三维地理信息系统中数据更新方法探讨

Study on update method of data in the three-dimensional geographic information system

DLG、DEM、DOM及三维数据是目前三维地理信息系统中的主要数据,文章通过对三维地理信息系统中数据种类的分析,总结对应于不同目标区域的DLG、DEM、DOM及三维数据的更新方法及技术流程,对不同数据的各种更新方法的优点和缺点进行了综合分析和比较,为以后相关项目的数据更新提供借鉴依据。

DLG（DEM.DOM and three -dimensional data is the major data in the three -dimensional geographic information system. Through analyzing the type of data of three - dimensional geographic information system in the article, it is found the method of data update of DLG.DEM.DOM and three - dimensional data and the technical processes in different object regions. The authors analyze and compare the advantage and shortcoming of the different method, which can provide reference of data update in similar project in the future.