Automotive Radar Interference Avoidance Strategies for Complex Traffic Scenarios

The issue of interference between automotive radars is an emerging topic. Although different interference suppression techniques and mitigation approaches have been previously stud-ied, none of them have been evaluated considering complex traffic scenarios where multiple vehicles are equipped with several radar sensors. This paper presents two different interference avoidance strategies: Random Frequency Hopping with Sub-Channels and the Compass Method. The effectiveness of the strategies is evaluated by simulating two complex scenarios: A highway with 105 vehicles and an intersection of two streets with 34 vehicles, each vehicle containing five radar sensors. Subsequently, the strategies are validated by taking measurements considering the intersection of two streets.