Results 31 to 40 of about 100,121 (273)

Discrete Global Grid Systems nuovo sistema di riferimento mondiale adottato da Open Geospatial Consortium

open access: yesGEOmedia, 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
doaj   +4 more sources

Hexagonal Discrete Global Grid Systems in Topographical and Hydrological Modeling

open access: yes, 2023
Geographic Information Systems (GIS) have dominated geospatial analysis since the 1960s, where spatial phenomena were normally represented by individual thematic layers at a specific resolution, and commonly projected to a two-dimensional Cartesian coordinate system for analysis.
Li, Mingke
openaire   +2 more sources

The rHEALPix Discrete Global Grid System [PDF]

open access: yesIOP 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
  +4 more sources

THE TRANSFORM BETWEEN GEOGRAPHIC COORDINATES AND LOCATION CODES OF APERTURE 4 HEXAGONAL GRID SYSTEM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Discrete global grid system is a new data model which supports the fusion processing of multi-source geospatial data. In discrete global grid systems, all cell operations can be completed by codes theoretically, but most of current spatial data are in ...
R. Wang, J. Ben, J. Ben, Y. Li, L. Du
doaj   +1 more source

A Precision Evaluation Index System for Remote Sensing Data Sampling Based on Hexagonal Discrete Grids

open access: yesISPRS International Journal of Geo-Information, 2021
With the rapid development of earth observation, satellite navigation, mobile communication, and other technologies, the order of magnitude of the spatial data we acquire and accumulate is increasing, and higher requirements are put forward for the ...
Yue Ma   +6 more
doaj   +1 more source

Adaptive path planning method for UAVs in complex environments

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Path planning is an important problem in the field of unmanned aerial vehicles (UAVs), particularly in complex environments; however, existing path planning methods have certain limitations and yield poor results.
Zeyuan Ma, Jing Chen
doaj   +1 more source

Working with Discrete Global Grid Systems - workshop materials

open access: yes, 2021
DGGS Jupyter playground for AGILE Online 2021 Conference DGGS workshop: Working with Discrete Global Grid Systems https://agile-online.org/index.php/programme-2021/agile-workshops-2021 The main objective this workshop is introducing the attendees to ...
Alexander Kmoch
core   +1 more source

Intelligent geospatial maritime risk analytics using the Discrete Global Grid System [PDF]

open access: yesBig Earth Data, 2021
Each year, accidents involving ships result in significant loss of life, environmental pollution and economic losses. The promotion of navigation safety through risk reduction requires methods to assess the spatial distribution of the relative likelihood of occurrence.
Andrew Rawson   +2 more
openaire   +5 more sources

On the isolatitude property of the rHEALPix Discrete Global Grid System [PDF]

open access: yesBig Earth Data, 2019
Digital Earth frameworks provide a way to integrate, analyze, and visualize large volumes of geospatial data, and the foundation of such frameworks is the Discrete Global Grid System (DGGS). One approach in particular, the rHEALPix DGGS, has the rare property of distribution of cell nuclei along rings of constant latitude (or isolatitude rings ...
David Bowater, Emmanuel Stefanakis
openaire   +2 more sources

Encoding Conversion Algorithm of Quaternary Triangular Mesh

open access: yesISPRS International Journal of Geo-Information, 2021
In the process of global information construction, different fields have built their own discrete global grid systems (DGGS). With the development of big data technology, data exchange, integration, and update have gradually become a trend, as well as ...
Yihang Chen   +4 more
doaj   +1 more source

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