摘要
道路交叉口的网络拓扑表达是交通GIS中的一个难点.首先分析了几种典型模型,并在Sheffi模型的基础上,提出一种道路交叉口的三维拓扑关系表达模型.模型采用8个节点16条弧段来表达道路交叉口的拓扑关系,保持了几何与拓扑的一致性,较好地处理了道路在交叉口处具有不同转向费用的问题,同时也能表达道路在交叉口允许调头的拓扑关系,提高了路径规划的准确度.
Representation of road network topology in the intersection is a difficultpoint in transportation GIS. After analyzing some typical models, a model representing 3D topological relation based on Sheffi model is proposed. Topology in the road crossing is expressed with 8 nodes and 16 arcs, which retains the congruity of geometry, thus solving the problem concerning the different turning charge in the road crossings, and rendering topological relationship of road switching in the intersection, which improves the accuracy of route plan.
出处
《昆明理工大学学报（理工版）》
2006年第6期8-11,16,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
关键词
交通网络
道路交叉口
三维拓扑
transportation network
intersection
3 D topology
作者简介
陈厚元（1973-），男，工程师．主要研究方向：测绘管理及地理信息系统．E-mail：zuoxq@163．com
