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《Journal of Transportation Systems Engineering and Information Technology》 2016-01
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Detection Modes of Field Strength Measurement in Railway Dedicated Mobile Communication Network

DING Jian-wen;LIU Yang;FEI Dan;ZHONG Zhang-dui;National Research Center of Railway Safety Assessment,Beijing Jiaotong University;School of Electronic and Information Engineering,Beijing Jiaotong University;State Key Laboratory of Rail Traffic Control and Safety,Beijing Jiaotong University;  
In the field strength measurement of railway dedicate mobile communication network, the selection of detection mode determines accuracy of measurement results. The detectors available are the max peak, the average and the RMS detector. The max peak detection is applied in the standards of railway digital mobile communication system(GSM- R) field strength measurement. This paper investigates the difference between the field measurement results and practical application effect of communication system in railway operation which affects the actual performance of the communication system. We mainly study the working mechanism of field strength measurement receiver and different detector, and propose the detection model according to the mathematical description. Then the field strength measurement methodology for the verification of different detection is designed in the laboratory static scenario and railway field dynamic scenario. At last the measurements are carried out and the data of different detection modes are compared and analyzed. The analysis result shows that the RMS detection is more suitable for GSM- R field strength measurement.
【Fund】: 国家自然科学基金(U1334202);; 教育部科学技术研究重大项目(313006);; 铁道部科技研究开发计划项目(J2013C019 2014X006)~~
【CateGory Index】: U285;TN929.5
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