利用脉冲声反演深海海底声学参数
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- 英文论文题名：Geoacoustic inversion in deep water by using pulse signal
- 论文作者：徐东 ; 李风华 ; 郭永刚
- 英文论文作者：XU Dong ; LI Feng-hua ; GUO Yong-gang ; State Key Laboratory of Acoustics ; Institute of Acoustics ; Chinese Academy of Sciences ; University of Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院声学研究所声场声信息国家重点实验室;中国科学院大学;
- 论文关键词：地声反演 ; 深海 ; 分层海底 ; 脉冲信号
- 英文论文关键词：Geoacoustic inversion ; Deep water ; Stratified Seafloor ; Pulse signal
- 会议召开时间：2016-10-28
- 会议录名称：2016年全国声学学术会议论文集
- 语种：中文
- 分类号：P733.2
- 学会代码：OGSM
- 会议名称：2016年全国声学学术会议
- 会议地点：中国湖北武汉
- 主办单位：中国声学学会
- 学会名称：中国声学学会
- 页数：4
- 文件大小：729k
- 原文格式：D
- 会议级别：全国
摘要
本文提出一种在海底水平分层随距离不变的假定下,利用海底各层沉积层脉冲回波反演深海海底声学参数的方法。该方法基于收发距离、沉积层厚度和沉积层声速对沉积层内声线传播时间的影响构造代价函数,反演沉积层内厚度和声速,再利用Hamilton经验公式得到沉积层密度。该方法有效提高因距离定位不准和声速剖面失配导致的海底参数反演精度问题。理论和实验都证明了该方法的有效性。
This paper presents a method of estimating the sea bottom acoustic parameters based on the reflected pulse wave from the different sediment layer and the basement surface in the assumption of horizontal stratification. This method proposes a cost function to figure out the sediment acoustic parameters on account of the environmental effects(Range, layer thickness and layer velocity of sound) on the travel time in the settled layer. Besides,Hamilton experimental formulas are used to separating the sound speed and density. The process effectively improves the accuracy of inversion resulting from the errors of range and the sound speed profile. Results in experiment show that the proposed method is able to estimate the seafloor acoustic parameters in deep water.
This paper presents a method of estimating the sea bottom acoustic parameters based on the reflected pulse wave from the different sediment layer and the basement surface in the assumption of horizontal stratification. This method proposes a cost function to figure out the sediment acoustic parameters on account of the environmental effects(Range, layer thickness and layer velocity of sound) on the travel time in the settled layer. Besides,Hamilton experimental formulas are used to separating the sound speed and density. The process effectively improves the accuracy of inversion resulting from the errors of range and the sound speed profile. Results in experiment show that the proposed method is able to estimate the seafloor acoustic parameters in deep water.
引文
[1]Dix.C.H.Seismic velocities from surface measurements.Geophysics,1955.Vol.20 68-86.
[2]李风华,张仁和.由脉冲波形与传播损失反演海底声速与衰减系数.声学学报,2000,25(4):297-302.
[3]李整林,张仁和,鄢锦,李风华.由匹配场处理和传播损失反演海底参数.声学技术,2002年增刊.
[4]Li Z L,Zhang R H.A broadband geoacoustic inversion scheme[J].Chinese Physics Letters,2004;21(06):1100-1103.
[5]郭永刚,李风华,宫在晓,彭朝晖.利用近场的船噪声反演海底声参数.2008年全国声学学术会议论文集;27(5):112-113.
[6]李秀林,张仁和,李整林.利用声场的水平纵向相关性反演海底参数.声学技术,2004,23(z1):18-20.
[7]丘海宾,杨坤德.水平变化环境下的拖线阵海底参数反演研究.兵工学报,2011,32(3):298-304.
[8]刘建军,李风华.由混响衰减反演海底散射系数.声学技术,2003,22(z2):128-130.
[9]高伟,王宁,王好忠.黄海实验混响垂直相关统计反演海底参数.声学学报,2008,33(2):109-115.
[10]N.R.Chapman.Inversion of sound-speed and density profiles in deep ocean sediments[J].J.Acoustic.Soc.Am.,1986,79(5).
[11]S.Panda.Sediment classification based on impedance and attenuation estimation[J].J.Acoustic.Soc.Am.,1994,96(5).
[12]J.D.Sagers.Statistical inference of seabed sound-speed structure in the Gulf of Oman Basin[J].J.Acoustic.Soc.Am.,2014,135(6).
[13]E.L.Hamilton.Sound Velocity as a Function of Depth in Marine Sediments;J.Acoust.Soc.Am.,1985,78,1348-1355.
[14]S.Coen.On the elastic profiles ofa layered acoustic medium,Part.I,Plane-wavesources,J.Acoust.Soc.Am.,1981,71,785-789.
[15]A.E.Yagle.A Layer Stripping Fast Algorithm for Reconstructing a lossy layered medium,J.Acoust.Soc.Am.,1987,82(3):927-936.
[2]李风华,张仁和.由脉冲波形与传播损失反演海底声速与衰减系数.声学学报,2000,25(4):297-302.
[3]李整林,张仁和,鄢锦,李风华.由匹配场处理和传播损失反演海底参数.声学技术,2002年增刊.
[4]Li Z L,Zhang R H.A broadband geoacoustic inversion scheme[J].Chinese Physics Letters,2004;21(06):1100-1103.
[5]郭永刚,李风华,宫在晓,彭朝晖.利用近场的船噪声反演海底声参数.2008年全国声学学术会议论文集;27(5):112-113.
[6]李秀林,张仁和,李整林.利用声场的水平纵向相关性反演海底参数.声学技术,2004,23(z1):18-20.
[7]丘海宾,杨坤德.水平变化环境下的拖线阵海底参数反演研究.兵工学报,2011,32(3):298-304.
[8]刘建军,李风华.由混响衰减反演海底散射系数.声学技术,2003,22(z2):128-130.
[9]高伟,王宁,王好忠.黄海实验混响垂直相关统计反演海底参数.声学学报,2008,33(2):109-115.
[10]N.R.Chapman.Inversion of sound-speed and density profiles in deep ocean sediments[J].J.Acoustic.Soc.Am.,1986,79(5).
[11]S.Panda.Sediment classification based on impedance and attenuation estimation[J].J.Acoustic.Soc.Am.,1994,96(5).
[12]J.D.Sagers.Statistical inference of seabed sound-speed structure in the Gulf of Oman Basin[J].J.Acoustic.Soc.Am.,2014,135(6).
[13]E.L.Hamilton.Sound Velocity as a Function of Depth in Marine Sediments;J.Acoust.Soc.Am.,1985,78,1348-1355.
[14]S.Coen.On the elastic profiles ofa layered acoustic medium,Part.I,Plane-wavesources,J.Acoust.Soc.Am.,1981,71,785-789.
[15]A.E.Yagle.A Layer Stripping Fast Algorithm for Reconstructing a lossy layered medium,J.Acoust.Soc.Am.,1987,82(3):927-936.
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