doaj   +1 more source

TanDEM-X DEM Calibration Status and Commissioning Phase

open access: yes, 2008
TanDEM-X is the first bistatic space-borne SAR mission. It will be formed by adding a second, almost identical spacecraft to TerraSAR X and flying them in a closely controlled formation.
Bachmann, Markus   +2 more
core  

Perbandingan Teknik Interpolasi Dem Srtm Dengan Metode Inverse Distance Weighted (Idw), Natural Neighbor Dan Spline

open access: yes, 2012
Model simulasi banjir membutuhkan input data berupa Digital Elevation Model (DEM) dengan resolusi spasial 10 meter yang lebih tinggi dibandingkan data DEM Shuttle Radar Topography Mission (SRTM) yang tersedia saat ini.
Junita Monika Pasaribu   +1 more
core  

TanDEM-X Mission and DEM Accuracy

open access: yes, 2009
TanDEM-X (TerraSAR-X Add-on for Digital Elevation Measurements) is currently implemented as a national Earth observation mission by the German Aerospace (DLR) and EADS Astrium GmbH.
Johannes, Böer   +5 more
core  

Ambienti GIS per le Applicazioni Radio Elettriche

open access: yesGEOmedia, 2005
Tradizionalmente la principale fonte di dati territoriali era, e ancora rimane, la cartografia, che è però una rappresentazione a scala ridotta di zone generalmente limitate della superficie terrestre.
Vector Srl Vector Srl
doaj  

Validation of the tie-point concepts by the DEM adjustment approach of TanDEM-X

open access: yes, 2010
The aimed accuracies for the final TanDEM-X DEM of 10m absolute and 2m relative height error will be ensured by calibration data. One crucial data set for the relative accuracy is tie-points that connect adjacent DEM acquisitions in the approximately 4km-
Huber, Martin   +4 more
core  

A quantitative procedure for building physiographic units supporting a global SOTER database

open access: yesHungarian Geographical Bulletin, 2010
Until recently, manual methods were used for delineating SOILSCAPE. The use of digital data sources, such as digital elevation models (DEM) and satellite data can speed up the completion of digital soil databases and improve the overall quality ...
Endre Dobos   +2 more
doaj  

Vertical Accuracy Assessment of Digital Elevation Models Generated by Sentinel 1A: A Case study: Eldabha, EGYPT [PDF]

open access: yesJES: Journal of Engineering Sciences
This research focuses on improving the vertical accuracy of Digital Elevation Models (DEMs) generated from Sentinel-1A satellite imagery. The study investigates the influence of Goldstein filtering, temporal baseline, and perpendicular baseline on DEM ...
Mohamed Besheer   +3 more
doaj   +1 more source

Analysis of DEM combination methods using high resolution optical stereo imagery and interferometric SAR data

open access: yes, 2009
Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different methods: photogrammetry for optical stereo images (e.g.
Hoja, Danielle, d'Angelo, Pablo
core  

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