Abstract: Deficiency and limitations of wireless network and mobile terminals, and the particularity of GIS data blocks the development in mobile GIS. Aiming at this problem, this paper presents a progressive query method for a mobile GIS service and the corresponding data structure. Experimental results prove that this method can cut down the processing time and increase the data transfer efficiency.

Key words: mobile GIS, progressive query, XQuery

摘要： 无线网络和移动终端固有的缺陷和局限性、GIS数据本身的特殊性阻碍了移动GIS服务的应用。针对该问题提出一种应用于移动GIS服务的渐进查询方法，给出相应的数据结构。实验结果证明，该查询方法可以缩短处理时间、提高数据传输效率。

关键词: 移动GIS, 渐近查询, XQuery查询

CLC Number: 

• TP391