浅海波导宽带声源单水听器被动测距
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摘要
通过将warping变换与群延迟理论相结合,提出了一种基于单水听器的浅海波导宽带声源被动测距的方法。宽带声信号在浅海波导中以不同阶简正波叠加的形式传播,各阶简正波到达水听器的时刻也各不相同,利用warping变换可以对各阶简正波进行有效分离。对分离后的信号进行时频分析处理后可以得到任意两阶简正波在各个频点下的时延,将其结果与群延迟理论相结合,可推导出声源传播距离的计算公式。在已知海水声速剖面以及海深两个主要环境参数的情况下,即可对声源进行准确的被动测距。该方法计算量小,测量简单方便。仿真处理结果验证了本方法的可行性。
By combining warping transformation with group-delay theory, a method of passive broadband sound source range estimation on a single hydrophone in shallow water waveguides is presented. The transmission of broadband sound signals in the shallow water waveguides is in the form of the superposition of different normal modes, the arrival times to hydrophone of different normal modes are also different; the normal mode signals can be separated effectively by warping transformation. The time delay at every frequency of arbitrary two normal modes can be calculated after a time-frequency analysis processing, and then, combining the results with group-delay theory, the sound source propagation distance formula can be derived. While the sound speed profile and depth of waveguides these two marine environmental parameters are known, the source range can be estimated exactly. What's more, this method need a small amount of calculation, the measurement is simple and convenient. The feasibility of this method is verified by the results of simulations and experimental data.
引文
[1]周士弘.分层介质波导中的声矢量场传播[J].哈尔滨工程大学学报,2004,25(1):38-42.
    [2]杨士莪.单矢量传感器多目标分辨的一种方法[J].哈尔滨工程大学学报,2003,24(6):591-95.
    [3]李想,张殿伦,孙大军,郑翠娥.高精度超短基线定位系统的实现[J].计算机工程与应用.2007,43(24):176-178.
    [4]Baggeroer A B,Kuperman W A,Mikhalevsky P N.An over view of matched field methods in ocean acoustics[C].IEEE JOCE,1993,18(4):401:424.
    [5]Hassab J C.Contact localization and motion analysis in oceanic environment:a perspective[C].IEEE JOCE,1983,8(1):136:147.
    [6]ZHAO Zhen-dong,WANG Ning,GAO Da-Zhi,WANG Hao-Zhong."Broadband source ranging in shallow water using the S2-interference spectrum".CHIN.PHYS.LETT.Vol 27.No.6(2010)
    [7]sunwoong Lee and Nicholas C.makris."The array invariant".J.Acoust.Soc.Am.Vo1.119 336-351(2006)
    [8]Bonnel J,Chapman N R.Geoacoustic inversion in a dispersive waveguide using warping operators.J Acoust Soc Am,2011,130:EL101–107
    [9]J.Bonnel,C.Gervaise,B.Nicolas and J′er?ome I.Mars,Estimation of modal group velocities with a single receiver for geoacoustic inversion in shallow water,J.Acoust.Soc.Am.128(2),2010.
    [10]Baraniuk R,Jones D.Unitary equivalence:A new twist on signal processing.IEEE Trans Signal Proc,1995,43:2269–2282
    [11]Touze G L,Nicolas B,Mars J I,et al.Matched representations and filters for guided waves.IEEE Trans Signal Proc,2009,57:1783–1795
    [12]J.Bonnel.C.Gervaise,B.Nicolas,and J.I.Mars.Single-receiver geoacoustic inversion using modal reversal[J].J Acoust Soc Am,2012,131(1):119-128P.
    [13]张爽,尚启春,张寅权,王宁.宽带测距的阵不变量方法研究[J].声学技术.2012,31(4):420-423.
    [14]张明瀚.基于时延估计的声源定位系统研究.重庆大学硕士学位论文.2009.
    [15]杨士莪.水声传播原理.哈尔滨工程大学出版社,2007:1.
    [16]戚聿波,周士弘,张仁和,张波,张云.水平变换波导中模态特征频率与声源距离被动估计[J].物理学报.2014,63(4):044303-1-044303-1.
    [17]徐国军,李伟,易汉如.一种基于单水听器的水下目标声源测距方法[J].声学技术.2013,32(3):203-206.
    [18]惠俊英,惠娟.矢量声信号处理基础[M].北京:国防工业出版社,2009.
    [19]J.Bonnel.Aaron M.Thode,Susanna B.Blackwell and Katherine Kim,A.Michael Macrander.Range estimation of bowhead whale(Balaena mysticetus)calls in the Arctic using a single hydrophone[J].J Acoust Soc Am,2014,136(1):145-155P.
    [20]Shima H.Abadi.Aaron M.Thode,Susanna B.Blackwell and David R.Dowling.Ranging bowhead whale calls in a shallow-water dispersive waveguide[J].J Acoust Soc Am,2014,136(1):130-144P.
    [21]J.Bonnel,G L Touze,C.Gervaise.Automatic and passive whale localization in shallow water using gunshots[J].Oceans 2008Quebec City,September 15-18,2008,p1.

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