Phase Distortion Correction of 79 GHz Frequency-Modulated Continuous Wave Radar

To successfully apply the direction of arrival estimation algorithm to the actual data of a frequency-modulated continuous wave radar, it is essential to precisely correct the phase distortion between antenna arrays. The existing method has a dependence problem of calibration performance on the collection density of reference data used for calibration. This paper presents a novel efficient calibration method using the intrinsic properties of the phase distortion according to the target angle. The performance and effectiveness of the proposed calibration method are assessed by various experimental verifications.