远近场混合源的波束解卷积定位

商志刚; 曲星昊; 乔钢; 郝程鹏

doi:10.15949/j.cnki.0371-0025.2023.03.014

远近场混合源的波束解卷积定位

doi: 10.15949/j.cnki.0371-0025.2023.03.014

商志刚^{1, 3, ,},
曲星昊^{1, 3,},
乔钢^{1, 3},
郝程鹏^{4, 5}

1.
哈尔滨工程大学水声技术全国重点实验室　哈尔滨　150001
2.
工业和信息化部海洋信息获取与安全工信部重点实验室(哈尔滨工程大学)　哈尔滨　150001
3.
哈尔滨工程大学水声工程学院　哈尔滨　150001
4.
中国科学院声学研究所　北京　100190
5.
中国科学院大学　北京　100049

基金项目: 声场声信息国家重点实验室基金项目(SKLA202202)资助

详细信息

作者简介:
曲星昊, xinghao_qu@ieee.org

通讯作者:
商志刚, shangzhigang@hrbeu.edu.cn

中图分类号: 43.30, 43.60, 43.38
计量
- 文章访问数: 79
- 被引次数: 0
出版历程
- 收稿日期: 2022-11-05
- 修回日期: 2023-03-04
- 刊出日期: 2023-05-11

Localizing mixed far- and near-field sources using beamforming deconvolution techniques

SHANG Zhigang^{1, 3
, ,},
QU Xinghao^{1, 3
,},
QIAO Gang^{1, 3},
HAO Chengpeng^{4, 5}

1.
National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University　Harbin　150001
2.
Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology　Harbin　150001
3.
College of Underwater Acoustic Engineering, Harbin Engineering University　Harbin　150001
4.
Institute of Acoustics, Chinese Academy of Sciences　Beijing　100190
5.
University of Chinese Academy of Sciences　Beijing　100049

摘要

摘要:
提出了定位远近场混合源的波束解卷积技术, 针对非相干远近场混合声信号的线列阵观测结果, 推导了其常规波束形成(CBF)空间谱中固有的广义二维卷积数学关系, 利用Richardson-Lucy算法实现波束能量聚焦以获得近场目标的精确空域参数估计, 通过混合源协方差矩阵向近场流形的正交补空间投影操作提取远场分量, 并分析得到其内在的一维卷积关系, 然后通过角度域波束解卷积进行远场信号的波达估计。仿真分析表明, 所提方法提升了CBF谱的空域分辨力, 通过投影映射隔离近场分量后实现了混合源的分离。与现有方案相比, 所提算法针对远场信源可实现10 dB的背景噪声级抑制。
- 无源定位 /
- 远场源 /
- 近场源 /
- 解卷积波束形成
Abstract:
A beam deconvolution technique for the location of the mixed far- and near-field sources is presented in this paper. The generalized two-dimensional convolution formalism inherent in the conventional beamforming (CBF) spatial spectrum yielded by the linear array observations for noncoherent mixed signals is derived. The Richardson-Lucy algorithm is exploited to focus beam power and obtain accurate spatial parameters of the near-field sources. The far-field components are extracted by mapping the mixed-source covariance matrix to the near-field manifold’s orthogonal complement space. The intrinsic one-dimensional convolution relationship is revealed. Hence, the angular domain beamforming deconvolution is used to estimate the far-field signals’ incident angles. The simulation results show that the proposed method improves the spatial resolution of the CBF spectrum and can separate the mixed sources after isolating the near-field components by projection mapping. Besides, a background noise level suppression of 10 dB for the far-field sources is achieved by comparing it with the existing schemes.
- Passive location /
- Far-field source /
- Near-field source /
- Deconvolved beamforming

图 1 阵列观测示意图

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图 2 近场区域内的CBF归一化空间谱 (a) CBF网格曲面图; (b) CBF伪彩图

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图 3 近场区域内的CBF解卷积结果 (a) 解卷积网格曲面图; (b) 解卷积伪彩图

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图 4 所提算法流程框图

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图 5 远近场混合源空域分离 (a) CBF空间谱; (b) CBF解卷积结果

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图 6 近场区空间谱对比 (a) CBF粗解卷积(信源1); (b) CBF粗解卷积(信源2); (c) CBF谱(信源1); (d) CBF谱(信源2); (e) CBF精解卷积(信源1); (f) CBF精解卷积(信源2)

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图 7 远场信源估计结果对比 (a) 未隔离近场信源; (b) 已隔离近场信源

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图 8 阵列理想配置下远近场定位结果

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图 9 阵元位置扰动示意图

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图 10 扰动发生时的远近场定位结果

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图 11 近场强目标估计结果 (a) CBF空间谱; (b) CBF解卷积结果

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图 12 远场弱目标估计结果 (a) 未隔离近场信源; (b) 已隔离近场信源

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远近场混合源的波束解卷积定位

doi: 10.15949/j.cnki.0371-0025.2023.03.014

作者简介:
曲星昊, xinghao_qu@ieee.org

通讯作者:
商志刚, shangzhigang@hrbeu.edu.cn

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Localizing mixed far- and near-field sources using beamforming deconvolution techniques

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留言板

远近场混合源的波束解卷积定位

doi: 10.15949/j.cnki.0371-0025.2023.03.014

作者简介: 曲星昊, xinghao_qu@ieee.org

通讯作者: 商志刚, shangzhigang@hrbeu.edu.cn

计量

出版历程

Localizing mixed far- and near-field sources using beamforming deconvolution techniques

计量

出版历程

目录

作者简介:
曲星昊, xinghao_qu@ieee.org

通讯作者:
商志刚, shangzhigang@hrbeu.edu.cn