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- W4285385655 abstract "Purpose Electromagnetic interference (EMI) on communication systems of unban rail transit can hardly be clarified because of complicated factors around railways. This paper aims to target this issue and extend experimental and theoretical analysis. Design/methodology/approach This paper take the Nanjing Dashengguan Bridge as an example, because it carries the most tracks in the world and bears three kinds of trains running through, providing a perfect complex environment. First, it investigates the three communication systems, terrestrial trunked radio, communications-based train control (CBTC) and passenger information system (PIS) that Nanjing Metro uses, and select appropriate devices accordingly. Second, it establishes a system level platform and conduct three tests to analyze their respective operating principles and performance difference under common electromagnetic environments. Third, it adopts theoretical formula to verify test results. Findings The experiment results and theoretical analysis mutually corroborate each other and present practical recommendations: an 8 m or more distance between two tracks will ensure no obvious EMI created by a passing train on communication systems; two certain communication systems should not share the same frequency band; interference level is more related to field strength than weathers and building materials; and CBTC DSSS waveguide mode as well as PIS LTE mode are preferred. Originality/value This research also provides a practical method of investigating EMI for other complex situations." @default.
- W4285385655 created "2022-07-14" @default.
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- W4285385655 date "2022-07-15" @default.
- W4285385655 modified "2023-10-18" @default.
- W4285385655 title "Experiment and theoretical analysis of electromagnetic interference on communication systems in multi-rails environment" @default.
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- W4285385655 doi "https://doi.org/10.1108/srt-03-2022-0002" @default.
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