中文摘要：

在分析国内外最新的计算机技术与GIS技术研究现状基础上,结合移动GIS和网格GIS两种技术,紧紧围绕移动终端存在的内存小、带宽窄、易断接的特征,分析和探讨一种可行的面向移动用户的新型开放式空间信息网格服务机制,提出面向移动用户的空间信息网格服务模型（spatial information grid service model for mobiledevices,M-SIG）,进而对数据与功能服务的广域描述、组织和管理机制以及移动终端的服务调用方法进行讨论,并对原型系统进行了测试.

英文摘要：

Combining grid GIS with mobile GIS,a new open spatial information grid service mechanism is discussed based on the analysis of the latest computer technology and GIS research.Focused on mobile devices＇ low capacity,narrow bandwidth and frequent disconnection characteristics,the spatial information grid service model for mobile devices（also named as M-SIG） is put forward and designed.On the basis of M-SIG,the internet description,organization and management mechanism of data and function services,the grid resource management and scheduling,and the service calling method for mobile devices,are discussed in detail.The prototype test is provided at last.