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時(shí)空域聯(lián)合的水下未知線(xiàn)譜目標(biāo)檢測(cè)方法

王逸林,  馬世龍,  鄒男,  梁國(guó)龍

王逸林, 馬世龍, 鄒男, 梁國(guó)龍. 時(shí)空域聯(lián)合的水下未知線(xiàn)譜目標(biāo)檢測(cè)方法[J]. 電子與信息學(xué)報(bào), 2019, 41(7): 1682-1689. doi: 10.11999/JEIT180796
引用本文: 王逸林, 馬世龍, 鄒男, 梁國(guó)龍. 時(shí)空域聯(lián)合的水下未知線(xiàn)譜目標(biāo)檢測(cè)方法[J]. 電子與信息學(xué)報(bào), 2019, 41(7): 1682-1689. doi: 10.11999/JEIT180796
Yilin WANG, Shilong MA, Nan ZOU, Guolong LIANG. Detection of Unknown Line-spectrum Underwater Target Using Space-time Processing[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1682-1689. doi: 10.11999/JEIT180796
Citation: Yilin WANG, Shilong MA, Nan ZOU, Guolong LIANG. Detection of Unknown Line-spectrum Underwater Target Using Space-time Processing[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1682-1689. doi: 10.11999/JEIT180796

時(shí)空域聯(lián)合的水下未知線(xiàn)譜目標(biāo)檢測(cè)方法

doi: 10.11999/JEIT180796
  • 1.

    哈爾濱工程大學(xué)水聲技術(shù)重點(diǎn)實(shí)驗(yàn)室? ?哈爾濱? ?150001

  • 2.

    哈爾濱工程大學(xué)水聲工程學(xué)院? ?哈爾濱? ?150001

基金項(xiàng)目: 國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC1400101)，國(guó)家自然科學(xué)基金(11504064)，黑龍江省歸國(guó)人員科學(xué)基金 (JJ2016LX0051)
詳細(xì)信息
    作者簡(jiǎn)介:

    王逸林：男，1979年生，研究員，博士生導(dǎo)師，研究方向?yàn)樗曅盘?hào)處理、水下聲信號(hào)被動(dòng)探測(cè)等

    馬世龍：男，1987年生，博士生，研究方向?yàn)殛嚵行盘?hào)處理、水下目標(biāo)被動(dòng)探測(cè)

    鄒男：男，1986年生，講師，碩士生導(dǎo)師，研究方向?yàn)樗曅盘?hào)處理、水下目標(biāo)被動(dòng)探測(cè)等

    梁國(guó)龍：男，1964年生，教授，博士生導(dǎo)師，研究方向?yàn)樗曅盘?hào)處理、水下目標(biāo)被動(dòng)探測(cè)等

    通訊作者:

    鄒男　zounan@hrbeu.edu.cn

  • 中圖分類(lèi)號(hào): TB566

Detection of Unknown Line-spectrum Underwater Target Using Space-time Processing

  • 1.

    Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China

  • 2.

    College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

Funds: The National Key R&D Plan(2016YFC1400101), The National Natural Science Foundation of China (11504064), Heilongjiang Provience Scientific Research Foundation for Returned Scholars (JJ2016LX0051)
  • 摘要: 水下線(xiàn)譜目標(biāo)被動(dòng)檢測(cè)中，目標(biāo)輻射線(xiàn)譜信號(hào)的方位、頻率、個(gè)數(shù)等信息通常未知，且線(xiàn)譜檢測(cè)性能容易受到寬帶干擾及背景噪聲的影響。針對(duì)此問(wèn)題，該文提出一種時(shí)空域聯(lián)合的未知線(xiàn)譜目標(biāo)檢測(cè)方法(STJD)。首先，利用線(xiàn)譜信號(hào)的相干特性，構(gòu)建了一種能夠自主匹配未知線(xiàn)譜信號(hào)的時(shí)空域聯(lián)合濾波器，用以濾除接收信號(hào)中的寬帶背景干擾及噪聲。之后，對(duì)濾波信號(hào)進(jìn)行常規(guī)頻域波束形成得到空時(shí)2維波束輸出，其具有相對(duì)純凈的線(xiàn)譜譜峰。在此基礎(chǔ)上提取線(xiàn)譜并利用線(xiàn)譜信息計(jì)算空間方位譜，進(jìn)而實(shí)現(xiàn)對(duì)線(xiàn)譜目標(biāo)的檢測(cè)。理論推導(dǎo)及仿真結(jié)果表明該文方法能夠?qū)ξ粗€(xiàn)譜信號(hào)進(jìn)行最小均方誤差意義下的時(shí)空濾波，并能充分地利用線(xiàn)譜信息進(jìn)行線(xiàn)譜目標(biāo)的被動(dòng)檢測(cè)。與已有基于線(xiàn)譜特征的線(xiàn)譜目標(biāo)檢測(cè)方法相比，該文方法對(duì)信噪比(SNR)的要求較低，在多目標(biāo)、多線(xiàn)譜等復(fù)雜情況下具有較好的線(xiàn)譜目標(biāo)檢測(cè)性能。
    Abstract: For the passive detection of underwater line-spectrum target, the information such as the azimuth, frequency and the number of the line-spectrum signals is usually unknown, and the line-spectrum detection performance is affected by broadband interferences and noise. For this issue, a Space-Time Joint Detecion (STJD) method of detecting the unknown line-spectrum target by space-time domain processing is proposed. Firstly, a space-time filter that autonomously matches the unknown line-spectrum signals is constructed to filter out the broadband interferences and noise. Secondly, the conventional frequency domain beamforming is performed on the filtered signals, and then a space-time two-dimensional beam output with relatively pure line-spectrum spectral peaks is obtained. The line-spectrum signals are extracted from the space-time two-dimensional beam output, and the spatial spectrum is calculated using the extracted line-spectrum information. Then, the detection of the line-spectrum target is realized. Theoretical derivation and simulation results verify that the proposed method performs the spatiotemporal filtering on the unknown line-spectrum signals in the minimum mean square error sense, and fully utilizes the line-spectrum information for the passive detection of underwater line-spectrum target. Compared with the existing line-spectrum target detection methods utilizing the line-spectrum features, the proposed method requires lower Signal to Noise Ratio (SNR), and has better detection performance under the complex multi-target multi-spectrum-line conditions.
    • HTML全文

  • 圖  1  陣列接收信號(hào)示意圖

    圖  2  第$i $ 路時(shí)空2維線(xiàn)譜增強(qiáng)器結(jié)構(gòu)圖

    圖  3  時(shí)空域聯(lián)合的水下未知線(xiàn)譜目標(biāo)檢測(cè)方法框圖

    圖  4  時(shí)空濾波前后的方位頻率2維波束輸出

    圖  5  信噪比為–20 dB時(shí)各方法波束輸出

    圖  6  信噪比為–30 dB時(shí)各方法波束輸出

    圖  7  多目標(biāo)多線(xiàn)譜情況下各方法性能對(duì)比

    圖  8  不同SNR下的各方法ROC曲線(xiàn)

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  • 收稿日期:  2018-08-16
  • 修回日期:  2019-02-26
  • 網(wǎng)絡(luò)出版日期:  2019-03-23
  • 刊出日期:  2019-07-01

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