1.哈尔滨工程大学 水声技术全国重点实验室,黑龙江 哈尔滨 150001
2.海洋信息获取与安全工信部重点实验室(哈尔滨工程大学) 工业和信息化部,黑龙江 哈尔滨 150001
3.哈尔滨工程大学 水声工程学院,黑龙江 哈尔滨 150001
4.哈尔滨工程大学 三亚南海创新发展基地,海南 三亚 572024
[ "郑义,男,博士研究生" ]
[ "聂东虎,男,教授,博士生导师" ]
收稿:2025-06-05,
网络首发:2025-06-24,
纸质出版:2025-08-05
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郑义, 聂东虎, 孙宗鑫, 等. 稀疏系数腐蚀平滑后重构的拖线阵强噪声干扰抑制[J]. 哈尔滨工程大学学报, 2025,46(8):1618-1624.
Yi ZHENG, Donghu NIE, Zongxin SUN, et al. Strong noise interference suppression of a passive towed linear array based on sparse coefficient reconstruction after eroding and smoothing[J]. Journal of Harbin Engineering University, 2025, 46(8): 1618-1624.
郑义, 聂东虎, 孙宗鑫, 等. 稀疏系数腐蚀平滑后重构的拖线阵强噪声干扰抑制[J]. 哈尔滨工程大学学报, 2025,46(8):1618-1624. DOI: 10.11990/jheu.202506008.
Yi ZHENG, Donghu NIE, Zongxin SUN, et al. Strong noise interference suppression of a passive towed linear array based on sparse coefficient reconstruction after eroding and smoothing[J]. Journal of Harbin Engineering University, 2025, 46(8): 1618-1624. DOI: 10.11990/jheu.202506008.
针对水声强噪声干扰会导致被动拖线阵目标方位估计性能严重下降的问题,本文提出了一种稀疏系数腐蚀平滑后重构的强噪声干扰抑制方法。利用宽带阵列信号频域压缩感知方法,对拖线阵数据进行空间稀疏表示,引入数字图像处理中的腐蚀和平滑方法,对稀疏系数表示的方位历程图进行处理,估计降噪加权因子并对稀疏系数进行修正,修正后的稀疏系数进行重构得到降噪后的数据。仿真和海试数据处理结果表明:在本文参数条件下,所提方法能够有效抑制接收数据中的强噪声干扰,处理后的仿真和海试数据中的噪声干扰功率有明显的降低,为提高后续目标检测性能打下基础。
To address the issue of significant performance degradation in bearing estimation of passive towed linear arrays caused by strong acoustic noise interference underwater
a novel method for noise suppression is proposed to reconstruct sparse coefficients after eroding and smoothing. This method leverages spatial sparse representation of towed linear array data through the application of a compressed sensing technique at signal frequency domains of a wideband array. By incorporating erosion and smoothing algorithms that are commonly utilized in digital image processing
the bearing-time recording represented by sparse coefficients was processed to estimate a noise reduction weighting factor. Subsequently
the sparse coefficients were adjusted accordingly
resulting in the reconstruction of denoised data. The simulation and sea trial data analysis demonstrated the efficacy of the proposed method in mitigating significant noise interference in the received data within the specified parameters. The noise interference power in the processed simulation data and sea trial data was observed to be considerably reduced. These findings provide a basis for enhancing the performance of target detection in the future.
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