基于GIS的空间数据集成方法研究

Research on space-data integration based on GIS

回顾了早期的两种数据模型,介绍了面向实体的数据模型和拓扑关系数据模型的优、缺点,在此基础上总结了GIS多源数据产生的原因和集成发展的迫切性、介绍了三种多源数据集成模型和GIS数据模型的发展方向,提出了一种从CAD数据到GIS数据的转换方法和分析了在转换过程中存在的问题以及解决的思路。

The article introduces the advantages and disadvantages of the two data model: data model faceing to entity and data model faceing to topology, sums up the reasons of multi-sources data and urgency of integration, introduces the developing direction of GIS integration model on multi-sources data ,proposes a converting way from CAD to GIS and analyses the questions in the course of conversion and resolving means.