Design on radar signal simulator of automotive ACC

Radar simulator of automotive adaptive control cruise system (ACC) has been designed with the principle of radar ranging. Based on synthetically considering the relationships between the actual kinematical status of the host vehicle and the virtual kinematical status of the preceding vehicle, the simulator can generate simulated radar data streams inputted into the controller of the real vehicle test platform of the ACC system. In this paper, the basic principle and the hardware and software scheme of the radar simulator of ACC are introduced in detail. Moreover, the cause of the relative distances error of the simulator has been analyzed and it is solved by the integral algorithm correction of the relative vehicle distance that the integral error has been modified and simultaneously the sampling points do not decrease. The results of trial show that the radar signals can meet the ACC controller and accordingly the safety and efficiency of the exploitation of the ACC system and the real vehicle experiment can be ensured.