Location coding and indexing aperture 4 hexagonal discrete global grid based on octahedron

doi:10.11834/jrs.20110367

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Location coding and indexing aperture 4 hexagonal discrete global grid based on octahedron
Vol. 15, Issue 6, Pages: 1125-1137(2011)
Published： 2011 ，
DOI： 10.11834/jrs.20110367

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[1]白建军.基于正八面体的四孔六边形球面格网编码及索引[J].遥感学报,2011,15(06):1125-1137.

Location coding and indexing aperture 4 hexagonal discrete global grid based on octahedron. [J]. Journal of Remote Sensing 15(6):1125-1137(2011)
[1]白建军.基于正八面体的四孔六边形球面格网编码及索引[J].遥感学报,2011,15(06):1125-1137. DOI： 10.11834/jrs.20110367.

Location coding and indexing aperture 4 hexagonal discrete global grid based on octahedron. [J]. Journal of Remote Sensing 15(6):1125-1137(2011) DOI： 10.11834/jrs.20110367.

摘要

将正八面体上下相邻的两个三角形面片合并成一个四分体

建立二维坐标系

在此基础上采用六边形格网单元的层次编码方案

分析了不同位置格网单元的编码特征

提出了一种"孔4双轴查找算法"

实现了相应的邻接单元及父、子单元查找

并进行了相关实验及对比分析。结果表明

该算法和传统的Vince算法相比较

邻接单元查找速度提高了约900倍

父单元和子单元的查找速度均提高了约120倍。

Abstract

Take octahedron as an example

the aperture 4 hexagonal discrete global grids（A4HDGGs） is analyzed in this paper.The two adjacent triangle patches（up and down） in the platonic polyhedron are merged into one quadrilateral to create a twodimensional coordinate system

and the hierarchical location coding on A4HDGGs is therefore put forward.Firstly

the coding characteristics of A4HDGGs in different positions are analyzed.Secondly

a searching algorithm for A4HDGG

called A4-2D-coordinates

is given in details.Finally

the experimental analysis is developed.The efficiency of neighbor-finding

children-finding

and parent-finding in this algorithm have been validated by the experimental results to improve respectively by 900 times

120 times and 120 times compared with traditional Vince algorithm.

关键词

正八面体孔径六边形全球离散格网编码索引

Keywords

octahedronaperturehexagonal discrete global gridlocation codingindexing

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