Inter-radar interference in automotive FMCW radars and its mitigation challenges

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.