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一種基于瞬時(shí)相位方差加權(quán)的線譜檢測器

鄭恩明 余華兵 陳新華 孫長瑜

鄭恩明, 余華兵, 陳新華, 孫長瑜. 一種基于瞬時(shí)相位方差加權(quán)的線譜檢測器[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1763-1768. doi: 10.11999/JEIT141347
引用本文: 鄭恩明, 余華兵, 陳新華, 孫長瑜. 一種基于瞬時(shí)相位方差加權(quán)的線譜檢測器[J]. 電子與信息學(xué)報(bào), 2015, 37(7): 1763-1768. doi: 10.11999/JEIT141347
Zheng En-ming, Yu Hua-bing, Chen Xin-hua, Sun Chang-yu. Weighted Line Spectrum Detector Based on Instantaneous Phase Variance[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1763-1768. doi: 10.11999/JEIT141347
Citation: Zheng En-ming, Yu Hua-bing, Chen Xin-hua, Sun Chang-yu. Weighted Line Spectrum Detector Based on Instantaneous Phase Variance[J]. Journal of Electronics & Information Technology, 2015, 37(7): 1763-1768. doi: 10.11999/JEIT141347

一種基于瞬時(shí)相位方差加權(quán)的線譜檢測器

doi: 10.11999/JEIT141347
基金項(xiàng)目: 

國家自然科學(xué)基金(61372180)和中國科學(xué)院聲學(xué)研究所青年人才領(lǐng)域前沿項(xiàng)目

Weighted Line Spectrum Detector Based on Instantaneous Phase Variance

  • 摘要: 針對(duì)水下目標(biāo)未知線譜的檢測問題,依據(jù)水下目標(biāo)輻射噪聲含有高強(qiáng)度穩(wěn)定線譜這一特征,該文提出一種基于瞬時(shí)相位方差加權(quán)的線譜檢測方法。該方法利用目標(biāo)線譜頻率單元對(duì)應(yīng)瞬時(shí)相位比較穩(wěn)定,背景噪聲頻率單元對(duì)應(yīng)瞬時(shí)相位比較隨機(jī)的特點(diǎn),對(duì)各頻率單元進(jìn)行瞬時(shí)相位方差加權(quán),可以進(jìn)一步抑制背景噪聲能量干擾,增強(qiáng)目標(biāo)線譜檢測信噪比(SNR)增益,實(shí)現(xiàn)對(duì)水下目標(biāo)輻射噪聲中未知線譜的檢測。理論分析和實(shí)驗(yàn)結(jié)果表明:該方法可以較好地增強(qiáng)目標(biāo)線譜能量、抑制噪聲、提高信噪比,在抗復(fù)雜信道檢測、識(shí)別領(lǐng)域具有良好的應(yīng)用前景。
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出版歷程
  • 收稿日期:  2014-10-20
  • 修回日期:  2014-12-26
  • 刊出日期:  2015-07-19

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