Performance Assessment Study of Road User Sensing Method by RSSI Combinations at Real Intersections

Abstract

We have proposed a dedicated onboard“ sensor” system utilizing wireless communication devices for surveillance of road users in terms of collision avoidance. Our“ sensor” system estimates the positions of transmitters on road users by comparing the strengths of communications signals of ZigBee devices. According to our experimental results, our system has competitiveness to the system utilizes TDOA localization such as GNSS, at the point of robustness against multipaths in urban canyon. Moreover, our system thought to be capable of detecting road users in non line-of-sight area whom the vision sensors cannot observe. Therefore the system is promising as a composition element of a sensor fusion system for road safety, is the final target. In this work, we report about field operational experiments at real intersections. In experiments at real intersections, we tested the localization ability of our system and GNSS. The proposed system successfully detected the near pedestrians.