Field Verification of Recursive Structure Beamforming

A study of recursive structured beamforming in millimetre wave radar for extremely close multi-target scenarios. The recursive structure beamforming technique is verified in practice, using very few array elements to achieve very narrow beamwidth beamforming, feeding the echo signal into a one-dimensional recursive structure and matching filtering to achieve the desired airspace filtering effect. The results show that the one-dimensional recursive structure of the beamforming algorithm achieves a high degree of angular resolution and improves the air domain filtering performance of the radar.