基于矢量声压组合基阵的柱面分布噪声源近场高分辨定位方法

发布时间：2018-07-29 16:32

【摘要】：[目的]现有的水下噪声源近场定位方法通常假设测量面为平面,较难应用于柱面分布的水下噪声源目标测试中,同时常规近场聚焦波束形成应用于柱面分布水下噪声源定位时空间分辨率较低,基于声压基阵的水下噪声源近场定位方法则存在左右舷模糊的问题。为解决这一问题,[方法]通过建立测量面为柱面分布的噪声源近场测量模型,结合矢量水听器的单边指向性和MUSIC算法的高分辨率特性,提出基于矢量声压组合基阵的柱面分布噪声源近场高分辨定位方法,并进行计算机仿真验证。[结果]研究结果表明,该方法采用较小的基阵孔径即可实现柱面分布的水下噪声源近场精确定位,[结论]可应用于大型圆柱类复杂系统的噪声源定位识别。
[Abstract]:[objective] the existing near-field localization methods for underwater noise sources usually assume that the measurement plane is plane, so it is difficult to be applied to the target measurement of underwater noise sources with cylindrical distribution. At the same time, the spatial resolution of conventional near-field focusing beamforming in cylindrical distributed underwater noise source localization is low, while the near-field localization method based on acoustic pressure array has the problem of starboard ambiguity. In order to solve this problem, the near-field measurement model of noise source with cylindrical surface distribution is established, and the one-sided directivity of vector hydrophone and the high resolution characteristic of MUSIC algorithm are combined. A high resolution near field location method for cylindrical distributed noise sources based on vector sound pressure array is proposed and verified by computer simulation. [results] the results show that the proposed method can be used to locate the near field of cylindrical distributed underwater noise sources by using small array aperture. [conclusion] this method can be applied to the identification of noise sources in large cylindrical complex systems.
【作者单位】：海军驻上海江南造船(集团)有限责任公司军事代表室;中国舰船研究设计中心;
【分类号】：TB56

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