深海海面目标单水听器被动测距方法与验证

翁晋宝; 杨燕明

doi:10.3969/j.issn.0253-4193.2017.01.004

深海海面目标单水听器被动测距方法与验证

doi: 10.3969/j.issn.0253-4193.2017.01.004

国家海洋局第三海洋研究所海洋声学与遥感实验室, 福建厦门 361005

基金项目: 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）。

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出版历程
- 收稿日期: 2016-01-07
- 修回日期: 2016-07-13

A passive sea-surface source ranging method by single hydrophone in deep sea

Ocean Laboratory of Acoustics and Remote Sensing, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

摘要

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。
- 海面目标 /
- 深海声场影区 /
- 声场干涉结构 /
- 被动测距
Abstract: The sound field frequency-range interference patterns of sea-surface source in deep water are discussed based on ray theory. Approximate formulae of the sound field frequency-range interference patterns in the shadow zone are provided. In the shadow zone, the interference cycle decreases with the increase of the depth of the receiver and increases with the increase of the propagation range. As a result, the source range can be extracted from the interference cycle of the sound intensity using a single hydrophone. The sound field interference patterns caused by sea-surface broadband noise sources in the shadow zone have been observed in a deep sea experiment in the South China Sea. The availability of the shadow zone sound field interference structure in the passive source range estimation is verified by experimental data. Compared with conventional matched field passive source localization method, this method doesn't need seafloor acoustic parameters and large scale computing of replica fields.
- sea-surface source /
- shadow zone of deep water /
- sound field interference structure /
- passive ranging

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