深海海面目标单水听器被动测距方法与验证

发布时间：2018-05-16 10:14

本文选题：海面目标 + 深海声场影区　；参考：《海洋学报》2017年01期

【摘要】：基于射线理论分析了在深海情况下海面声源产生声场的频率-距离干涉结构,给出了影区内声场频率-距离干涉结构的近似理论表达式,分析得到影区内声场频域干涉周期随收发距离的增加而增大、随着接收水听器深度的增加而减小。因此由单水听器记录的声场干涉结构即可实现被动声源距离估计。在南海深海实验中观测到海面宽带噪声源在声场影区形成的声场干涉结构,对实验获得声场干涉结构的处理结果验证了深海声场影区干涉结构用于被动声源距离估计的有效性。与传统的匹配场被动定位方法相比,该方法不需要已知海底声学参数和大规模的拷贝场计算。
[Abstract]:Based on the ray theory, the frequency-distance interference structure of the acoustic field produced by the acoustic source in the deep sea is analyzed, and the approximate theoretical expression of the frequency-distance interference structure of the acoustic field in the shadow region is given. The results show that the frequency domain interference period increases with the increase of the distance between the receiver and the receiver, and decreases with the depth of the receiving hydrophone. Therefore, the passive acoustic source distance estimation can be realized by the acoustic field interference structure recorded by a single hydrophone. In the deep sea experiment of the South China Sea, the acoustic field interference structure formed by the wide-band noise source in the sound field shadow region is observed. The experimental results of the acoustic field interference structure obtained from the experiment verify the effectiveness of the deep sea acoustic field shadow region interference structure in the passive sound source distance estimation. Compared with the traditional matching field passive localization method, this method does not need to know the seabed acoustic parameters and large-scale copy field calculation.
【作者单位】：国家海洋局第三海洋研究所海洋声学与遥感实验室;
【基金】：国家海洋局第三海洋研究所基本科研业务费专项资金(海三科2016016) 国家重点研发计划(2016YFC1400103) 国家自然科学基金(61601132,41606116) 福建省自然科学基金(2016J01019)
【分类号】：P733.23;TB565

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