Journal of System Simulation
Abstract
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.
Recommended Citation
Wang, Zhengkai; Yu, Yirong; and Hu, Qing
(2026)
"Line Spectrum Enhancement Technology Based on Second-order Vector Hydrophone,"
Journal of System Simulation: Vol. 38:
Iss.
8, Article 13.
DOI: 10.16182/j.issn1004731x.joss.25-1005
Available at:
https://dc-china-simulation.researchcommons.org/journal/vol38/iss8/13
First Page
2312
Last Page
2323
CLC
TP391.9; TB566
Recommended Citation
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.
DOI
10.16182/j.issn1004731x.joss.25-1005
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