利用环境噪声进行安静目标探测
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摘要
该文回顾了近年来该课题组利用环境噪声互相关方法和环境噪声自相关方法进行安静目标探测的主要工作。首先简单回顾了利用环境噪声互相关方法和环境噪声自相关方法进行安静目标探测的理论,然后介绍了两次利用海浪噪声进行安静目标探测的实验。通过海浪噪声实验验证了利用环境噪声互相关和自相关进行安静目标探测的可行性。最后对利用环境噪声互相关进行安静目标探测所需要的累积时间进行了讨论,并给出了累积时间的下界。
This paper reviews our recent works about silence target detection using ambient noise cross correlation method and autocorrelation method. The theory of silence target detection using ambient noise cross correlation method and autocorrelation method are introduced at first. Then two experiments about target detection using surf-noise are reviewed, whose results support the theory. At last the required accumulated time in the ambient noise cross correlation method is discussed and a lower bound of the accumulated time is given.
This paper reviews our recent works about silence target detection using ambient noise cross correlation method and autocorrelation method. The theory of silence target detection using ambient noise cross correlation method and autocorrelation method are introduced at first. Then two experiments about target detection using surf-noise are reviewed, whose results support the theory. At last the required accumulated time in the ambient noise cross correlation method is discussed and a lower bound of the accumulated time is given.
引文
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[22]Li X,Chi J,Gao D,et al.Extraction of scattering echo time by surf noise background subtracted autocorrelation[J].J.Acoust.Soc.Am.,2017,142(1):EL1-EL6.
[23]迟静,李小雷,高大治,等.利用海浪噪声自相关实现散射体无源探测[J].物理学报,2017,66(19):194304.Chi Jing,Li Xiaolei,Gao Dazhi,et al.Passive detection of scatterer using autocorrelation of surf noise[J].Acta Phys.Sin.,2017,66(19):194304.
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[2]Buckingham M J,Berkhout B V,Glegg S A L.Imaging the ocean with ambient noise[J].Nature,1992,356(6367)327-329.
[3]Pallayil V,Chitre M,Kuselan S,et al.Development of a secondgeneration underwater acoustic ambient noise imaging camera[J].IEEE J.Ocean.Eng.,2016,41(1)175-189.
[4]Lobkis O I,Weaver R L.On the emergence of the Green’s function in the correlations of a diffuse field[J].J.Acoust Soc.Am.,2001,110(6):3011-3017.
[5]Weaver R L.Equipartition and retrieval of Green’s function[J].Earthq.Sci.,2010,23(5):397-402.
[6]Malcolm A E,Scales J A,van Tiggelen B A.Extracting the Green function from diffuse,equipartitioned waves[J]Phys.Rev.E,2004,70(1):015601.
[7]Derode A,Larose E,Campillo M,et al.How to estimate the Green’s function of a heterogeneous medium between two passive sensors?Application to acoustic waves[J]Appl.Phys.Lett.,2003,83(15):3054-3056.
[8]Snieder R.Extracting the Green’s function from the correlation of coda waves:a derivation based on stationary phase[J].Phys.Rev.E,2004,69(2):046610.
[9]Snieder R,van Wijk K,Haney M,et al.Cancellation of spurious arrivals in Green’s function extraction and the generalized optical theorem[J].Phys.Rev.E,2008,78(2)036606.
[10]Wapenaar K,Fokkema J,Snieder R.Retrieving the Green’s function in an open system by cross correlation:a comparison of approaches(L)[J].J.Acoust.Soc.Am.,2005,118(5):2783-2786.
[11]Wapenaar K,Slob E,Snieder R.Unified Green’s function retrieval by cross correlation[J].Phys.Rev.Lett.,2006,97(23):234301.
[12]Lin J,Li X,Wang N.Rayleigh reciprocity relations:applications[J].Chin.Phys.B,2016,25(12):124303.
[13]Garnier J,Papanicolaou G.Passive sensor imaging using cross correlations of noisy signals in a scattering medium[J].SIAM J.Imaging.Sci.,2009,2(2):396-437.
[14]Lani S,Satir S,Gurun G,et al.High frequency ultrasonic imaging using thermal mechanical noise recorded on capacitive micromachined transducer arrays[J].Appl.Phys.Lett.,2011,99(22):224103.
[15]李国富,黎洁,高大治,等.利用环境噪声互相关实现散射体无源成像[J].声学学报,2016,41(1):49-58.Li Guofu,Li Jie,Gao Dazhi,et al.Passive imaging of scatterers based on cross-correlations of ambient noise[J].Acta Acustica,2016,41(1):49-58.
[16]黎洁,李国富,高大治,等.单边噪声源环境下的格林函数提取[J].声学学报,2017,42(2):143-151.Li Jie,Li Guofu,Gao Dazhi,et al.Green’s function retrieval in case of one-sided illumination[J].Acta Acustica,2017,42(2):143-151.
[17]Li J,Gerstoft P,Gao D,et al.Localizing scatterers from surf noise cross correlations[J].J.Acoust.Soc.Am.,2017,141(1):EL64-EL69.
[18]Zhou J,Piao S,Qu K,et al.Extracting the time domain Green’s function from ocean ambient noise using acoustic vector sensors[J].J.Acoust.Soc.Am.,2017,142(5):EL507-EL511.
[19]Leroy C,Lani S,Sabra K G,et al.Enhancing the emergence rate of coherent wavefronts from ocean ambient noise correlations using spatio-temporal filters[J].J.Acoust.Soc.Am.,2012,132(2):883-893.
[20]Stehly L,Cupillard P,Romanowicz B.Towards improving ambient noise tomography using simultaneously curveletdenoising filters and SEM simulations of seismic ambient noise[J].Comptes Rendus Geoscience,2011,343(8):591-599.
[21]Moreau L,Stehly L,BouéP,et al.Improving ambient noise correlation functions with an SVD-based Wiener filter[J].Geophysical Journal International,2017,211(1):418-426.
[22]Li X,Chi J,Gao D,et al.Extraction of scattering echo time by surf noise background subtracted autocorrelation[J].J.Acoust.Soc.Am.,2017,142(1):EL1-EL6.
[23]迟静,李小雷,高大治,等.利用海浪噪声自相关实现散射体无源探测[J].物理学报,2017,66(19):194304.Chi Jing,Li Xiaolei,Gao Dazhi,et al.Passive detection of scatterer using autocorrelation of surf noise[J].Acta Phys.Sin.,2017,66(19):194304.
[24]Bleistein N.Mathematical methods for wave phenomena[M].Pittsburgh:Academic Press,2012.