Sectorized FMCW MIMO Radar by Modular Design With Non-Uniform Sparse Arrays

Automotive radars are designed to enhance road user safety and reduce the number of accidents on public roads there is a constant demand improve performance for these radars. In this paper, novel proof-of-concept multiple-input multiple-output (MIMO) radar architecture presented by frequency modulated continuous waveform (FMCW) transmission. For enhanced angular resolution, uses two-tier antenna setup leading sparse array arrangement, mainly in an effort mitigate grating lobes offer different illuminations same scenario. Also, experimentally verified target detection at receiver, achieves modest sidelobe levels well below 12 dB from main beam maximum, whilst still maintaining competitive half-power beamwidths when compared more conventionally spaced arrays. Moreover, high impedance bandwidth receiver supporting electronics (more than 6%) allows targets only 10 cm spatial separation. The complete system also capable seeing wide field-of-view (FOV) since it utilizes network modules cover forward −90 $^\circ$ +90 range sectorization. best case, measured can resolve that distance just notation="LaTeX">$\pm 2^\circ$ apart