| 基于自适应时频分析的海底参数反演 |
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| 引用本文： | 张德明, 李整林, 张仁和. 基于自适应时频分析的海底参数反演[J]. 声学学报, 2005, 30(5): 415-419. DOI: 10.15949/j.cnki.0371-0025.2005.05.005 |
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| 作者姓名： | 张德明 李整林 张仁和 |
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| 作者单位： | 1.中国科学院声学研究所声场声信息国家重点实验室 北京 100080 |
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| 基金项目： | 国家自然科学基金资助项目(10474112) |
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| 摘 要： | 通过一种自适应时频分析方法获取浅海简正波信号的群延迟数据,与简正波群延迟特性相匹配,从而实现了在单水听器信号基础上进行海底声速、密度等参数的反演。利用反演参数计算得到的1-4号简正波群速度与通过时频分析得到的实验结果符合的很好,对于海水深度、沉积层深度、声速、密度等参数给出了可靠的反演结果,实验数据处理结果表明这是一种简单、快速而有效的参数反演方法。
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| 收稿时间： | 2004-03-04 |
| 修稿时间： | 2004-05-18 |
Inversion for the bottom geoacoustic parameters based on adaptive time-frequency analysis |
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| ZHANG Deming, LI Zhenglin, ZHANG Renhe. Inversion for the bottom geoacoustic parameters based on adaptive time-frequency analysis[J]. ACTA ACUSTICA, 2005, 30(5): 415-419. DOI: 10.15949/j.cnki.0371-0025.2005.05.005 |
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| Authors: | ZHANG Deming LI Zhenglin ZHANG Renhe |
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| Affiliation: | 1.National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences Beijing 100080 |
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| Abstract: | The group delays of normal modes in shallow water are obtained by an adaptive time-frequency analysis. The bottom sound velocity and density are inverted based on single hydrophone by matching the group delays of normal modes. Group speeds of mode 1~4 for the inverted parameters provide an excellent match to the experimental data obtained from time-frequency analysis, several inverted parameters include the depth of the water, the depth, density and sound speed of the deposit are reliable, and the processed results indicate that it is a simple, fast and effective approach for geoacoustic inversion. |
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