| 基于GML/SVG的WebGIS体系结构设计与实现 |
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| 引用本文： | 常小慧,李宏伟,黄海文,陈旭.基于GML/SVG的WebGIS体系结构设计与实现[J].地球信息科学,2006,8(4):35-41. |
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| 作者姓名： | 常小慧 李宏伟 黄海文 陈旭 |
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| 作者单位： | 信息工程大学测绘学院, 郑州 450052 |
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| 摘 要： | 随着Internet的飞速发展,WebGIS也进入了蓬勃发展的阶段,而制约WebGIS发展的问题也日益突出。本文针对WebGIS中存在的地理空间数据语义共享和网络带宽日益紧张的问题,引入了GML和SVG,在此基础上提出并论证的基于GML和SVG的WebGIS系统的方案和应用模式,并详析了实现该系统的体系结构和相关技术,最后给出了该系统的应用实例。
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| 关 键 词： | GML SVG WebGIS |
| 收稿时间： | 10 30 2005 12:00AM |
| 修稿时间： | 08 14 2006 12:00AM |
The Design and Implementation of WebGIS Architecture Based on GML and SVG |
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| CHANG Xiaohui,LI Hongwei,HUANG Haiwen,CHEN Xu.The Design and Implementation of WebGIS Architecture Based on GML and SVG[J].Geo-information Science,2006,8(4):35-41. |
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| Authors: | CHANG Xiaohui LI Hongwei HUANG Haiwen CHEN Xu |
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| Institution: | Institute of Surveying and Mapping,Information Engineering University, Zhengzhou 450052, China |
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| Abstract: | With the rapid development of the Web technology, GIS has entered a brand-new stage. Web technology brings geographic information so great impetus that it can be more open and popular to the public, industries and departments. WebGIS, which combines the Internet web technology with GIS technology, has become an important research direction of GIS. WebGIS is a good approach to get GIS data and geographic information service for us. But WebGIS also confronts some problems for the further development, such as absence of interaction and limitation of accessing heterogeneous database. So WebGIS needs some new technologies to solve these problems. XML is a new technology, which promotes the development of Web. GML specification is defined by OGC. Its purpose is to transport and store geographic information in XML format, which will play an important role in the development of WebGIS. This paper analyzes the problem that the WebGIS exists in spatial data sharing and in bandwidth of network at first. It then discusses the GML and SVG as well as the application of GML and SVG in WebGIS. On the basis of general architecture of WebGIS, the author presents a new architecture based on GML and SVG. The architecture is made up of three layers: database, application and client. This paper analyzes the architecture in detail and explains the characteristic of the architecture. And then it introduces some key technologies in detail such as parsing GML document, translating GML to SVG and so on. Finally, this paper provides the application example of this architecture and gives the picture of the WebGIS prototype system interface. |
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| Keywords: | GML SVG WebGIS |
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