分布式地学虚拟环境研究

讨论了分布式地学虚拟环境的概念，特征以及与GIS的相互关系，从系统结构，数据模型，交互界面和开发工具方面，对分布式地学虚拟环境的系统框架进行了研讨。最后，从理论，技术和应用层面介绍了关于分布式地学虚拟环境的研究热点和难点，并讨论了进一步的研究方向。

Study on Distributed Virtual Geo-Environments

Distributed virtual environments are the integration of virtual environments and network. Distributed virtual geo-environments(Geo-DVE) are virtual environments for studying geo-phenomena and geo-process. This paper discusses the concept and characteristics of Geo-DVE, and the relationship between GIS and Geo-DVE. The system design of Geo-DVE is addressed in terms of system architecture, data model, system interface, and programming tools. The paper eventually presents the hot research topics and frontiers regarding Geo-DVE from three aspects of theory, techniques, and applications. In terms of system architecture, data model, system interface, and programming tools. The paper eventually presents the hot research topics and frontiers regarding Geo-DVE from three aspects of theory, techniques, and applications. In terms of aspect of theory, the research challenge and frontiers include the relationship between virtual environments and physical geographic environments, geo-spatial and temporal cognition in virtual environments, 3-D data model of virtual environments. In terms of aspect of techniques, rapid dynamic 3-D modeling, real-time communication and interaction, shared space and operation for multi-users, geo-process models based virtual environments, distributed collaborative work and group decision making support, and wearable mixed reality are included. In terms of aspect of applications, the building and development of further practical functions of 3-D digital cities and 3-D digital communities, visual data mining and knowledge discovery, virtual tourism, virtual battlefield, and virtual decision support environments for regional sustainable development should be highlighted.