Millimeter-wave FMCW (Frequency Modulated Continuous Wave) radar is expected to be widely used for ADAS (Advanced Driver Assistance System) and automated driving car in near future. As FMCW radar uses 3–4 GHz bandwidth to achieve 10cm class range measurement resolution, its dense deployment can cause serious inter-radar interference resulting in miss-detection and/or false detection of the targets. This invited paper overviews inter-radar interference in automotive FMCW radars and describes its mitigation challenges including the proposals and results of our group.
