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基于GPS轨迹点与道路网络拓扑数据,利用GIS技术进行OD点和交通通道的调查研究。利用货运车辆GPS轨迹数据,分析轨迹点的时间、速度及其空间分布特征,实验并确定合理的阈值过滤出点簇,生成OD点;用轨迹点捕获含有拓扑关系的临近路段,通过最短路径算法生成货运车辆沿道路的线型轨迹,最终获得完整的货运车辆出行通道调查数据。与传统交通调查方法相比,该方法的组织实施环节大大减少,调查数据和成果更加客观可靠,是一种通过信息技术进行交通调查研究的全新尝试。 更多还原

【Abstract】 Traffic survey is the foundation of urban transportation plan,construction and management.In the traditional study of traffic survey,a lot of manpower and material resources are required.After studying the research progress in the traffic survey,based on the GPS track points,road network topology data,and GIS technology,traffic technology research of OD points and traffic channel was realized in this paper.1) By using freight vehicles GPS track data under customs′ monitoring,the time,speed and m...