导航电子地图中路口的交通矩阵与路束模型

Traffic Matrix and Road-bundle Model of Intersections in Navigable Electronic Map

导航电子地图是车载导航系统的基础.其蛛式模型使用交通矩阵对路口的交通属性进行描述,适用于车辆导航.为将电子地图数据用于车载导航系统,提出一种路口交通矩阵的计算方法.在通用GIS模型的基础上建立一种新的路束模型以反映路口的类型特征,并通过路束交通矩阵实现路口交通属性的描述.基于路束模型创建了一套蛛式路口交通矩阵的计算方法.实验表明该方法可以方便的用于路口交通矩阵计算,为驾驶者提供准确的路口引导信息,适用于车辆导航.

Navigable electronic map is the basis of In-Vehicle Navigation Systems. The spider-web model uses traffic matrix to describe the traffic attribute of intersections, therefore is more applicable for vehicle navigation. In order to use electronic map data in the in-vehicle navigation system, this paper proposed a method for calculating the traffic matrix. Firstly, a newly developed road-bundle model is built based on the common used GIS model to describe the features of different types of intersections, and also the traffic attributes using its traffic matrix. On this basis, a method is developed to calculate the traffic matrix of spider-web model. Experiment shows that the method can be conveniently applied to calculate the traffic matrix, which provides accurate driving information for drivers. The model is proved practical for In-Vehicle Navigation System.