Road watch radar development for obstacle detection and warning

Multi-mode road watch radar system has been designed and implemented for the obstacle collision avoidance on the highway. This paper gives an overview of RWR system and shows the operation of the system as well as several results. The system operation modes are traffic monitoring and collision avoidance. The algorithms of traffic monitoring are MTI, CFAR, FFT, angle estimation, and tracking. IMTI, pulse integration, and change detection is applied to collision avoidance mode. The field campaign is successfully performed on test highway after validation of system performance. The performance of collision avoidance mode shows 99.9 % of detection probability and 10^-3 of false alarm rate at a distance of 500 m using the reference RCS of 30×30 cm. The tests result of traffic monitoring mode show that RWR detect vehicles at 500m and is possible to lane discrimination at about 350m.