The Subdivision of Global Multi-resolution Hexagonal Grid and the Rules of Address Coding

Firstly,the paper introduces the application requirement of Global Grid System, discusses the basic element of regular polyhedron subdivision.On the basis of them,the new designing steps and creating algorithm of storing-convenient,multi-resolution level index,potential management in icosahedrons dividing,hexagon unit global grid system are proposed.Then,shortcomings of existing hexagonal index mechanism are analyzed and a new composing means is developed for spherical hierarchical structure,on those bases,an address coding means of spherical hierarchical structure is designed,we succeeded constructing the grid coding space,discussing conversion problem from geodetic coordinates system to grid coding,proposing and realizing conversion algorithm based on hierarchical recursive discrete grid coordinate system,the veracity and reliability of computation can be assured.This structure can express and process multi-resolution global grid spatial data seamlessly.