The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XL-4/W2
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-4/W2, 77–82, 2013
https://doi.org/10.5194/isprsarchives-XL-4-W2-77-2013
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-4/W2, 77–82, 2013
https://doi.org/10.5194/isprsarchives-XL-4-W2-77-2013

  25 Oct 2013

25 Oct 2013

Sphere Shell Space 3D Grid

G. Wan, X. F. Cao, F. Li, and K. Li G. Wan et al.
  • Zhengzhou Institute of Surveying and Mapping, 450052 Zhengzhou City, Henan Province, China

Keywords: Sphere shell, global spatial grid, discrete global grid, spheroid spatial grid, grid subdivision, grid coding

Abstract. The global spatial grid is an important spatial data model for Digital Earth. Discrete Global Grid provides a means of rasterizing the earth surface, and then has been considered as the basic data model for digital globes. But Discrete Global Grid is only confined to the surface, because it can not reach to the earth inside and outside. The Sphere Shell Space 3D Grid (SSSG) proposed here provides a new spatial reference framework for the whole earth 3D space for Digital Earth. The basic conceptions and requirements of SSSG have been discussed in details. It is designed to represent spatial objects distributed from underground, land, sea, air to space within a uniform framework, and also to uniformly organize various kinds of spatial information in each earth sphere shells.