摘要
时态 GIS(TGIS)以及时空数据模型是当前地理信息科学领域的研究热点 ,土地地籍管理信息系统是TGIS的典型应用 .对土地地籍管理信息系统的时空过程进行了分析 ;提出了在基态修正时空数据模型中 ,采用区段快速索引和变粒度存储因子方法 ,通过区段快速索引和变粒度存储因子的引入 ,系统查询效率有了明显提高 ;论述了土地信息系统中的时空概念、数据结构和系统实现 ;重点讨论了数据库中的数据组织、拓扑关系建立及数据存储管理机制 ;最后介绍了基于上述模型和方法开发的新一代大型网络级动态土地地籍管理信息系统 (Re GIS)的主要功能 .两年多的应用表明 ,系统设计先进 ,性能良好 ,运行稳定 .
Temporal GIS and spatio temporal data model are currently research focus in geographical information science(GeoScience). Land cadastral information system is one of the most typical application systems in TGIS. In this paper the spatio temporal process of the land cadastral information system is analyzed. A kind of section fast indexing(SFI) in spatio temporal data model of base state with Amendments(BSA) and a method of storage factors of variable granularity(SFVG) are presented. By importing SFI and SFVG, the inquiring efficiency of system is markedly improved. Then the spatio temporal concept, data structure and the method of implementation for Land cadastral information system are discussed. How to organize data, build topological relations and storage data in database are emphatically discussed. At last, a software package of dynamic land cadastral information system based on above model and methods is introduced. The other important technology used in dynamic land cadastral information system is self developed Spatial Database Engine(SDE). The main functions of the system are simply introduced. The dynamic land cadastral information system is practically used for more than two years in many provinces, which shows that its design is advanced, efficiency high and operation stable.
出处
《中国图象图形学报（A辑）》
CSCD
北大核心
2002年第4期388-393,共6页
Journal of Image and Graphics
基金
"九五"国家地方重大攻关项目 (96-D0 42 )
浙江省自然科学基金项目 (4 0 10 0 6)
