关键词: 基础地理信息, 地理实体, 底座, 一张图, 数据模型

Abstract: In view of the current practical problems such as poor consistency,uneven quality,and weak customization and derivation ability of multi-source fundamental geographic information data,on the basis of analyzing the current situation of “one map” related to geographic information,the concept of “one map” data model of fundamental geographic entity base is proposed,and the mathematical definition of the model and the data structure with geographic entities as the core are given,and the model application architecture covering key links such as analysis and collation of data,merit-based fusion of data and flexible customization of products is designed. The experimental verification shows that the model is feasible and effective. The research results of the model can realize the efficient integration and utilization of multi-source geographic information data,and at the same time provide an efficient and intensive technical path for the construction of new fundamental surveying and mapping,which is expected to promote the innovation of geographic information data production,updating,management and application mode,and provide accurate,reliable,unified and efficient geographic information services for the development of national economy and national defense construction.

Key words: fundamental geographical information, geographical entity, base, one map, data model