地理信息系统中时空拓扑关系计算表达  

Calculation and Search for the Spatio-temporal Topological Relation of Spatio-temporal Object

作　　者：曾联斌[1] 宋迎春[1] 

机构地区：[1]中南大学信息物理工程学院,湖南长沙410083

出　　处：《湖南大学学报（自然科学版）》2010年第4期85-89,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(40874005);教育部博士学科点基金资助项目(200805331086)

摘　　要：针对TGIS时空对象,建立了基于时段时空数据模型,根据9交模型以及基于时段的时间表示方法,定义了TGIS时空对象时空拓扑关系模型,利用代数方法给出了时空拓扑关系计算的规则.能有效地重建时空数据的历史状态,跟踪时空数据的变化,处理一切基于时间的查询,实现对TGIS时空对象时空拓扑关系的计算.This paper focuses on how to build a suitable data model of time combined with space,namely, a spatio-temporal data model. Using 9-Intersection model and time expression based on time-slice, a qualitative model for the spatio-temporal topological relations between temporal GIS objects was defined. Using a algebraic method, the computation rules for spatio-temporal topological relations were obtained. Therefore, we could rebuild historical state of spatio-temporal data, trace the changes of spatio-temporal data, deal with all time-based querying and realize the calculation of the temporal and spatial topological relation of spatio-temporal objects.

关 键 词：GIS 时空系统 事件数据库 时空分析 

分 类 号：P208[天文地球—地图制图学与地理信息工程]