| 球面格网系统特征分析及比较 |
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| 引用本文： | 白建军,孙文彬.球面格网系统特征分析及比较[J].地理与地理信息科学,2011,27(2):1-5. |
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| 作者姓名： | 白建军 孙文彬 |
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| 作者单位： | 1. 陕西师范大学旅游与环境学院,陕西,西安,710062
2. 中国矿业大学(北京)地测学院,北京,100083 |
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| 摘 要： | 球面格网系统是一种新型栅格数据模型。在全面检索和分析前人相关研究成果的基础上,将球面格网系统分成4种类型:基于经纬线划分的格网系统、基于正多面体划分的格网系统、基于Voronoi划分的格网系统和混合格网系统;并针对各种不同类型的格网,分析了同级格网单元的空间几何特征及不同级别格网之间的层次嵌套等特性。通过对比分析,给出不同格网系统的优缺点及其适用领域,认为不存在满足所有需求的通用的格网系统,相关应用只能针对具体情况,选用最适宜的格网系统。
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| 关 键 词： | 球面格网系统 栅格数据模型 几何特性 层次嵌套性 |
Character Analysis and Comparison of Global Grid System |
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| BAI Jian-jun,SUN Wen-bin.Character Analysis and Comparison of Global Grid System[J].Geography and Geo-Information Science,2011,27(2):1-5. |
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| Authors: | BAI Jian-jun SUN Wen-bin |
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| Institution: | 1.College of Tourism and Environment,Shaanxi Normal University,Xi′an 710062;2.College of Mapping and Land Use Sciences,China University of Mining and Technology,Beijing 100083,China) |
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| Abstract: | As a new spherical raster data model,global grid system has attached more and more important in many research areas about global issues.Based on an overall retrieval analysis of previous researches,in this paper,global grid system is classified into four classes,i.e.global grid system respectively based on latitude & longitude,plato polyhedron,Voronoi and mix global grid system.As for different global grid system,their unit geometry properties at the same level and hierarchical nesting feature have been analyzed.The advantage and disadvantage of different grid system in different applied fields are given through comparative analysis,and there are not any global grid system fulfilled all application,global grid system should be constructed respectively based on specific application. |
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| Keywords: | global grid system raster data model geometry properties hierarchical nesting feature |
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