基于PIES观测东沙群岛附近声传播变化

Study on the sound propagation characteristics based on PIES observations near Dongsha Islands

摘要: 本研究旨在将PIES观测数据应用于海洋水声环境的监测。利用一次南海PIES观测数据，反演得到温盐剖面，进而计算声场信息。结合观测期间的暖涡及台风事件对反演及计算结果进行了分析验证。结果表明，PIES能够在长期连续观测中较为敏感地捕获上层水体及表面声道的变化特征，为水声通信、探测及潜航路径规划等提供参考，在水声研究及海洋军事环境保障中都具有良好的应用前景。

Abstract: The aim of this paper is to apply PIES observations to the monitoring of the marine hydroacoustic environment. The paper uses one PIES observation in the South China Sea to invert the temperature and salt profiles, and then calculates the acoustic field information. The inversion and calculation results are analysed and verified with the warm eddies and typhoon events during the observation period, and results show that PIES can more sensitive capture the variation characteristics of the upper water body and the surface acoustic channel in long-term continuous observation, which can provide a reference for hydroacoustic communication, detection and submarine path planning, and has a good prospect of application in the hydroacoustic research and the protection of marine military environment.