Acta Geodaetica et Cartographica Sinica >

2016 , Vol. 45 >Issue S1: 32 - 39

DOI: https://doi.org/10.11947/j.AGCS.2016.F004

Degenerate Quadtree Latitude/Longitude Grid Based on WGS-84 Ellipsoidal Facet

  • HU Bailin ,
  • WANG Chunbo ,
  • ZHAO Xuesheng ,
  • CUI Majun
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  • 1. School of Surveying and Mapping, Henan Polytechnic University, Jiaozuo 454003, China;
    2. College of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
    3. Yangzhou Vocational College of Environment and Resources, Yangzhou 225127, China

Received date: 2016-08-20

  Revised date: 2016-10-20

  Online published: 2017-03-29

Supported by

The National Natural Science Foundation of China(No.41171306)

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Abstract

For the needs of digital earth development and solving many global problems, a new discrete global grid system-DQLLG (degenerate quadtree latitude/longitude grid) was put forward, which was based on WGS-84 ellipsoidal facet. The hierarchical subdivision method, characteristics and grid column/row coordinate system were detailed. The Latitude/Longitude coordinate, area and side length of multi-resolution meshes on different subdivision levels were calculated. Then the changes of mesh areas and side lengths were analyzed and compared that with spherical DQLLG. The research indicates that the DQLLG had many excellent features:uniformity, hierarchy, consistency of direction, extensive data compatibility and so on. It has certain practicality for Global GIS in the future.

Key words： degenerate quadtree latitude/longitude grid(DQLLG); WGS-84 ellipsoidal facet; discrete global grid(DGG); grid; hierarchical subdivision

Cite this article

HU Bailin , WANG Chunbo , ZHAO Xuesheng , CUI Majun . Degenerate Quadtree Latitude/Longitude Grid Based on WGS-84 Ellipsoidal Facet[J]. Acta Geodaetica et Cartographica Sinica, 2016 , 45(S1) : 32 -39 . DOI: 10.11947/j.AGCS.2016.F004

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