Integration of Gis, Gps and Gsm for the Qinghai-tibet Railway Information Management Planning

The Qinghai-Tibet Railway is a key project during China's Tenth Five-Year Plan period. It will be the longest and most elevated railroad built on highlands in the world. The construction and transport conditions are so complicated, such as permafrost, bitter coldness, lack of oxygen and ecological fragility. Therefore advanced technical measures and methods have been used during the construction. Furthermore, we have carried out Qinghai-Tibet Railway information management planning (QTIMP) based mainly on the G3 technique integration: geographic information system (GIS), global positioning system (GPS), and global system for mobile communication (GSM) to ensure safe transportation and prompt maintenance of Qinghai-Tibet Railway. The paper is focused on the latter. In this paper, we briefly introduces Qinghai-Tibet Railway project, emphasizes the need of QTIMP in section one. Section two gives an overview of the G3 technique integration. Section three describes the architecture of QTIMP. Section four primarily deals with the applications of G3 technique integration to QTIMP. In this section the paper is mainly focused on the visualization of geographical information at a control centre, on the design of the on-board unit and on the interaction and communication between on-board units and the control centre. Finally, a brief discussion leads to conclusions and some key issues for future research.