Direction of Arrival (DOA) Estimation

Abstract

The importance of DOA estimation in radar processing for automotive applications cannot be overstated. It forms the third component of the radar cube: range, velocity, and angle. In practice, DOA estimation is often complicated by the fact that there will be multiple and unknown number of source signals impinging on the receiver array at the same time, with unknown amplitudes. Additionally, the received source signals are almost always corrupted by additive noise and clutter is present. Besides these challenges, we also have to deal with the multipath problem.