Aiming at the problem that there are multiple radar target points in one target echo based on the sensing principle of millimeter wave radar

human activity characteristics and clustering data processing techniquethe radar configuration is analyzed

a hierarchical aggregation optimization technique is proposed to improve the accuracy rate of detection. A 77 GHz chirp human detection radar system is constructed with multiinput-multiple-output（MIMO） antenna mechanism using AWR1443. The hierarchical aggregation optimization algorithm is coded and the verification experiment of the actual scene human detection is carried out. The experimental result demonstrates that the system has high accuracy compared with the results of similar studies.