摘要
在剖析基于球体退化八叉树格网的地球系统空间格网(SDOG-ESSG)几何分布规律的基础上,对邻近计算方法进行推演与归纳,提出了SDOG-ESSG的面邻近算法.通过引进层域及纬域等核心概念,分别对格网的几何规律作定性和定量分析,导出SDOG-ESSG的层、纬域数量、各向等价二分次数等计算方法,为后面面邻近的计算提供数学基础;在分析SDOG-ESSG几种可能的面邻近基础上,以层-列-行坐标系为媒介,通过将格网码转为层-列-行坐标,分多种情况进行讨论,给出层-列-行坐标系下的面邻近格网,并最终将格网的层-列-行坐标转换为格网码,实现任意格网码的面邻近格网计算.
This paper is to deduce and conclude the methods of neighbors finding for the SDOG- based Earth System Spatial Grid （SDOG-ESSG） based on the finding of the geometrical rules of it. Firstly, the concepts of bed-region and latitude-region were brought to get an analysis on the qualitative and quantitative rules of geometric distribution, and the calculation methods be- tween the amount of bed-regions and latitude-regions of SDOG-ESSG, and the times of equiva- lent bisection were deduced; Then, based on the analyses of several possible cases of face- neighbors and a temporal coordinate system named bed-column-row coordinate system, a meth- od of face-neighbor finding for any given grid code was proposed by transforming the codes into bed-column-row coordinates, finding the neighbors in the coordinates system, and then trans- forming the coordinates back into the code system.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2015年第2期359-366,共8页
Journal of China University of Mining & Technology
基金
国家自然科学基金重点项目(40930104)
国家自然科学基金青年项目(41301432)
中央高校基本科研业务费专项资金项目(2013QNB10)
江苏省高校优势学科建设工程项目(PAPD)
