城市基础地理数据库更新机制研究  

STUDY ON UPDATING CITY'S FUNDAMENTAL GEODATABASE

作　　者：刘德儿[1,2] 闾国年[1] 兰小机[2] 王永君[1] 

机构地区：[1]南京师范大学地理信息科学江苏省重点实验室,南京210046 [2]江西理工大学建筑与测绘工程学院,赣州341000

出　　处：《大地测量与地球动力学》2010年第1期155-159,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40761017;40730527);国家863计划课题(2007AA12Z207)

摘　　要：从GIS和CAD两种数据模型出发,提出基于CheckOut/In的数据更新机制,为了充分利用CAD制图功能,在CAD中将新测数据插入到更新区域,然后写入子数据库,同时父数据库自动检测并做出响应。实际应用证明该研究成果能提高基础地理数据库的更新速度。Today, urban development is so rapid that the updated cycle of geodatabase should be shortened. After studying existing results based on GIS and CAD models, the updating system based on Check Out/In is put forward. By use of the CAD＇ s mapping functions fully, new surveyed data are inserted into the area to be updated, and saved to a sub -geodatabase. At the same time, its parent geodatabase will detect it and respond to automaticly. Experimental results certify that this method can update the city＇s fundamental geodatabase more rapidly.

关 键 词：CHECK Out/In 地理数据库 CAD 数据更新 更新周期 

分 类 号：P208[天文地球—地图制图学与地理信息工程]