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Deconvolved Beamforming for a Compact Conformal Array on a Three-dimensional Mobile Platform

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Abstract

A robust and high-resolution deconvolution algorithm based on coordinate correction is developed for a compact conformal array on a three-dimensional (3D) moving platform such as underwater glider. First, the coordinate-correcting conventional beamforming is derived to directly estimate the azimuth of the long-range targets in the geodesic coordinate system for a 3D moving platform array. Then, we improve the extended Richardson–Lucy deconvolution (Ex-RL-dCv) beamforming algorithm utilizing coordinate correction to simplify the bearing estimation model from two-dimensional (2D) to one-dimensional (1D). The improved algorithm corrects the deconvolution point spread function (PSF) dictionary mismatch caused by the platform’s 3D motion, and has lower sidelobes compared with the Ex-RL-dCv algorithm without coordinate correction. Finally, simulations and results from field-trial data processing are presented. The results demonstrate that the improved Ex-RL-dCv beamforming based on coordinate correction can significantly suppress the high sidelobes caused by deconvolution model mismatch, and successfully realize the robust and high-resolution detection for targets using the compact conformal array on a 3D mobile platform.

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Acknowledgements

This work has been supported by the National Natural Science Foundation of China under Grant No.61871144.

Funding

The Funding was provided by Innovative Research Group Project of the National Natural Science Foundation of China, (No.61871144)

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Authors and Affiliations

  1. National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin, 150001, China

    Dajun Sun, Ke Zhang, Jidan Mei, Wenting Cui & Yuqing Pei

  2. Key Laboratory of Marine Information Acquisition and Security, (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin, 150001, China

    Dajun Sun, Ke Zhang, Jidan Mei, Wenting Cui & Yuqing Pei

  3. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin, 150001, China

    Dajun Sun, Ke Zhang, Jidan Mei, Wenting Cui & Yuqing Pei

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  1. Dajun Sun
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  2. Ke Zhang
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  3. Jidan Mei
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Correspondence to Jidan Mei.

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Sun, D., Zhang, K., Mei, J. et al. Deconvolved Beamforming for a Compact Conformal Array on a Three-dimensional Mobile Platform. Acoust Aust 51, 373–388 (2023). https://doi.org/10.1007/s40857-023-00304-w

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  • DOI: https://doi.org/10.1007/s40857-023-00304-w

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