AR^2W^2—SFC模型的快速实现与研究  

Rapid Realization and Research of AR^2W^2-SFC Curve

作　　者：史志敏[1] 高晖 富斌 王彦广[1] 

机构地区：[1]中国空间技术研究院,北京100094 [2]天泰雷兹科技(北京)有限公司,北京100080

出　　处：《交通运输系统工程与信息》2006年第2期31-37,共7页Journal of Transportation Systems Engineering and Information Technology

摘　　要：GIS技术在ITS中的成功应用在于对海量空间地理数据的管理,对空间数据的合理组织及快速的空间对象检索。为空间数据建立索引是管理空间数据、提高检索速度的一个重要方面.本文在AR2W2-SFC曲线模型的基础上,利用标签方法在算法上实现了该曲线模型,并将该模型应用于空间索引.通过实验研究发现,在四叉树高度较低的情况下,AR2W2-SFC曲线作为点对象的空间索引的性能优于Hilbert曲线.Global Information System （GIS） being used successfully in ITS is due to managing massive spatial geography data, reasonably organizing spatial data, and rapidly searching spatial objects. Building spatial indexing to spatial data is an important way of managing spatial data and advancing search speed. Based on the AR^2W^2-SFC curve model, this paper puts forward an implemented method by Vertex-labeling and applies the model to the spatial indexing. After the experimental stud）, it is found that the performance of indexing of AR^2W^2-SFC curve is better than that of Hilbert curve when the height of quad-tree is lowered and the curve is adopted as the spatial indexing of point objects.

关 键 词：智能交通系统 空间填充曲线 空间索引 空间数据库 地理信息系统 

分 类 号：U491[交通运输工程—交通运输规划与管理]