轨迹-路网动态拓扑过程模型及其交通信息查询分析

Trajectory-Network Dynamic Topological Process Model and Its Application in Traffic Information Analysis

车辆行驶轨迹与路网相互关联,形成复杂的时空动态拓扑过程。首先从轨迹-道路拓扑状态入手,对车辆轨迹在路网中的动态拓扑过程进行建模。然后基于该模型,进一步探讨了车辆轨迹相对于路网的拓扑关系提取方法,并设计了相应关系模式,从而采用关系型数据库来组织管理大规模轨迹-路网动态拓扑过程。最后,从道路交叉口分析、道路交通流量分析、道路通行时间分析等多个角度,讨论了轨迹-路网动态拓扑过程模型在交通信息查询分析中的应用。

Trajectory of moving car data forms complex and dynamic topological process when it is correlated with road network.In this paper,we first model the dynamic topological process of the driving activity based on well-defined trajectory-road topology.Then,we discuss the method of extracting dynamic topological process,and the relational scheme to organize it.Finally,three typical kinds of queries are proposed to show the application potential of this model on traffic information analysis.