利用渔船噪声矢量场对地声参数的估计
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摘要
针对航船噪声实现海底声学参数稳健反演及不确定性分析的问题,研究了联合声压场和矢量场进行可靠地声参数反演的可行性。采用匹配场反演算法对单矢量水听器采集的航船噪声数据进行处理,给出了地声参数的估计值和后验概率分布。理论分析和数值仿真表明:垂直质点振速分量比单独使用声压场能提供更丰富的声信号传输特性;联合声压场和垂直质点振速分量的反演结果比单独处理声压场或垂直质点振速分量具有更高的稳健性和准确性。
Seabed geoacoustic parameters and associated uncertainties are important for sonar performance prediction and related applications,and the feasibility of jointly using pressure and vector fields to increase geoacoustic inversion reliability is discussed. The matching field inversion algorithm is used to process ship noise data collected by a single-vector hydrophone,and the estimation value and posterior probability distribution is derived. Theoretical analysis and a numerical simulation suggest that the component of the vertical particle velocity provides more abundant acoustic signal transmission characteristics than when using the acoustic pressure field only,and more consolidated estimates can be obtained through using pressure and vector fields jointly than by treating them individually.
Seabed geoacoustic parameters and associated uncertainties are important for sonar performance prediction and related applications,and the feasibility of jointly using pressure and vector fields to increase geoacoustic inversion reliability is discussed. The matching field inversion algorithm is used to process ship noise data collected by a single-vector hydrophone,and the estimation value and posterior probability distribution is derived. Theoretical analysis and a numerical simulation suggest that the component of the vertical particle velocity provides more abundant acoustic signal transmission characteristics than when using the acoustic pressure field only,and more consolidated estimates can be obtained through using pressure and vector fields jointly than by treating them individually.
引文
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[10]LESLIE C B,KENDALL J M,JONES J L.Hydrophone for measuring particle velocity[J].The journal of the acoustical society of America,1956,28(4):711-715.
[11]惠俊英,刘宏,余华兵,等.声压振速联合信息处理及其物理基础初探[J].声学学报,2000,25(4):303-307.HUI Junying,LIU Hong,YU Huabing,et al.Study on the physical basis of pressure and particle velocity combined processing[J].Acta acustica,2000,25(4):303-307.
[12]彭汉书,李风华.由矢量水听器阵列反演浅海地声参数[J].声学技术,2008,27(2):163-167.PENG Hanshu,LI Fenghua.Geoacoustic inversion from vector hydrophone array in shallow water[J].Technical acoustics,2008,27(2):163-167.
[13]BREKHOVSKIKH L M,LYSANOV Y P.Fundamentals of ocean acoustics[M].3rd ed.New York:Springer,2003.
[14]KALMAN R E.A new approach to linear filtering and prediction problems[J].Journal of basic engineering,1960,82(1):35-45.
[15]REN Qunyan,HERMAND J P.Ship-noise based geoacoustic inversion via particle filtering of vertical specific acoustic impedance[C]//Proceedings of 2016 IEEE/OES China Ocean Acoustics.Harbin,China,2016.
[2]BAGGEROER A B,KUPERMAN W A,MIKHALEVSKY P N.An overview of matched field methods in ocean acoustics[J].IEEE journal of oceanic engineering,1993,18(4):401-424.
[3]杨坤德,马远良,张忠兵,等.不确定环境下的稳健自适应匹配场处理研究[J].声学学报,2006,31(3):255-262.YANG Kunde,MA Yuanliang,ZHANG Zhongbing,et al.Robust adaptive matched field processing with environmental uncertainty[J].Acta acustica,2006,31(3):255-262.
[4]TOLSTOY A,CHAPMAN N R,BROOKE G.Workshop'97:benchmarking for geoacoustic inversion in shallow water[J].Journal of computational acoustics,1998,6(01n02):1-28.
[5]CHAPMAN N R,CHIN-BING S,KING D,et al.Benchmarking geoacoustic inversion methods for range-dependent waveguides[J].IEEE journal of oceanic engineering,2003,28(3):320-330.
[6]GERSTOFT P.Inversion of seismoacoustic data using genetic algorithms and a posteriori probability distributions[J].The journal of the acoustical society of America,1994,95(2):770-782.
[7]DOSSO S E.Quantifying uncertainty in geoacoustic inversion.I.A fast Gibbs sampler approach[J].The journal of the acoustical society of America,2002,111(1):129-142.
[8]DAHL P H,MILLER J H,CATO D H,et al.Underwater ambient noise[J].Acoustics today,2007,2:23-33.HEANEY K D.Rapid geoacoustic characterization using a surface ship of opportunity[J].IEEE journal of oceanic engineering,2004,29(1):88-99.
[9]REN Qunyan,HERMAND J P.Acoustic interferometry for geoacoustic characterization in a soft-layered sediment environment[J].The journal of the acoustical society of America,2013,133(1):82-93.
[10]LESLIE C B,KENDALL J M,JONES J L.Hydrophone for measuring particle velocity[J].The journal of the acoustical society of America,1956,28(4):711-715.
[11]惠俊英,刘宏,余华兵,等.声压振速联合信息处理及其物理基础初探[J].声学学报,2000,25(4):303-307.HUI Junying,LIU Hong,YU Huabing,et al.Study on the physical basis of pressure and particle velocity combined processing[J].Acta acustica,2000,25(4):303-307.
[12]彭汉书,李风华.由矢量水听器阵列反演浅海地声参数[J].声学技术,2008,27(2):163-167.PENG Hanshu,LI Fenghua.Geoacoustic inversion from vector hydrophone array in shallow water[J].Technical acoustics,2008,27(2):163-167.
[13]BREKHOVSKIKH L M,LYSANOV Y P.Fundamentals of ocean acoustics[M].3rd ed.New York:Springer,2003.
[14]KALMAN R E.A new approach to linear filtering and prediction problems[J].Journal of basic engineering,1960,82(1):35-45.
[15]REN Qunyan,HERMAND J P.Ship-noise based geoacoustic inversion via particle filtering of vertical specific acoustic impedance[C]//Proceedings of 2016 IEEE/OES China Ocean Acoustics.Harbin,China,2016.