| 利用直达波和海面反射波到达时延反演深海声速剖面 |
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| 引用本文： | 余炎欣,李晟昊,季桂花,李整林.利用直达波和海面反射波到达时延反演深海声速剖面[J].声学技术,2022,41(4):512-517. |
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| 作者姓名： | 余炎欣 李晟昊 季桂花 李整林 |
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| 作者单位： | 中国科学院声学研究所声场声信息国家重点实验室, 北京 100190;中国科学院大学, 北京 100049;中国科学院声学研究所南海研究站, 海南海口 570105;中山大学海洋工程与技术学院, 广东珠海 519082 |
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| 基金项目： | 国家自然科学基金资助项目(11874061)。 |
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| 摘 要： | 研究了利用直达波与海面反射波到达时延反演深海声速剖面的方法，采用最严经验模态方法组织利用历史水文数据并进行反演，并利用 2016年南海中南部冬季调查的实验数据进行了验证。反演结果与实测声速剖面在深度小于 710 m处的平均绝对误差的最大值为 2.15 m·s-1，反演结果与实测值基本相符。
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| 关 键 词： | 到达时延 声速剖面反演 最严经验模态 |
| 收稿时间： | 2021/5/12 0:00:00 |
| 修稿时间： | 2021/5/24 0:00:00 |
Deep sea sound speed profile inversion by using ray arrival time difference between direct wave and sea surface reflection wave |
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| YU Yanxin,LI Shenghao,JI Guihu,LI Zhenglin.Deep sea sound speed profile inversion by using ray arrival time difference between direct wave and sea surface reflection wave[J].Technical Acoustics,2022,41(4):512-517. |
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| Authors: | YU Yanxin LI Shenghao JI Guihu LI Zhenglin |
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| Affiliation: | State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100049, China;Hainan Acoustics Laboratory, Chinese Academy of Sciences, Haikou 570105, Hainan, China; School of Marine Engineering and Technology, Sun Yat-sen University, Zhuhai 519028, Guangdong, China |
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| Abstract: | The problem using arrival time difference between direct wave and sea surface reflection wave to invert the sound speed profile (SSP) in deep-ocean is studied based on ray theory. The gravest empirical mode (GEM) method is employed to organize the historical hydrographic data for SSPs inversion. Experimental data of the winter survey in the South China Sea in 2016 are analyzed. It is shown that the inverted SSP is fitted well with the measured SSP, and the maximum value of the absolute error is 2.15 m·s-1 in the shallow water layer (0 ~ 710 m). |
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| Keywords: | arrival time difference sound speed profile inversion gravest empirical mode |
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