公路网规划信息系统中时空技术研究与应用

Research and Application of Space Time Technology in Highway Network Planning Information System

时空技术随着GIS在公路网规划信息系统的深入应用 ,已引起越来越多的研究人员的重视。目前 ,GIS在处理涉及与时间有关的交通信息时存在一定的缺陷 ,因此 ,如何在GIS环境下 ,利用历年交通信息为公路网规划提供有力支持 ,是公路网规划信息系统必须解决的问题。本文系统地提出符合公路网规划信息系统的时空技术的实体结构设计和数据结构设计 ,并运用GIS中“层”

With the application of highway network planning information systems based on GIS,more and more researchers pay attention to space time technology.At present,there exist some faults in GIS which deals with traffic information related to time Therefore,how to utilize traffic information with GIS is very important for highway network planning information system.This paper presents entity structure design and data structure design of space time technology,and successfully resolves the space time problem in highway network planning information system through applying the “layer”concept in GIS