Wijesekera, DumindaBandara, K R Damindra Savithri2018-10-222018-10-222017https://hdl.handle.net/1920/11302Positive Train Control (PTC) is a radio-based control system designed to ensure safe navigation of trains. Safety objectives of PTC are to avoid train to train collisions, train derailments and ensure railroad worker safety. According to the published specifications of Interoperable Electronic Train Management System (I-ETMS), the on-board PTC controller communicates with two networks; the Signaling Network and the Wayside Interface Unit (WIU) network to gather navigational information such as the positions of other trains, the status of critical infrastructure and any hazardous conditions along the train path. PTC systems are predicated on having a reliable radio communication network. Secure Intelligent Radio for Trains (SIRT) is an intelligent radio that is customized for train operations with the aim of improving the reliability and security of the radio communication network. SIRT system can (1) operate in areas with high spectrum congestion, different noise levels and interference conditions, (2) withstand jamming attacks, (3) improve data throughput and (4) detect threats and improve communication security.135 pagesenCopyright 2017 K R Damindra Savithri BandaraInformation technologyComputer scienceCognitive RadioInformation SecurityPositive Train ControlSoftware Defined RadioWireless Network RelibilityDissertation