摘要
如何利用带宽窄及不稳定性的无线网络进行大量空间数据服务成为制约移动GIS发展的瓶颈.在分析信息自适应服务方法的基础上,借鉴连续网格模型和多尺度矢量存储模型技术,提出一种在移动GIS中的点要素信息自适应服务方法;给出了自适应服务技术框架,从数据自适应策略和控制自适应策略两方面进行了仔细深入的研究,并给出了实现方法;最后进行了相关的实验.
Limitation from the narrow bandwidth and insufficient reliability of wireless communication are the main bottlenecks in developing mobile GIS for providing spatial information-based services to mobile clients. Service adaptation is a promising solution. An efficient algorithm for adaptive service of point features over wireless net based on grid mode and multilevels of detail of vector data is introduced. An architecture with adaptive policies is proposed, under which ways to realize data adaptations and control adaptations of point features are investigated. Finally, some test experiments are carried out.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2005年第6期1167-1172,共6页
Journal of Computer-Aided Design & Computer Graphics
基金
国家"八六三"高技术研究发展计划(2002AA783060)
关键词
移动GIS
点要素
空间信息
自适应服务
mobile GIS
point feature
geospatial information
adaptive service
