浙江省基础地理空间要素数据库增量更新技术研究与生产应用

Research and Production Application on the Incremental Update Technology of Zhejiang Provincial Fundamental Geospacial Database

随着社会经济对地理信息服务需求的不断高涨,如何提升基础地理空间要素数据库更新效率,已成为发展新型基础测绘中一个非常关键的问题。利用增量更新技术对基础地理空间要素数据库进行更新,是有效减少更新工作量、加快更新生产周期的主要解决方法之一。本文所介绍的基于要素唯一编码的增量更新技术方法,已应用于浙江省省级基础测绘的更新生产中,形成了贯穿数据更新生产和数据库更新的整套增量更新工艺流程。该方法在不增加数据更新生产工作量的同时,既保留了增量信息,也有效地提高了数据库更新的效率,减少了数据库的冗余,更好地适应了基础地理信息数据快速更新的生产需求和数据现势性的需求。

Along with the rising demand for geographic information service from society and economy, how to improve the update efficiency of basic geographical spatial element database, has become a critical problem in new basic surveying and mapping. Incrementalupdate technology is one of the main solutions to reduce the update workload and accelerate the update cycle in basic geographical spatial element database. This article introduces an incremental update technology based on coding the elements, which has been appliedin Zhejiang provincial surveying and mapping and formed a whole set technological process from data production to dataset update.Meanwhile, this method can keep the incremental information and reduce the database redundancy, moreover, it can improve the dataset update efficiency to meet the basic geographic information update demands： quick update and latest data.