Study On High-Speed Railway Networks Resource Spatiotemporal GIS Based On Object-Oriented

With the application and development of information technique, the limitations on the present information systems of China railway are exposed. These limitation include that the information resource can not be integrated and reused effectively, a mass of formulary data are laid aside, the temporal and spatial information is ignored, and information systems for railways can not provide effective support for train transportation. To construct an integrated information system, utilize spatiotemporal property, advancing decisions supporting ability, can be the railway informatization trends and objectives.Based on the research about China high-speed railway, such as Zheng-Xi line, Wu-Guang line and Jing-Jin line etc, the paper makes the networks resource as the research objective, complicates its spatiotemporal property analysis and description. The paper uses Object-Oriented technique and UML method to complicate high-speed railway networks resource spatiotemporal GIS, and implements resource management model for Lanzhou Bureau based on research on GIS, the novel networks resource GIS has been implemented, and can benefit its application effectively and quickly.Firstly, the paper proposes the relative hierarchical structure model of high-speed railway information resource, and completes hierarchical requirements and distributed architecture for railway information sharing and processing, which includes information sharing inside railway, outside railway and for decisions supporting. The paper completes a whole model for railway information sharing and processing by implementing horizontal and vertical logical relation analysis and model definition. According to railway informatization trends, the paper discuses the necessity and feasibility of GIS and spatiotemporal theory, and proposes high-speed railway networks resource GIS model, which is driven by events, constructs basic concept model of high-speed railway networks resource, this concept model is abstract expression about networks resource. UML is used as the modeling methods, and events-driven and dynamic model is used to design. According to definitions about object, graphic layer relation and database, the paper constructs networks resource static structure models and dynamic behavior models. Based on analyzing networks resource business flows, the paper completes spatial objects and some virtual spatiotemporal objects definition and organization, which is implemented by kernel evens extracting and encoding. Lastly, the paper presents the engineering implementation for the Lanzhou Railway Bureau networks resource based on the research contents.