| 赵梅.负跃层条件下浅海海底单参数反演技术[J].声学技术,2020,39(5):525~531 |
| 负跃层条件下浅海海底单参数反演技术 |
| Seabed single parameter inversion in thermocline shallow water |
| 投稿时间：2020-07-16 修订日期：2020-07-24 |
| DOI：10.16300/j.cnki.1000-3630.2020.05.002 |
| 中文关键词: 负跃层 海底单参数 地声反演 |
| 英文关键词: thermocline shallow water model seabed single parameter geoacoustic inversion |
| 基金项目:装备预先研究项目资助（3020203010903） |
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| 中文摘要: |
| 海底参数反演是获取海底声学特性一种经济高效的办法。近年来，课题组提出用小掠射角下海底反射损失随掠射角的变化率FdB（dB·rad-1）作为描述海底的单参数，建立了浅海均匀水层和负跃层水文条件下的海底单参数模型。负跃层单参数模型的建立，为海底单参数反演提供了新的设计思路。文章基于浅海负跃层海底单参数模型，设计海底单参数地声反演方法。首先对负跃层水文条件下浅海海底单参数模型进行简单的描述和介绍；然后在浅海负跃层单参数模型基础上，利用声传播损失对海底单参数进行反演；最后利用实验数据对反演方法的有效性进行了验证。 |
| 英文摘要: |
| Comparing with the on-site coring, geoacoustic inversion method is an effective and economical way for seabed sediment classification. In recent years, we proposed the slope of bottom loss versus grazing angle Fdb (dB/radian) as the single parameter to describe the characteristics of sea bottom. The establishment of single parameter model in thermocline condition provides a new way for the single parameter inversion. Based on this model, a geoacoustic inversion method is proposed. In this paper, the single parameter model in thermocline shallow water is introduced firstly, and then the transmission loss inversion method is proposed for the single parameter inversion. Finally, the applicability of inversion method in thermocline shallow water is proved by experimental data. |
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