基于XML和CORBA的网络虚拟GIS设计

虚拟GIS是随着计算机图形技术和人机接口技术的发展，在传统多维GIS系统基础上发展起来的新型GIS系统。虚拟GIS在扩展GIS应用领域的同时，也给GIS设计带来了新的问题。根据当前计算机技术的新发展，特别是在网络信息表达技术和网络平台技术的最新发展，来设计面向Web的网络虚拟GIS。结合XML技术来解决网络虚拟GIS中多种信息在网络空间中的表达和传输，结合CORBA技术来设计网络虚拟GIS的网络结构。通过与这些新技术的结合，为开发有着丰富功能，完全开放的网络虚拟GIS建立了新的途径。

The Design of Web-oriented Virtual GIS with XML and CORBA

With the development of technologies of the computer graphics and computer-human interface, a new kind of Geographical Information System, Virtual GIS (VGIS), which is based on the traditional multi-dimensional Geographical Information System, is emerging. VGIS extends the usage of GIS, at the same time, brings new problems for the design of the GIS. In the paper, a design for the Web-oriented Virtual GIS is presented based on the lately developments on computer science, especially the lately development of the technology to represent information on Internet and the technology of the Web-oriented distributed computing platform. In the design, many kinds of information are represented and transferred on the Internet based on Extendable Markup Language (XML), and network architecture of the Web-oriented Virtual GIS is based on Common Object Request Broker Architecture (CORBA). With the integration of these new computer technologies, a new way to build a Web-oriented Virtual GIS, which has plentiful functions and totally opening system architecture, is presented.