Research on balise layout scheme evaluation with DEA and AHP integrated method based on computer simulation

As the key equipment in information transmission between cab and ground, the balise can be used in train position calibration and information transmission for high-speed railways. The number of balises laid along a railway line, the space between two balise sets and the redundancy of transmitted data affect the train running and train control systems. Study of these influential parameters may serve to provide a basis for optimizing the balise layout and improving traffic efficiency and to guide engineering construction to achieve more benefits with less investments. In this paper, the DEA and AHP integrated evaluation method was adopted to accomplish objective evaluation and quantitative sequencing in the case of less balise layout schemes. For those indexes which can not be directly converted from balise layout schemes to data, quantitative statistical data were acquired throuth computer simulation. All data were analyzed comprehensively with the method of DEA and AHP, and the quantitative evaluation sequence of different balise layout schemes was obtained.