This article proposes a new technique to reduce the effect of low-power jammers that operate in radio frequency to meddle with control station-to-train communications and also evaluates the existing techniques serving the same purpose. The railway transportation systems form a part of the critical infrastructures in industrial countries and the railway signaling, which involves the communication between the trains and the control stations is very critical. However, the intentional electromagnetic interferences (IEMIs) caused by low power electromagnetic jammers functioning in railway environments pose a vicious threat. Jammers can be utilized to disrupt the radio communications of railway operators. In this paper, we suggest the use of phased antenna arrays to safeguard the railway communication signals from intentional EMIs from low power jammers. The performance of the currently used mitigation methodologies is also evaluated in this work. A comparative analysis against the existing works shows that the forward gain of the antenna is almost doubled using the proposed method and the front-to-back ratio of the radiated beam is improved by 3.4drawbacks caused by the existing mitigation methodologies that can be concluded from the detailed evaluation of the current mitigation schemes.

本文提出了一种新技术，以减少在射频下工作的低功率干扰器的影响，以干扰控制站到火车的通信，并且还评估了用于该目的的现有技术。铁路运输系统是工业化国家中关键基础设施的一部分，而铁路信号涉及火车与控制站之间的通信非常关键。但是，由在铁路环境中运行的低功率电磁干扰器造成的故意电磁干扰（IEMI）构成了恶性威胁。干扰器可用于破坏铁路运营商的无线电通信。在本文中，我们建议使用相控天线阵列来保护铁路通信信号，使其免受低功率干扰器产生的故意EMI的影响。在这项工作中，还评估了当前使用的缓解方法的性能。对现有作品的比较分析表明，使用所提出的方法，天线的前向增益几乎增加了一倍，并且辐射束的前后比率通过现有的缓解方法所引起的3.4缺点得以改善，可以从对现有缓解方案的详细评估中得出结论。