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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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面向路网连通关系的车辆轨迹数据查询技术研究
DOI: 10.11834/jig.20090704
Keywords: 轨迹数据,索引结构,查询语言,路网连通关系
Abstract:
定位及通信技术的发展使获取和传输移动车辆的轨迹信息成为可能。从车辆轨迹数据中可以提取出大量的交通信息，这些信息是对交通状况的一个直接和全面的反映。但由于轨迹数据固有的网络特性及时空特性，使针对此类数据的查询成为一个难点，其中关键技术包括建立用于车辆轨迹数据的索引结构及其对应的轨迹数据查询语言。在比较现有轨迹数据索引结构的基础上，对轨迹数据查询语言的分类及其与索引结构之间的调用关系进行了初步的探讨，提出了面向连通关系的查询语言（connectivity-orientedquerylanguage,CQL）的定义、分类及实现方法，并简要讨论了车辆轨迹数据查询原型系统的结构和实现方法。
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