Relative Position Dynamic Map for Driver Assistance Systems in Vehicular Networks

Many traffic accidents happen because the driver misjudges the relative distance between vehicles. Active safety technologies and passive warning functions have been proposed for driver assistance systems in vehicular networks. Radar and cameras are sensors commonly used in active safety technologies. The global positioning system and dedicated short-range communication are suggested for the passive warning functions. However, the accuracy of position information is a challenge which can decrease the effectiveness of safety applications in driver assistance systems. This paper proposes a relative position dynamic map with a radar sensor for driver assistance systems in vehicular networks. The proposed method relies on the relative distance measured by the radar sensor to determine the position information of neighbouring vehicles by means of dedicated short-range communication and constructs a relative position dynamic map for the driver. The experimental results show that the proposed method should provide better performance than traditional global positioning system information.