基于二维二阶矢量水听器的线谱增强技术

doi:10.16182/j.issn1004731x.joss.25-1005

摘要/Abstract

摘要：

针对低信噪比水下环境线谱信号检测受限的问题，提出一种基于二维二阶矢量水听器的空时域协同线谱增强技术。建立二维二阶矢量水听器的接收信号模型，明确其输出信号的空间特性；针对空域信号处理，融合矢量水听器各通道信号抑制噪声，提出高空间指向性增益的通道组合方法，获得空域处理增益；针对时域信号处理，改进自适应线谱增强器，并与时反卷积方法相结合，进一步抑制噪声并增强周期线谱信号。仿真结果表明：空时域协同线谱增强技术可有效增强输入谱级信噪比在-23 dB以上的线谱信号。

关键词: 二维二阶矢量水听器, 线谱增强, 空时域联合处理, 组合通道, 时反卷积, 自适应增强

Abstract:

In view of the problem of limited detection of line spectrum signals in low signal-to-noise ratio underwater environments, a spatial-temporal cooperative line spectrum enhancement technology based on a two-dimensional second-order vector hydrophone was proposed. A receiving signal model of the two-dimensional second-order vector hydrophone was established to clarify the spatial characteristics of its output signals. For spatial signal processing, the signals from each channel of the vector hydrophone were fused to suppress noise, and a channel combination method with high spatial directivity gain was proposed to achieve spatial processing gain. For temporal signal processing, an adaptive line spectrum enhancer was improved and combined with the time reversal convolution method to further suppress noise and enhance periodic line spectrum signals. Simulation results indicate that the spatial-temporal cooperative line spectrum enhancement technology can effectively enhance line spectrum signals with an input spectral signal-to-noise ratio of above -23 dB.

Key words: two-dimensional second-order vector hydrophone, line spectrum enhancement, spatial-temporal joint processing, channel combination, time reversal convolution, adaptive enhancement

中图分类号:

TP391.9

王政凯,于轶蓉,胡青 . 基于二维二阶矢量水听器的线谱增强技术[J]. 系统仿真学报, 2026, 38(8): 2312-2323.

Wang Zhengkai,Yu Yirong,Hu Qing . Line Spectrum Enhancement Technology Based on Second-order Vector Hydrophone[J]. Journal of System Simulation, 2026, 38(8): 2312-2323.

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