What signal processing techniques are used in automotive radar?

Automotive radar signal processing: FMCW (Frequency Modulated Continuous Wave) is predominant - transmitted frequency ramps (chirps) reflect off objects, beat frequency between transmitted and received signals encodes range. FFT (Fast Fourier Transform) extracts range from beat frequency. Doppler processing uses multiple chirps to measure velocity. Digital beamforming enables angle estimation using multiple receive antennas. CFAR (Constant False Alarm Rate) detection adapts thresholds to noise levels. Processing outputs include range, velocity, azimuth angle, and elevation angle per detection. Challenges include multi-path reflections, extended targets, and interference from other radars.