Research on the Two-Dimensional Array Layout of Vehicle-Mounted Millimeter-Wave Radar

In order to obtain the high resolution of two-dimensional azimuth and pitch direction, two-dimensional MIMO array is used for vehicle-mounted 4D millimeter wave radar. At present, two-dimensional MIMO millimeter wave radar arrays still have problems such as high sidelobe and grating lobe exceeding main lobe, which can not accurately identify target angle in detection process. Based on the current requirement of angle measurement, a design method of two-dimensional MIMO array is proposed. The array arrangement of low sidelobe and low grating lobe imaging effect is obtained by filtering the element spacing and restricting the distribution position of array elements. Finally, several different array configurations are discussed by simulation to prove the feasibility of the proposed method.