多源地理空间矢量数据集成与融合方法探讨

The Study for Multisource Geospatial Vector Data Integration and Fusion

针对人们对地理空间数据迫切需求,介绍了多源地理空间矢量数据产生的管理与技术原因及其5种表现形式,提出了多源地理空间矢量数据集成与融合的概念及其相互关系。论述了地理数据模型的融合、地理要素语义的融合和地理数据投影和坐标系的统一是多源地理空间矢量数据集成与融合基本理论与方法。给出了实现多源数据集成的数据格式转换、数据互操作和直接数据访问方法。最后,讨论了地理要素几何位置的融合,以及通过地理要素语义融合消除地理要素数据描述和属性差异的矢量数据融合方法。

To meet the demands on geospatial data, management and technology that produce muhisource geospatial vector data are presented. In this paper, we put forward five expressional forms for geospatial data, and conception and relationship of vector data integration and fusion. Then, we discussed basic principles and measures of vector data integration and fusion： data model integration, semantic integration, unifying projection and coordinate system. Also, we described three means to realize data integration： data format exchange, data interoperability, direct data access, At last, we discussed vector data fusion measures： geography element geometry position fusion and semantic fusion. By this, difference of geography element data description and attribute were eliminated,