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柱面多参考统计最优近场声全息研究

DOI: doi:10.3969/j.issn.1006-7043.2011.01.017

Keywords: 近场声全息, 统计最优近场声全息, 噪声源定位, 声场重构??

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Abstract:

针对舰艇水下机械噪声源分布集中、相关性强、耦合作用明显等特点,利用柱面多参考统计最优近场声全息,建立舰艇水下机械噪声源的可视化定位技术.该方法集成了多参考点布置、局部声场分解和统计最优近场声全息反演算法等技术.针对该方法,进行了多点相关噪声源定位及多参考点布置等仿真研究,并进行了水下模型的近场声全息试验研究.仿真和试验结果表明:本方法能够实现水下圆柱壳体结构表面噪声源可视化定位,当选择合适的多参考点布置时,例如尽可能地选择靠近且围绕噪声源的多个参考点布置,能够获得最优的声场重构结果.

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