基于特征的非平面GIS-T数据模型在中心服务范围中的应用

交通网络具有极强的空间性与时序性。交通系统运用现代化的空间分析工具来提高对它的管理以及工作效率，是城市建设、交通建设部门普遍关注的问题。GIS-T专门为交通网络问题而设计，运用了专门的交通建模手段，在技术上加强了几何空间网络概念及线的叠置，并有一套以动态分段为代表的专门技术，是智能交通系统的有机组成部分，是辅助城市交通管理与规划的有效技术手段，特别是与其它高新技术，如：GPS、无线通讯、Internet、虚拟显示等进行有机结合后，能为建立广泛的实时数字交通信息用户服务体系。

The Application of Non-planar GIS-T Data Model Based on Characteristic in Center Service Area

Traffic network has strong extensity and Continuation. Traffic system uses modernizing spatial tools to raise its management and work efficiency, the problem is common paid close attention to. GIS-T is designed for traffic network problem technically, which uses technical means of building model, is component parts of intellective traffic system, and is the effective technique means of assisting city traffic management and planning. Especially, combining with other high and new technique such as GPS, radio communication, Internet and virtual actuality, which can supply effective technique support for building wide real-time digital traffic information user service.