Results 11 to 20 of about 55,347,872 (245)

Leading Progress in Digital Terrain Analysis and Modeling

open access: yesISPRS International Journal of Geo-Information, 2019
Digital Terrain analysis (DTA) and modeling has been a flourishing interdisciplinary field for decades, with applications in hydrology, geomorphology, soil science, engineering projects and computer sciences.
Giulia Sofia   +3 more
doaj   +2 more sources

Design of data structures for terrain reference navigation [PDF]

open access: yes, 1994
This thesis describes the design of a data structure for use with Digitised Terrain Elevation Data (DTED) in Terrain Reference Navigation (TRN) systems.
Gia, M. C.
core   +7 more sources

Spatial scale analysis of landscape processes for digital soil mapping in Ireland [PDF]

open access: yes, 2013
Soil is one of the most precious resources on Earth because of its role in storing and recycling water and nutrients essential for life, providing a variety of ecosystem services.
Cavazzi, Stefano
core   +7 more sources

Effective Identification of Terrain Positions from Gridded DEM Data Using Multimodal Classification Integration

open access: yesISPRS International Journal of Geo-Information, 2018
Terrain positions are widely used to describe the Earth’s topographic features and play an important role in the studies of landform evolution, soil erosion and hydrological modeling.
Ling Jiang   +5 more
doaj   +1 more source

TERRA: Terrain Extraction from elevation Rasters through Repetitive Anisotropic filtering

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2020
Over the past decades, several filters have been developed to derive a Digital Terrain Model (DTM) from a Digital Surface Model (DSM), by means of filtering out aboveground objects such as vegetation.
Anton Pijl   +5 more
doaj   +1 more source

DEM in quantitative analysis of structural geomorphology: application and prospect

open access: yesDizhi lixue xuebao, 2021
Digital elevation model (DEM) is used to realize the digital simulation of terrain surface (i.e. the digital representation of terrain surface shape) through the limited terrain elevation data.
CAO Pengju   +5 more
doaj   +1 more source

Soil-terrain modelling and erosion analysis at field scale level, a case study

open access: yesSoil and Water Research, 2009
Pedometrical methods and digital soil mapping represent a progressive approach to the evaluation of various terrain-related soil processes. A detailed digital terrain model was used for the analysis of erosion - sedimentation situation and description of
Tereza Zádorová   +2 more
doaj   +1 more source

Probability maps as a measure of reliability for indivisibility analysis [PDF]

open access: yesSpatium, 2005
Digital terrain models (DTMs) represent segments of spatial data bases related to presentation of terrain features and landforms. Square grid elevation models (DEMs) have emerged as the most widely used structure during the past decade because of their ...
Joksić Dušan, Bajat Branislav
doaj   +1 more source

Statistically Robust Detection and Evaluation of Errors in DTMs [PDF]

open access: yes, 2011
Digital Terrain Models (DTMs) have been an important topic in the study of ground surface landform, therefore precise evaluation of errors in DTMs production is a critical factor to assess the quality of DTM. In this paper the attribute of errors in DTMs
Uwe Stilla   +7 more
core   +1 more source

Improvement of Terrain Entropy Calculation for Grid Digital Elevation Models Considering Spatial Structural Features

open access: yesApplied Sciences
Existing methods for calculating terrain entropy in grid digital elevation models (DEMs) often face computational anomalies in specific topographies within small windows.
Fangbin Zhou   +3 more
doaj   +1 more source

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