Radar (acronym for Radio Detection and Ranging) uses radio waves to detect objects in the environment. It allows determining the distance (known as range), angular position (bearing), and velocity.

Part 1 discussed “surround sensing” and frequency modulated continuous wave (FMCW) radar as the basis of an Adaptive Cruise Control (ACC). A Gunn oscillator (Gunn VCO) is often used to generate the ...