Deconvolved Beamforming Using the Chebyshev Weighting Method

Abstract

This paper studies a deconvolved Chebyshev beamforming (Dcv-Che-BF) method. Compared with other deconvolution beamforming methods, Dcv-Che-BF can preset sidelobe levels according to the actual situation, which can achieve higher resolution performance. However, the performance of Dcv-Che-BF was not necessarily better with a lower preset sidelobe level in the presence of noise. Instead, it was much better when the preset side lobe level matched the signal to noise ratio of the signal. The performance of the Dcv-Che-BF method with different preset sidelobe levels was analyzed using simulation. The Dcv-Che-BF method achieved a lower sidelobe level and better resolution capability when the preset sidelobe level was slightly greater than the noise background level. To validate the feasibility and performance of the proposed method, computer simulations and sea trials were analyzed. The results show that the Dcv-Che-BF method is a robust high-resolution beamforming method that can achieve a narrow mainlobe and low sidelobe.

Keywords

Chebyshev weighting / Deconvolution / Beamforming / High resolution / Robust

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