Target detection apparatus and method using angle estimation of mpsk-mimo fmcw radar

A target detection device based on a MPSK-MIMO FMCW radar, the target detection device comprising:

• a signal processor configured to generate a range-velocity map from a radar signal transmitted from the MPSK-MIMO FMCW radar and then reflected and received;
• a signal detector configured to detect a plurality of target signals including a real target signal and a ghost target signal for a target with respect to a velocity axis from the range-velocity map;
• an angle estimator configured to estimate an angle of arrival of the target by applying a Capon beamforming algorithm to a target detection result on the range-velocity map;
• a phase sequence generator configuring a phase sequence by extracting phase values for the plurality of target signals from the range-velocity map and configured to arrange the phase values in descending order of velocity value;
• a candidate phase sequence generator configured to derive a plurality of prediction phase values by using the angle of arrival and arranging differently the plurality of prediction phase values according to a preset rule to obtain a plurality of candidate phase sequences;
• and
• a signal identifier configured to calculate a correlation coefficient between the phase sequence and the plurality of candidate phase sequences and identify a real target signal among a plurality of target signals of different velocities in the range-velocity map by using the candidate phase sequence representing a highest correlation coefficient.