The term digital elevation model or DEM refers to any digital and numerical representation of a topographic surface, but most often it refers specifically to a raster or regular grid of spot heights. Digital terrain model or DTM is a more generic term for any digital representation of a topographic surface, but it is used very rarely.
In digital elevation models, resolution or the distance between adjacent grid points is a critical parameter. The best resolution available is 30 m, with a vertical resolution of 1 m. With the help of digital elevation models, the coverage of the entire globe along with the ocean floor can be obtained at various resolutions. After filtration of non-ground points such as bridges and roads, smooth digital elevation model can be generated. The builds like power lines, towers & buildings, trees & other type of vegetation are not extruded in a digital elevation model. Different types of digital elevation models such as regular square grids, triangulated irregular networks (TIN) and contours, etc. are used for digital representation of topographic surfaces. Depending on their end-use industries, different kind of digital elevation models are employed for different applications. For instance, gridded digital elevation models are mainly used in automatic delineation of drainage networks and catchment areas, soil moisture estimation, development of terrain characteristics and automated extraction of parameters for hydrological or hydraulic modeling.
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Global Digital Elevation Models Market: Dynamics
Digital elevation models are an important numerical representation used across various end-use industries such as telecom, aerospace & defense, telematics, mining & oil and tourism, etc. Upsurge in different end-use product demand & industrial development are the two crucial factors boosting the demand for digital elevation models, in turn, also propelling the overall growth of the global digital elevation models market.
The cost of high resolution digital elevation models is very high. However, the end users are ready to pay several dollars for products with high resolution because they need these products to fulfill their demands and requirements. This is precisely why market players are trying to develop high resolution and high accuracy digital elevation models as they are expected to register high demand in near future. However, the market for low accuracy digital elevation models is still expected to hold a significant share. Currently, the market is expected to grow with developing distribution and marketing strategies. However, this market is not well structured and organized yet.
Global Digital Elevation Models Market: Segmentation
The global digital elevation models market can be segmented on the basis of structure, resolution, applications and end-use industries. On the basis of structure, global digital elevation models market can be segmented into gridded, triangulated irregular networks (TIN) and contour. On the basis of resolution, global digital elevation models market can be segmented into high resolution digital elevation models (height accuracy better than 5m) and low resolution digital elevation models. On the basis of application, global digital elevation models market can be segmented into telecommunication, planning and construction, air traffic routing & navigation, meteorological services, geological exploration, multimedia applications & computer games, thematic mapping and, geographic information system (hydrological modelling, terrain stability, soil mapping). On the basis of end-use industries, global digital elevation models market can be segmented into telecom, aerospace & defense, telematics, mining & oil and tourism, etc.
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Global Digital Elevation Models Market: Region-wise Outlook
The global digital elevation models market is segmented into 5 key regions namely North America, Latin America, Middle East & Africa, Asia-Pacific and Europe. North America and Europe are anticipated to remain key regions in the global industrial digital elevations models market throughout the forecast period. Asia-Pacific and MEA are expected to witness fastest growth due to rapid development in telecom and mining & oil industry respectively.
Global Digital Elevation Models Market: Market Participants
Some of the market participants involved in the digital elevation models market include Harris MapMart, The National Map, AltaLIS Ltd., Intermap Technologies, LAND INFO Worldwide Mapping, LLC, CompassData, Inc., DHI GRAS A/S, Apollo Mapping, CATUAV, NIRAS Gruppen A/S GAMMA Remote Sensing Research and Consulting AG, etc.
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