Effect of the fluctuant acoustic channel on the gain of a linear array in the ocean waveguide

Effect of the fluctuant acoustic channel on the gain

of a linear array in the ocean waveguide

Lei Xie;Chao Sun;Guang-Yu Jiang;Xiong-Hou Liu;De-Zhi Kong

【期刊名称】《中国物理：英文版》 【年(卷),期】2024(027)011

【摘要】The inhomogenous ocean waveguide,which leads the amplitude and phase of the signal arriving at a hydrophone array to fluctuate,is one of the causes that make the array gain deviate from its ideal value.The relationship between the array gain and the fluctuant acoustic channel is studied theoretically.The analytical expression of the array gain is derived via an acoustic channel transfer function on the assumption that the ambient noise field is isotropic.The expression is expanded via the Euler formula to give an insight into the effect of the fluctuant acoustic channel on the array gain.The result demonstrates that the amplitude fluctuation of the acoustic channel transfer functions has a slight effect on the array gain;however,the uniformity of the phase difference between the weighting coefficient and the channel transfer function on all the hydrophones in the array is a major factor that leads the array gain to further deviate from its ideal value.The numerical verification is conducted in the downslope waveguide,in which the gain of a horizontal uniform linear array (HLA) with a wide-aperture operating in the continental slope area is considered.Numerical result is

consistent with the theoretical analysis. 【总页数】8页(262-269) 【关键词】

【作者】Lei Xie;Chao Sun;Guang-Yu Jiang;Xiong-Hou Liu;De-Zhi Kong 【作者单位】Key Laboratory of Ocean Acoustics and Sensing(Ministry of Industry and Information Technology),Northwestern Polytechnical University, Xi'an 710072, China;School of Marine Science and Technology, North western Polytechnical University, Xi'an 710072, China;Key Laboratory of Ocean Acoustics and Sensing(Ministry of Industry and Information Technology),Northwestern Polytechnical University, Xi'an 710072, China;School of Marine Science and Technology, North western Polytechnical University, Xi'an 710072, China;Key Laboratory of Ocean Acoustics and Sensing(Ministry of Industry and Information Technology),Northwestern Polytechnical University, Xi'an 710072, China;School of Marine Science and Technology, North western Polytechnical University, Xi'an 710072, China;Key Laboratory of Ocean Acoustics and Sensing(Ministry of Industry and Information Technology),Northwestern Polytechnical University, Xi'an 710072, China;School of Marine Science and Technology, North western Polytechnical University, Xi'an 710072, China;Key Laboratory of Ocean Acoustics and Sensing(Ministry of Industry and Information Technology),Northwestern Polytechnical

University, Xi'an 710072, China;School of Marine Science and Technology, North western Polytechnical University, Xi'an 710072, China 【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-physics-b_thesis/0201270230550.html 【相关文献】

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