| 导航数据库中空间索引建立方法研究 |
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| 引用本文： | 孙晓光.导航数据库中空间索引建立方法研究[J].测绘与空间地理信息,2008,31(3). |
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| 作者姓名： | 孙晓光 |
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| 作者单位： | 辽宁省基础地理信息中心,辽宁,沈阳,110034 |
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| 摘 要： | 针对导航数据库中传统空间索引建立方法存在的问题,提出了一种基于两级交错式网格划分的空间索引建立方法。详细分析了该算法的实现原理,并讨论了与之相关的网络路段信息的提取与存储技术。实验结果表明,采用该方法可有效减少空间数据索引表的数据量,提高检索效率,增强空间数据提取的准确性。
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| 关 键 词： | 导航数据库 空间索引 路网 地图匹配 |
The Research of Creating Method of Spatial Index in the Navigable Database |
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| SUN Xiao-guang.The Research of Creating Method of Spatial Index in the Navigable Database[J].Geomatics & Spatial Information Technology,2008,31(3). |
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| Authors: | SUN Xiao-guang |
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| Abstract: | This paper analyzes the problems of creating method of traditional spatial index in the navigable database and suggests a new kind of creating method of spatial index based on two-level interleaving grid.It analyzes the principle of this algorithm and discusses the relating retrieval and storage technology of road segment information.The experimental result indicates that the use of this method can decrease the data volume of spatial index table effectively,improve index efficiency and increase the correctness of retrieving spatial data. |
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| Keywords: | navigable database spatial index road network map matching |
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