【摘要】 铁路假日客运管理信息系统具有数据源众多、数据发生时间不一致和数据量大等特点。阐述时态GIS的概念和技术构成。通过扩展关系型数据模型,提出一种基于视图的时空数据模型构造方法,实现空间属性和时间属性一体化。将该模型应用于假日客运管理信息系统中:解决异构、异地数据源的问题;提高客流信息的综合度和深度;实现空间上多层次统计分析、时间上不同时刻切换。通过GIS平台进行信息展示,为指挥机构调配客运资源提供辅助决策。更多还原

【Abstract】 Holiday Passenger Information System is characterized by numerous data sources, the variety of data occurrence time and the great quantity of data. The concept and technology of temporal GIS is explained in the paper. By means of extended relational database model, a view-based framework of constructing spatio-temporal data model is proposed to integrate the attribute of time and space. The spatio-temporal model is employed in Holiday Passenger Information System to solve the problems of the variety of data sources with different structures and in different places. The integration and profundity of passenger flow information is improved. The spatial multi-layer statistic analysis and temporal shift at the selected time is realized. The information is displayed by GIS platform. It assists the holiday office in decision-making for distributing passenger traffic resources.更多还原