摘要
利用传统的基于节点连接的道路网络模型来表达真实世界中的道路网络,其存在的缺陷越来越突出,大大降低了导航系统的鲁棒性。为了消除这些缺陷,提出一个新的道路网络模型,即基于虚拟节点连接的道路网络模型;其虚拟节点是汇交路段的各个端点所围成的区域,具有真实道路路口的形状。与传统模型相比,该模型更能表达真实世界道路网络中的交通流,所以它能更好地满足地图匹配理论要求。另外,该模型能很好地表达真实道路路口参数,所以它在交通规划、交通管理和交通流模拟中都有着十分广阔的应用前景。
The road network in the real world occur more and more limitations and greatly has been showed by the road network model based on node joint, which weaken the controller of navigation system. The paper puts forward a novel road network model, that is, the road network model based on virtual node joint to eliminate the limitations. The novel model apply virtual node to show multi-road converging area. The virtual node is an area enclosed by various endpoints of joining road sections, and has the same shape as real road intersection. The novel model can more effectively express the traffic flow of real-life road network than the old model based on node joint, and better satisfy the demand of the map matching theory. Moreover, the novel model can be applied to traffic planning, traffic management planning, and traffic flow simulation.
出处
《中国惯性技术学报》
EI
CSCD
2008年第4期453-457,共5页
Journal of Chinese Inertial Technology
基金
中国博士后科学基金项目--实时交通地理信息系统中的数据融合方法研究(2005038023)
关键词
虚拟节点
地理信息系统
道路网络
节点
交通流
virtual node
geographic information system
road network model
node
traffic flow
