Estimating building height in China from ALOS AW3D30
, 2023 This study developed a method to estimate building height for all of China based on the Advanced Land Observing Satellite (ALOS) World 3D-30 m (AW3D30) DSM and other ancillary data including the Global Artificial Impervious Area (GAIA) dataset, the ...
Peng Gong (9932184) +7 more
core +1 more source
ELEVATION-BASED SEA-LEVEL RISE VULNERABILITY ASSESSMENT OF MINDANAO, PHILIPPINES: ARE FREELY-AVAILABLE 30-M DEMS GOOD ENOUGH? [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 We assessed the vertical accuracies and uncertainties of three freely-available global DEMs as inputs to elevation-based sea-level rise vulnerability assessment of Mindanao, Philippines – an area where above average SLR of 14.7 mm/year was ...
J. R. Santillan +3 more
doaj +1 more source
Comparison of different DEMs for hydrological studies in the mountainous areas
Egyptian Journal of Remote Sensing and Space Sciences, 2021 The optical and radar satellite data based Global Digital Elevation Models (DEMs) serve as a main data source in hydrological studies today. Open access Remote Sensing (RS) products have increasing accuracy and improved spatial resolution.
Akylbek Chymyrov
doaj +1 more source
Towards ice-thickness inversion: an evaluation of global digital elevation models (DEMs) in the glacierized Tibetan Plateau [PDF]
The Cryosphere, 2022 Accurate estimates of regional ice thickness, which are generally produced by ice-thickness inversion models, are crucial for assessments of available freshwater resources and sea level rise.
W. Chen +10 more
doaj +1 more source
Evaluation of open-access global digital elevation models (AW3D30, SRTM and ASTER) for flood modelling purposes [PDF]
, 2017 Elevation data in the form of Digital Elevation Models (DEMs) has been recognised as a basic piece of information for the accurate representation of topographic controls exerted in hydrologic and hydraulic models.
Courty, Laurent Guillaume +2 more
core +1 more source
Assessment of vertical accuracy of open source 30m resolution space-borne digital elevation models
Geomatics, Natural Hazards & Risk, 2021 Highly accurate air-borne Digital Elevation Models (DEMs) are not commonly available in most regions of the world, particularly developing countries like Nepal.
Rocky Talchabhadel +4 more
doaj +1 more source
O Modelo Digital De Elevação Topodata: Analise Comparativa Com O Aster, Aw3D30 e Alos Palsar [PDF]
, 2022 A utilização de Modelos Digitais de Elevação (MDEs) tem sido crucial para o desenvolvimento de estudos técnicos e científicos nas áreas ambientais, de recursos hídricos e planejamento urbano.
Silva, Fagna Fernandes
core
International Journal of Digital Earth, 2023 To remove vegetation bias (VB) from the global DEMs (GDEMs), an artificial neural network (ANN)-based method with the consideration of elevation spatial autocorrelation is developed in this paper. Three study sites with different forest types (evergreen,
Yanyan Li +3 more
doaj +1 more source
Enhancing the GDEMs of Egypt Using a Surface Subtraction Approach [PDF]
, 2022 This paper proposes an enhancement approach to improve the accuracy of global Digital Elevation Models (GDEMs) in Egypt. The proposed approach is an empirical one that depends on subtracting the heights error from the original DEM.
Al-Krargy, Essam, El-Ashmawy, Nagwa
core +1 more source
Remote Sensing, 2022 3D road networks are amongst the indispensable elements of a smart city, which has been explored in various ways. However, researchers still faces challenges extracting 3D networks on a large scale.
Yang Chen +3 more
doaj +1 more source