Code Operation Scheme for the Icosahedral Aperture 4 Hexagonal Grid System

WANG Rui; BEN Jin; DU Lingyu; ZHOU Jianbin; LI Zhuxin

doi:10.13203/j.whugis20180191

Volume 45 Issue 1

Jan. 2020

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Geomatics and Information Science of Wuhan University > 2020 > 45(1): 89-96. > DOI: 10.13203/j.whugis20180191

WANG Rui, BEN Jin, DU Lingyu, ZHOU Jianbin, LI Zhuxin. Code Operation Scheme for the Icosahedral Aperture 4 Hexagonal Grid System[J]. Geomatics and Information Science of Wuhan University, 2020, 45(1): 89-96. DOI: 10.13203/j.whugis20180191

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Code Operation Scheme for the Icosahedral Aperture 4 Hexagonal Grid System

1.
Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China
2.
Troops 61287, Chengdu 610000, China

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The National Natural Science Foundation of China 41671410

the National Key Research and Development Program of China 2018YFB0505301

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Author Bio:
WANG Rui, PhD candidate, specializes in spatial data model. E-mail:wr_paper@126.com
Corresponding author:
BEN Jin, PhD, professor. E-mail:benj@lreis.ac.cn
Received Date: December 15, 2018
Published Date: January 04, 2020

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Abstract

Discrete global grid systems(DGGS) are digital reference models with multi-resolution for earth and its structure supports the fusion processing of multi-source geospatial information. The icosahedral DGGS have aroused wide attention for their excellent geometric properties and the research difficulty is the code operation scheme for the spherical hexagonal grid system currently. It is proved that DGGS based on the regular polyhedrons are topologically equivalent to the relative regular polyhedral grid systems and their schemes for code operation are topologically equivalent as well. According to this, combining the characteristics of the aperture 4 hexagonal grid system on the surface of the icosahedron, this paper defines vertex tile and face tile based on hexagon lattice quad tree and proposes the code operation scheme for the icosahedral aperture 4 hexagonal grid system. This scheme realizes the cross-face operation of cells using code operation with high efficiency and overcomes the drawback of existing schemes brought by the use of floating numbers for cross-face operation with low efficiency. In addition, the search efficiency for cross-face adjacent cells is about 19.6 times that of hexagonal quad balanced structure.
- discrete global grid system,
- regular icosohedron,
- hexagon,
- code operation

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