中国海洋大学学报（自然科学版）2025，Vol.55Issue(6)：1-8,8.DOI:10.16441/j.cnki.hdxb.20240166
内孤立波引起的声场起伏特征研究
Investigation of Sound Field Fluctuation Characteristics Caused by Internal Solitary Waves
摘要
Abstract
The propagation of internal solitary waves(ISW)perturbs the sound velocity field,which in turn causes sound field fluctuations.In this paper,the cyclic effects on the sound field produced by ISW propagating in multiple sound ray up-turning regions of sound rays with different types of initial emission angles are investigated by using numerical simulation as a research tool.The frequency of fluc-tuations for two physical quantities,the sound ray grazing angle and the sound energy arrival time,are analyzed.It is found that using the Product of the Slope and the even square of the Difference between two points of the acoustic parameter-time curve(PSD)processing method is more likely to extract sig-nificant sound field fluctuation features from these two physical quantities.In addition,the effect of higher order PSD parameters on the extraction effect of sound field fluctuation features is discussed.The results show that the appropriate higher-order PSD parameters can improve the extraction ability of the PSD processing method for sound field fluctuation features.关键词
声场起伏/内孤立波/PSD处理方法/高阶参数Key words
sound field fluctuation/internal solitary wave/PSD processing method/higher order pa-rameters分类
海洋学引用本文复制引用
郑英东,林巨,陈旭,孟静,王欢..内孤立波引起的声场起伏特征研究[J].中国海洋大学学报（自然科学版）,2025,55(6):1-8,8.基金项目
国家重点研究发展计划项目(2021YFC3101603)资助 Supported by the National Key Research and Development Program of China(2021YFC3101603) （2021YFC3101603）
