A mathematical model is suggested to balance the beeline and the circular curve roaddata. Furthermore, the scheme of data organization for the planning roads is suggested.
还提出了一种针对直线和圆曲线的道路数据平差模型，以及规划道路数据组织方案。
2
Preliminary research is made on the organization of the roaddata of the shortest path of urban roads, the relevant technique and methods, and an experimental environment is built.
对实现城市道路最短路径的道路数据的组织、相关技术和方法作了初步的研究，并构建了试验环境。
3
The map matching algorism, the fusion of the roaddata in digital map and the positioning data given by GPS can effectively improve the positioning accuracy in navigating system for vehicle.