Dandelion格网：一种新型立体格网设计方案

Dandelion Grid： A New Solid Grid Design Scheme

随着空间探索技术和数据获取手段的飞速发展，对地球的研究已经不仅仅局限于地表，而是趋向于海陆空地下一体化发展。因此，全球离散格网开始由球面格网发展到球体格网。然而，现阶段球体格网单元与单元之间的联系比较复杂。于是，一种新的三维立体剖分格网——Dandelion格网的设计方案经探讨提出。Dandelion格网仿蒲公英结构，从中心点发射线构成球面单元部分，从球心发射线截取它的径向距离，从而构成一个单元结构体。由于其特殊构造，单元之间的联系相对其他格网更加明朗简单。本文重点对Dandelion格网的构建方案进行了深入研究。

With the fast development of space exploration technology and data acquisition method, the researches on earth are not only restricted to the surface but also extended to the integration of ocean, land, air and underground, and the DGGS （Discrete Global Grid System） develops from plan grid to solid grid. However, the existing solid grids have very complex relationships between cells. In this paper, the Dandelion Grid, a new solid grid imitating the structure of dandelion is proposed. The cell looks like the floss of the plant, diverging from a common centre and the depth of the cell is the radial distance from the sphere centre. Due to this special structure, the relationships between cells are simpler than other grids. The research is focused on the construction of the grid.