摘要
针对GIS海量空间数据更新要求,研究了无线网络环境下空间数据传输和存储的副本动态复制与管理技术。通过分析空间数据移动复制服务策略,设计了基于无线网络的动态副本管理系统(DRMS)来实现空间数据的移动动态复制,并研究副本管理模型和副本更新算法,保证了无线网络传输的稳定性。
The technology of GIS spatial data transfer and storage is experiencing the development from wired network to wireless network at present. Under the wireless network condition, the deficiency of low bandwidth, frequent disconnection and finite resource made the efficiency of GIS data replication low. For the high request of great capacity GIS data, mobile computing environment based the wireless GIS dynamic multi-tries replication model is introduced, and a replica management system is designed to analysis the replica transferring of wireless network which preserves the desired spatial update efficiency.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2007年第3期263-265,270,共4页
Geomatics and Information Science of Wuhan University
基金
湖北省自然科学基金资助项目(2004ABA013)
国家863计划资助项目(2005AA113150)
关键词
无线GIS
移动复制技术
动态副本管理
空间数据传输
wireless GIS
mobile replication
dynamic replication management
spatial data transfer
