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Digital elevation model

A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid. A "global DEM" refers to a discrete global grid. DEMs are used often in geographic information systems (GIS), and are the most common basis for…

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Overview

Terminology

Types

Production

Uses

Sources

DEM file formats

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Map overview Semantic statistics

Digital elevation model

Nodes126
Edges125
Triples90
Avg. degree1.98
Density0.015873
Components1

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Digital elevation model

Top relations

related to Further reading · 31
Digital elevation model → Applications, Archived, ASTER GDEM2, ASTER-GDEM, Australia, Australian Journal, Australian National Gravity Database, Bibcode, Chapter, Comparison, Earth Sciences, Featherstone, Filmer, Gallant, GEODATA DEM-9S, Hirt, In Wilson, ISBN, June, New York
related to Satellite mapping · 20
Digital elevation model → Advanced Spaceborne Thermal Emission, ASTER, Cosmo SkyMed, Earth Observation Satellite, ERS, European Remote-Sensing Satellite, HRS, Later, One, Other, RADARSAT-1, Reflection Radiometer, SAR, Shuttle Radar Topography Mission, SPOT5, SRTM, Terra, TerraSAR-X, The SPOT, VNIR
related to Terminology · 17
Digital elevation model → ASTER GDEM, CGIAR, DEM, DSM, DSMs, DTM, DTMs, ERSDAC, In, Most, Other, Some, Spot Image, SRTM, There, TIN, USGS
related to Production · 7
Digital elevation model → DEM, DEMs, GPS, Mappers, Note, Older, This
related to Rendering · 6
Digital elevation model → DEM, In, Some, The, This, Visualizations

Important terminology Word statistics

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Important terminology

data elevation dem digital terrain resolution global model surface dems srtm radar used dsm satellite may grid often dtm also

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
SRTM or the ASTER GDEM are originally DSMsinstance ofSome datasets0.80text
although in forested areasinstance ofSome datasets0.80text
SRTM reaches into the tree canopy giving readings somewhere between a DSMinstance ofSome datasets0.80text
a DTMinstance ofSome datasets0.80text
photogrammetryinstance ofThe DEM could be acquired through techniques0.80text
lidarinstance ofThe DEM could be acquired through techniques0.80text
IfSAR or InSARinstance ofThe DEM could be acquired through techniques0.80text
land surveyinginstance ofThe DEM could be acquired through techniques0.80text
etcinstance ofThe DEM could be acquired through techniques0.80text
Digital elevation modelrelated to Further readingWilson0.60section
Digital elevation modelrelated to Further readingGallant0.60section
Digital elevation modelrelated to Further readingChapter0.60section

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