基于Agent技术的分布式虚拟地理信息系统研究

Study on agent-based technique for distributed virtual GIS

在传统多维G IS技术的基础上,结合虚拟现实技术与分布式计算技术的发展形成了新型分布式虚拟地理信息系统。分布式虚拟地理信息系统在推动虚拟现实技术和G IS应用的同时也提出了诸如网络资源搜索效率低下等新问题,本文从智能计算和分布式处理的角度将Agent技术应用分布式虚拟地理信息系统中,提出了区别于传统网络虚拟地理信息系统的系统架构,并在此基础上详细阐述了Agent技术在分布式虚拟地理信息系统的分布式协同计算和网络搜索方面的应用优势,最后采用IBM公司开发的Aglets系统对Agent技术在分布式虚拟地理信息系统中的应用作了初步的效率检验,证实了其广阔的应用前景。

On the basis of traditional multi-dimensional GIS techniques,new distributed Virtual GIS has been developed by combining virtual reality and distributed computation techniques.When distributed Virtual GIS propels the application of virtual reality and GIS,it also brings forward new problems.In this paper,agent technology is applied into the distributed Virtual GIS,especially discussing the principles,design and architecture of agent-based distributed virtual geographic information system from the aspect of intelligent computation and distributed processing.Then Aglets Software Development Kit from IBM is used to confirm the high working efficiency of agent-based distributed Virtual GIS by comparing with the traditional distributed systems.At last,this paper summarizes the promising application of agent in the distributed Virtual GIS,and makes a prospect for it.