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On Robust Beamforming for Distorted Towed Linear Array Using Product Theorem

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Abstract

To solve the beamforming performance degradation problem of the towed linear array caused by the shape distortion, we propose a robust beamforming way for distorted towed linear array. The proposed method basically uses the segmented processing, which can be divided into 3 steps. Firstly, towed linear array is divided into sub-arrays. Then, the weights of sub-arrays are obtained and outputs of beamforming of sub-arrays are obtained. In the end, according to the principle of the product theorem, the correlation calculations are performed on the output of the sub-array. Due to the adoption of sub-array correlation calculations, the proposed method can upgrade beamforming performance. Compared with the traditional distortion array processing method, the proposed method can improve the local signal-to-interference plus noise ratio (SINR) by about 2–3 dB. Simulation and sea trial data verify the effectiveness of the proposed method.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Grant No. 51679247).

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Authors and Affiliations

  1. College of Electronics Engineering, Naval University of Engineering, Wuhan, 430033, China

    Daiqiang Lu, Gaoxiang Xing & Tao Luo

  2. Naval Submarine Academy, Qingdao, 266000, China

    Qi Zhang

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  1. Daiqiang Lu
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  2. Gaoxiang Xing
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Correspondence to Gaoxiang Xing.

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Lu, D., Xing, G., Luo, T. et al. On Robust Beamforming for Distorted Towed Linear Array Using Product Theorem. Acoust Aust 48, 211–219 (2020). https://doi.org/10.1007/s40857-020-00189-z

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  • DOI: https://doi.org/10.1007/s40857-020-00189-z

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