Security Risk Assessment of High - Speed Railway Communication System Based on Set Pair Analysis

In order to more accurately and dynamically assess the security risks of the high-speed railway LTE-R communication system, set pair analysis is introduced into its security risk assessment. The evaluation index system is established from the four aspects of machines, materials, personnel, and methods that affect the LTE-R communication system, the least square method is used to determine the index weight, and the five-element connection number is used to establish the same, different and converse risk evaluation model of the communication system. According to the set-to-potential calculated by the model, the current indicator risk status and risk development trend of the communication system are judged, and corresponding protective measures are proposed. Example analysis shows that the LTE-R communication system is in a low-risk state, the overall development trend is good, and the evaluation results are in line with reality, which provides a new theoretical basis for the evaluation of the LTE-R communication system in the future.