互联网时代的地理信息系统

GEOGRAPHIC INFORMATION SYSTEMS IN THE INTERNET AGE

本文通过分析近年来信息技术和地理信息系统（ＧＩＳ）的进展，探讨在互联网时代的地理信息系统的发展趋势和技术，提出了以构件化的分布式地理信息系统的发展方向，并以新的概念探讨了以互联网为平台的ＧＩＳ构件模型和客户－服务器模型为基础的ＧＩＳ服务模型。在此基础上讨论了以ＣＯＲＢＡ为载体的基于万维网的ＧＩＳ的体系结构、应用前景和对ＧＳＩ产业的影响。

Based on an analysis of the evolution of Information Technology (IT) and Geographic Information Systems (GIS) in recent years, this paper explores the technical trends in GIS in the Internet age and discusses three software models which may deeply influence both users and developers of GIS products: component model, service model, and distributed model. Previous monolithic GIS software products can now be subdivided into GIS components which provide specific services and allow application developers to assemble these components quickly to make their business systems. A new Webbased GIS architecture on the CORBA object bus has been introduced. Issues on the applications of the networkcentric GIS as well as its impacts on the industry have also been discussed briefly.