Robust Beamforming Technologies for Conformal Array of Small-Scale Platform Based on Covariance Matrix Fitting

GONG Shiyu; FANG Erzheng; ZHANG Jianing

doi:10.11993/j.issn.2096-3920.2024-0001

Volume 32 Issue 5

Oct 2024

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GONG Shiyu, FANG Erzheng, ZHANG Jianing. Robust Beamforming Technologies for Conformal Array of Small-Scale Platform Based on Covariance Matrix Fitting[J]. Journal of Unmanned Undersea Systems, 2024, 32(5): 874-883. doi: 10.11993/j.issn.2096-3920.2024-0001

Citation:

GONG Shiyu, FANG Erzheng, ZHANG Jianing. Robust Beamforming Technologies for Conformal Array of Small-Scale Platform Based on Covariance Matrix Fitting[J]. Journal of Unmanned Undersea Systems, 2024, 32(5): 874-883. doi: 10.11993/j.issn.2096-3920.2024-0001

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Robust Beamforming Technologies for Conformal Array of Small-Scale Platform Based on Covariance Matrix Fitting

doi: 10.11993/j.issn.2096-3920.2024-0001

GONG Shiyu^{1, 2, 3
,},
FANG Erzheng^{1, 2, 3
,},
ZHANG Jianing^{1, 2, 3
,}

1.
National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China
2.
Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
3.
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

Received Date: 2024-01-02
Accepted Date: 2024-03-12
Rev Recd Date: 2024-03-11

Available Online: 2024-05-06

Abstract

Abstract

To achieve robust detection on small-scale platforms like unmanned undersea vehicles(UUVs), which are characterized by their limited maneuverability and array apertures, various beamforming algorithms were designed by leveraging U-shaped conformal planar arrays specifically tailored for small-scale platforms. The impact of factors such as snapshot rate, input signal-to-noise ratio, and steering vector errors on the robustness of these beamforming technologies was analyzed. Although the minimum variance distortionless response(MVDR) method is noted for its superior array gain, its performance significantly deteriorates in the presence of steering vector errors and inaccuracies in the covariance matrix estimation. To mitigate these issues, the covariance matrix fitting-based beamforming method and the dual-constraint robust MVDR method were introduced. The robustness of the robust beamforming methods applied in conformal arrays of underwater small-scale platforms was validated through numerical simulations and comparison with various beamforming technologies. Finally, the actual performance of various beamforming technologies was further compared and verified by anechoic pool experiments with the array element position error considered.
- unmanned undersea vehicles,
- conformal array,
- beamforming,
- covariance matrix fitting

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References(12)

References

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