| 基于单元复制的通用化离散格网系统生成算法 |
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| 引用本文： | 雷毅,童晓冲,范帅博.基于单元复制的通用化离散格网系统生成算法[J].地理信息世界,2018(2):60-65. |
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| 作者姓名： | 雷毅 童晓冲 范帅博 |
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| 作者单位： | 信息工程大学 地理空间信息学院,河南 郑州,450000 |
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| 摘 要： | 本文提出一种基于单元复制的通用化格网系统生成新算法。其核心是采用"简单单元复制+有效区域控制"。首先,建立坐标系,确定待计算剖分格网系统的种类,从而确定格网剖分类型的3个关键因素。在此基础上,确定各类多尺度格网有效控制边界。然后对多尺度格网进行合适的数学变换,计算单一三角面格网系统单元节点坐标,并建立不同层级单元节点的关联关系。最后,以六边形格网为例展开验证,直接生成正二十面体表面格网。实验结果证明,该算法具有很好的通用性,可以通过调整相应的起算参数,生成各类多尺度格网。避免了传统定制算法的局限性,实现了统一化生成各类格网系统的目标,为不同剖分类型全球离散格网系统间互操作性问题研究提供了一种解决思路。
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| 关 键 词： | 单元复制 区域控制 起算参数 六边形格网 正二十面体 unit copy area control initial parameter hexagonal grid icosahedron |
Universal Discrete Grid System Generation Glgorithm Based on Unit Duplication |
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| LEI Yi,TONG Xiaochong,FAN Shuaibo.Universal Discrete Grid System Generation Glgorithm Based on Unit Duplication[J].Geomatics World,2018(2):60-65. |
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| Authors: | LEI Yi TONG Xiaochong FAN Shuaibo |
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| Abstract: | This paper proposes a new universal algorithm for generating discrete grid system based on unit duplication. The core of the algorithm is "simple unit duplication + effective area control". First, the establishment of coordinate system to determine the type of grid system is calculated to determine the three key factors. On this basis, various types of multi-scale grids are determined to effectively control the boundary. Then, the multi-scale grid is properly transformed to the coordinates of the unit nodes in a single triangular grid system and established the association of unit nodes at different levels. Finally, the article verifies the hexagonal grid as an example to directly generate the icosahedron surface grid. Experimental results show that the algorithm has good generality and can generate various multi-scale grids by adjusting the correspondinginitial parameters. It avoids the limitations of the traditional custom algorithms and achieves the goal of unified production of various types of grid systems. It provides a solution for the interoperability problems of different partition type global discrete grid systems. |
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