时态地理信息系统(TGIS)以表达、管理和分析动态变化的地理现象为目的,其核心是时空数据库,因此对时空数据库的理论基础——时空数据模型的研究十分必要。目前的时空数据模型主要有简单模型、时空联合模型、时空属三域模型、基于对象/特征的模型和基于事件/过程的模型等。首先对这些模型进行了回顾,对其优缺点和侧重点进行了分析对比,然后在此基础上对时空数据模型的进一步研究方向进行了剖析。
Temporal geographic information systems(TGIS) aim to represent, manage and analyze the dynamically changing geographic phenomena. Spatio-temporal database is the core of TGIS, and its theoretical foundation is spatio-temporal data model, so the research of spatio-temporal data model is very essential. The presented spatio-temporal data models include simple models, space-time joint models, space-time-attribute three-domain models, object-/feature-based models and event-/ process-oriented models, et al. This paper reviewed these models, analyzed and compared their advantages and disadvantages and emphases. Furthermore, pointed out the future research directions on spatio-temporal data models.