Research on Beam Sharpening Technology of a Circular Array Deconvolved Beamforming

The design concept of Circular arrays is widely used in underwater environments to detect small targets. Sharpening circular arrays' beam-width and reducing sidelobe levels play a vital role in improving circular arrays' performance of detecting and distinguishing weak targets. In This paper, we introduce an advanced idea of a deconvolution algorithm used in signal identification to the conventional beam power of a circular array to reconstruct the spatial distribution. The proposed method can yield narrower beams and lower sidelobe levels than conventional methods successfully. The improvement of sharpening the beam-width and increasing the signal-to-interference ratio of the target is supported by the abundant simulations and experiments.