机构地区: 中山大学
出 处: 《测绘科学技术学报》 2011年第6期442-445,共4页
摘 要: 通过对道路要素进行分类的方法,以非平面路网数据模型为基础,提出交通路网概念模型及数据模型,对立体交叉口中各个跨线桥与匝道等非平面道路要素进行描述,正确表达道路之间的拓扑关系。通过建立结点-可达结点关系,并加载交通规则,建立面向城市道路指路标志系统的非平面交通路网数据模型。把该模型应用于广州市立交指路标志系统中,实现了立交路网指路标志的自动生成。 Based on the non-planar road network data model,dividing the road elements into two categories,every section of a road network,such as viaducts and ramps in interchange,was correctly expressed.The topology of roads was also described.The relationship of each node and its adjacent nodes or reaching nodes was built up,and the traffic rules was added to put forward a non-planar traffic road network data model for road guide sign system.The model was applied in the interchange road guide sign system of Guangzhou,and the automatically building of road guide signs was achieved.