【摘要】 地理空间数据共享机制是“数字城市”的基础,也是“数字城市”或其相关工程开展的主要瓶颈之一。文中将地理空间数据共享机制作为一个完整的系统,从组织管理机构建设、OGC(GML)相关标准、异构数据库转换、地理空间数据共享网络建设(采用MPLS VPN技术构架地理空间数据共享网络)等角度全面阐述了地理空间数据共享机制的构建。另外,以我国南方一典型城市为例,构建了其数据共享体系,并做了详细的理论探讨和可行性分析,旨在解决目前数据共享中存在的问题和弊端。更多还原

【Abstract】 As the foundation of "the digital city",the geo-spatial data sharing mechanism is one of the main bottlenecks of "digital city" or its associated works.For a system,depicts geo-spatial data sharing mechanism from the organization,the standard of OGC(GML),heterogeneous database conversion and the sharing network(constructing geo-spatial data sharing network by MPLS VPN).In addition,took a typical city in the south China an example,built a system of data sharing,and did detailed feasibility study and theoretical analysis,aimed at resolving the problems and malpractice of the present method.更多还原