| 李健,李赫,郭新毅,马力.利用水下滑翔机的深海声源影区深度估计*[J].,2025,43(3):704-712 |
| 利用水下滑翔机的深海声源影区深度估计* |
| Estimation of sound source depth in deep sea shadow zone by underwater glider |
| 投稿时间：2024-01-15 修订日期：2025-04-25 |
| 中文摘要: |
| 传统深海探测方法往往需要布放大孔径阵列，不仅成本高昂且观测范围有限，而新型无人水下航行器的出现为传统水声探测提供了新的手段，尤其是水下滑翔机依靠其低成本、长航时、大范围覆盖的特点，成为水下观测的有力工具。但在水声应用方面，水下滑翔机存在孔径较小的问题，获取的声学信息较为有限，基于水下滑翔机进行被动探测的研究也相对较少。针对这一问题，本文根据深海声影区的多途到达结构，分析了一次海底反射声线形成的时延差曲线随接收深度和接收距离的变化关系，通过等掠射角近似和近海面等声速近似，提出了一种适用于水下滑翔机等机动平台的利用多途时延差的深海声影区近海面声源深度被动估计方法，并通过水下滑翔机海试数据表明，声源深度估计结果与真实值吻合较好，平均误差仅为7.27%，验证了本方法的有效性。 |
| 英文摘要: |
| Traditional deep-sea exploration methods often need to deploy large aperture arrays, which is not only costly but also limited in observation range. The emergence of new unmanned underwater vehicles provides a new means for traditional underwater acoustic detection, especially underwater gliders, which have become a powerful tool for underwater observation by relying on its characteristics of low cost, long endurance and wide coverage. However, in the aspect of underwater acoustic application, the underwater glider has the problem of small aperture, the acoustic information obtained is relatively limited, and the research on passive detection based on underwater glider is relatively few. In response to this problem, this paper analyzes the relationship between the time delay curve formed by a submarine reflected sound line and the receiving depth and receiving distance based on the multi-path arrival structure of the deep-sea sound shadow region. Through the approximation of equal grazing Angle and the approximation of equal sound velocity near the sea surface, a passive method for estimating the depth of the deep-sea sound shadow region near the sea surface by using the multi-path delay difference is proposed, which is suitable for underwater gliders and other mobile platforms. The data of underwater glider sea test show that the estimated depth of sound source is in good agreement with the real value, and the average error is only 7.27%, which verifies the effectiveness of the proposed method.
Keywords: Deep sea sound shadow zone; Multipath delay structure; Underwater glider; Passive sound source localization |
| DOI：10.11684/j.issn.1000-310X.2025.03.019 |
| 中文关键词: 深海声影区 多途到达结构 水下滑翔机 被动声源定位 |
| 英文关键词: Deep sea sound shadow zone Multipath delay structure Underwater glider Passive sound source localization |
| 基金项目:中国科学院先导专项 |
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