GIS-T线性数据模型研究现状与趋势  

Progress and Trend of Research on GIS-T Linear Data Model

作　　者：李清泉[1] 左小清[1] 谢智颖[1] 

机构地区：[1]武汉大学空间信息与数字工程研究中心

出　　处：《地理与地理信息科学》2004年第3期31-35,共5页Geography and Geo-Information Science

基　　金：国家自然科学基金资助项目(40271093)

摘　　要：目前GIS-T已有若干线性数据模型,但大多数据模型还没得到实际应用,仍存在一些问题需要解决。该文分析讨论GIS-T线性数据模型,介绍了具有代表性的几种模型,并将各模型对车道及时态的支持进行比较分析和评估。指出当前GIS-T线性数据模型普遍存在的问题,提出基于三维的GIS-T时空数据模型是未来的发展趋势。The geographical information system for transportation (GIS-T) has been widely used in the design and management of road networks and other facilities today.However,not all GIS-T linear data models deploy well in application,and there are still some problems to be resolved.In this paper,GIS-T linear data models are reviewed firstly,and then several typical data models are discussed in detail.The paper makes a function requirement evaluation and comparison among these linear data models,and summarizes some ubiquitous issues with respect to the current GIS-T linear data models.More efforts should to do in developing the 3D and spatial/temporal data models.

关 键 词：GIS-T 线性数据模型 时空模型 线性参照系统 动态分段 

分 类 号：P208[天文地球—地图制图学与地理信息工程]