基于交替方向乘子法的雷达目标多频段多视角融合高分辨成像算法

doi:10.12305/j.issn.1001-506X.2026.01.09

Abstract

Abstract:

To address the challenge of effectively integrating radar echo data from different frequency bands and viewing angles to achieve higher-resolution and clearer images, a high-resolution radar imaging algorithm based on the alternating direction method of multipliers （ADMM） for multi-band and multi-angle data fusion is proposed. First, a sparse representation model is constructed for the multi-band and multi-angle radar signals. Then, the sparse reconstruction problem is solved by using ADMM. Finally, radar echo signals with ultra-wide bandwidth and large coherent accumulation angles are obtained, enabling the generation of radar images with significantly higher resolution compared to those produced by a single radar system. In addition, the sparse regularization mechanism of ADMM encourages sparsity in the solution, which allows it to automatically suppress low-intensity, random, or dispersed clutter signals in the background. This effectively enhances imaging quality by reducing background clutter. Taking simple multi-sphere models and complex ship models as examples, the impact of the proposed method and commonly used reconstruction algorithms on achieving high-resolution imaging through multi-band and multi-view fusion is analysed from two aspects: reconstruction accuracy and noise resistance. The results show that the proposed method can accurately reconstruct target scattering points in low signal-to-noise ratio environments and maintain high imaging resolution, verifying the effectiveness and noise resistance of the method.

Key words: alternating direction method of multipliers (ADMM), multi-band and multi-view fusion, signal sparse representation, high-resolution imaging

CLC Number:

TN957.52

Xuan LI, Jianhao ZHONG, Zi HE, Zhenhong FAN, Dazhi DING. High-resolution imaging algorithm using multi-band and multi-view fusion technique based on alternating directions method of multipliers[J]. Systems Engineering and Electronics, 2026, 48(1): 87-93.

Figures/Tables 9

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References 31

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参数	雷达1	雷达2	全频带雷达
带宽/GHz	10~10.8	13.2~14	10~14
方位角度/（°）	−5~ −1.5	1.5~5	−5~5
俯仰角度/（°）	60	60	60

参数	雷达1	雷达2	全频带雷达
带宽/GHz	6~6.825	9.175~10	6~10
方位角度/（°）	85~88.6	91.3~95	85~95
俯仰角度/（°）	80	80	80

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High-resolution imaging algorithm using multi-band and multi-view fusion technique based on alternating directions method of multipliers

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