Research on Real Time Traffic Information Data Model and Its Data Transmit
Real-time of geographic information system for transportation (GIS-T) is one of the essential conditions to alleviate the traffic jam and guide the traffic flow rationally. In order to make it convenient for sharing and maintaining data, this paper structures the independent real-time traffic information database, seamless merging real-time traffic information and GIS data through data fusion method. In order to realize this purpose, the paper research on baseline network data model, baseline network is composed of base points and baselines. Base points are exclusive locating on the road network, which can be determined in field, and also can be resumed. Baseline is line element, which replaces traffic event, the baseline locate road network by the point, and therefore, it is easy to realize data share for various linear reference system. According to the data model, designing structure and introducing data transmit flow of the Geographic Information System for Transportation. Key words: Data Model; Data Fusion; GIS; Traffic Information This paper is supported by the Department of Instrument Science and Engineering, Southeast University, and professor DE-JUN WAN and professor QING WANG
Data Model; Data Fusion; GIS; Traffic Information
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