地理要素数据变化信息关联传递技术研究

Research on geospatial element data change information transfer to associated database

针对多源地理信息数据库间更新周期不一致导致的数据更新不同步的问题,提出了基于关联关系图谱实现数据变化信息的传递方法。通过数据要素匹配、数据变化信息检测、关联关系图谱构建、变化信息传递等关键技术,实现多源数据库间更新变化信息的发现并传递至关联的数据库,可在一定程度上解决地理信息数据资源的不同步和不一致问题,提高数据资源的利用效率,达到“一库更新、关联库联动”的效果。以陕西省某区域最新版本的1∶50 000和1∶10 000基础地理信息数据为例开展了变化信息检测及变化传递实验,验证了基于数据要素匹配等关键技术可实现数据变化信息发现并基于关联关系图谱将变化信息传递到关联数据库的技术路线是可行的。

Aiming at the problem of data update asynchronously caused by inconsistent update cycles among multi-source geospatial databases, this paper proposes to realize the transmission of data change information based on association graph. Through data change information detection, association graph construction, element matching, change information transfer technologies and so on, realized the discovery of update change information among multi-source databases and transfer it to the associated database, partly solved the problem of asynchronous and inconsistent spatial data, improved the utilization efficiency of data resources, achieved the effect of “one database update, association database linkage”. This paper selected the latest version of 1∶50 000 and 1∶10 000 basic surveying and mapping database of some area in Shaanxi Province, and did the experiment on the change information detection and transfer, the experimental results verify that the technical route of discovering data change information based on data association and element matching technologies is feasible, and can transfer data change information to the associated database.