An anti-collision automotive FMCW Radar using time-domain interference detection and suppression

As the number of automotive radars in vehicles will rapidly increase for self-driving car applications in near future, mutual interference between radars would result in frequent false and miss detection of the target due to dense deployment of radars. This paper focuses on interference between frequency modulated continuous wave (FMCW) radars, and proposes a time domain interference detection and suppression scheme to achieve anti-collision capability. We conducted real-world experiments by using 77.5GHz FMCW radar to validate the proposed scheme. The experimental results show that the proposed scheme can achieve almost the same target detection rate as in interference-free environment, even in interference environment.