Estimation of the AoA for the targets detected through OS-CFAR using mm-Wave Radar

Millimeter-wave (mm-Wave) radar systems have gained significant attention in modern sensing applications due to their high resolution and ability to operate under diverse environmental conditions. One of the key challenges in radar signal processing is the accurate AOA estimation in cluttered environments. This paper presents an efficient method for Angle of Arrival (AoA) estimation of targets detected using the Ordered Statistics Constant False Alarm Rate (OS-CFAR) algorithm. After detecting potential targets through OS-CFAR in the range domain, AoA estimation is performed using beamforming technique Estimation of Signal Parameters via Rotational Invariance Techniques(ESPRIT), applied across the antenna array of the mm-Wave radar. Simulation results and real-time experimental data collected by Infineon BGT60TR13C mmWave radar are provided to demonstrate the effectiveness of the proposed approach in terms of detection accuracy, resolution, and robustness against noise.