Results 21 to 30 of about 48,284 (242)
Indexing Mixed Aperture Icosahedral Hexagonal Discrete Global Grid Systems [PDF]
ISPRS International Journal of Geo-Information, 2020 Discrete global grid systems (DGGSs) are an emerging multiresolution 3D model used to integrate and analyze big earth data. The characteristic of multiresolution is usually realized by hierarchically subdividing cells on the sphere using certain ...
Rui Wang +3 more
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The rHEALPix Discrete Global Grid System [PDF]
IOP Conference Series: Earth and Environmental Science, 2016 In light of the new standard for Discrete Global Grid Systems (DGGS) currently being proposed by the Open Geospatial Consortium (OGC), we revisit our earlier work on defining the rHEALPix DGGS. This paper briefly restates the definition of the rHEALPix DGGS and shows how the cell geometries, and schema for cell identifiers are both compliant with the ...
Gibb, Robert +2 more
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Applied open-source Discrete Global Grid Systems
AGILE: GIScience Series, 2022 Abstract. Discrete Global Grid Systems (DGGS) are spatial reference systems that use a hierarchical tessellation of cells to partition and address the globe and provide alternative spatial data format and indexing methods as compared to traditional vector and raster spatial data.
Alexander Kmoch +3 more
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A Topology Preserving Gridding Method for Vector Features in Discrete Global Grid Systems [PDF]
ISPRS International Journal of Geo-Information, 2020 Topological distortion seriously affects spatial cognition. To solve this problem caused by the integration of vector features in discrete global grid systems (DGGs), a topology-preserving gridding method for vector features is proposed. The method proposed determines the topological distortion according to the relationship between grid cells and then ...
Zhou, Liangchen +3 more
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Categorization and Conversions for Indexing Methods of Discrete Global Grid Systems [PDF]
ISPRS International Journal of Geo-Information, 2015 Digital Earth frameworks provide a tool to receive, send and interact with large location-based datasets, organized usually according to Discrete Global Grid Systems (DGGS). In DGGS, an indexing method is used to assign a unique index to each cell of a global grid, and the datasets corresponding to these cells are retrieved or allocated using this ...
Amiri, Ali +2 more
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Drivers of global irrigation expansion: the role of discrete global grid choice [PDF]
Hydrology and Earth System SciencesGlobal statistical irrigation modeling relies on geospatial data and traditionally adopts a discrete global grid based on longitude–latitude reference. However, this system introduces area distortion, which may lead to biased results.
S. Wagner +5 more
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Modeling and Expression of Vector Data in the Hexagonal Discrete Global Grid System [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 The Discrete Global Grid System (DGGS) is a new type of global spatial data model and is the extension of the plane grid on a sphere. The hexagon is usually used in the construction of DGGS for its advantageous geometric structure.
X. C. Tong +3 more
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Wāhi, a discrete global grid gazetteer built using linked open data
International Journal of Digital Earth, 2017 Discrete global grid systems have become an important component of Digital Earth systems. However, previously there has not existed an easy way to map between named places (toponyms) and the cells of a discrete global grid system. The lack of such a tool
Benjamin Adams
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MPC-based control strategy of PV grid connected inverter for damping power oscillations
Frontiers in Energy Research, 2022 With global warming and the depletion of fossil energy, the development of photovoltaic (PV) energy has attracted attention in many countries. However, when large-scale PV power stations are connected to the power grid through inverters, the inertia and ...
Xichang Wen +4 more
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GEOmedia, 2018 The Open Geospatial Consortium (OGC) announced the adoption of the new Discrete Global Grid System (DGGS) standard, which aimed to report geospatial information on earth, in a different way.
Renzo Carlucci
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