System and Method for Accurate Angle of Arrival Estimation of Targets using MIMO Radar

A system (300) for providing an accurate Angle of Arrival (AOA) estimation of targets using a Multiple In Multiple Out (MIMO) radar with a Frequency Modulated Continuous Wave (FMCW) modulation, the system comprising:

• a doppler disambiguation that is configured to estimate a true unambiguous doppler of detected targets;
• an updated range index module that is configured to select a correct range bin across chirps for the detected targets, based on the true unambiguous doppler and a starting range bin,
• a MIMO coefficient estimates module that is configured to calculate an amplitude and a phase of a target signal across transmit and receive antenna combinations based on the updated range index;
• a range bin migration phase correction that is configured to correct a phase error introduced by a range bin migration in the MIMO coefficient estimates;
• and
• an accurate angle of arrival estimation module that is configured to calculate the accurate AOA estimates using the corrected MIMO coefficients.