Research on constant beamwidth beamforming for towed linear array

Yang Jing; Liting Wang; Ranwei Li

doi:10.1117/12.2624866

13 December 2021 Research on constant beamwidth beamforming for towed linear array

Yang Jing, Liting Wang, Ranwei Li

Proceedings Volume 12087, International Conference on Electronic Information Engineering and Computer Technology (EIECT 2021); 120870K (2021) https://doi.org/10.1117/12.2624866
Event: International Conference on Electronic Information Engineering and Computer Technology (EIECT 2021), 2021, Kunming, China

Abstract

Aiming at the problems of the conventional beamforming in the actual scene of the towed linear array, such as broadband signal distortion and high sidelobe. The expected beam response design method of low sidelobe based on second-order cone constraint optimization is proposed. The expected beam response of the reference frequency point is designed, and the beam response of other frequency points in the processing bandwidth is transformed into the beam response of the reference frequency point. And the constant beamwidth beamforming weighted vector is obtained, which makes the broadband beamforming have frequency invariant beam response. At the same time, the norm constraint of the weighted vector is added to improve the robustness. Besides the constant beamwidth groove beamforming method is proposed to suppress fixed azimuth interference. The effectiveness of the proposed method is verified by computer simulation with a uniform linear array.

Citation Download Citation

Yang Jing, Liting Wang, and Ranwei Li "Research on constant beamwidth beamforming for towed linear array", Proc. SPIE 12087, International Conference on Electronic Information Engineering and Computer Technology (EIECT 2021), 120870K (13 December 2021); https://doi.org/10.1117/12.2624866

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