Virtual radar image construction for railway traffic

The obtaining and displaying on a screen of the railway traffic information for the manual and automatic control purpose is the main goal of the paper. Due to the fact that classical radars do not work properly in an environment with many obstacles, the trains’ localization is obtained from the Global Positioning System. Other traffic data (like track structure, switch positions, traffic light states etc.) are collected from railway station (control) computers. All traffic participants exchange information using wire or wireless communication facilities. All traffic information is processed and displayed by programs implemented on station or engine embedded computers. A method (based on real-time techniques) used for the evaluation of the system accuracy and display delay is described.