Automotive radar interference test

Fully automated vehicles are currently under research and development and will become reality in the near future. Key enabling sensors in this area are automotive radars, which currently support driving comfort and crash prevention. These radars operate in the 24 GHz and 76-81 GHz bands as of today and occupy the spectrum heavily. Hence automotive radar sensors require immunity to interference of some other automotive radar sensors. This paper presents methods to verify interference mitigation techniques using very wide band arbitrary RF signals in high frequency mmWave domain. It shows measurements that the noise floor increases in between 10 dB to 25 dB depending on the interference signal level and waveform. Without interference cancellation objects with low radar cross sections, like pedestrians, would most likely go undetected.