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相继脉冲混响中非相关成分的分析及其抑制
引用本文:陈文剑,孙辉,朱广平,张明辉.相继脉冲混响中非相关成分的分析及其抑制[J].应用声学,2010,29(5):336-343.
作者姓名:陈文剑  孙辉  朱广平  张明辉
作者单位:哈尔滨工程大学水声技术重点实验室,哈尔滨,150001
摘    要:沉底目标探测实验时,相继脉冲混响之间存在非相关成分。结合混响时-频谱图分析,给出了引起相继脉冲混响之间非相关成分的影响因素。根据概率论中的大数定律,采用了一种相继脉冲混响积累抵消的方法以对非相关成分进行抑制。通过对实验数据的分析结果表明,所用方法可以抑制混响之间的非相关成分,使时-频谱图中混响背景变的更加均匀,有利于目标信号的检测。

关 键 词:混响  相继脉冲间  时-频谱图  相关系数  积累抵消

Analysis and suppression of the non-correlated components in successive pulses reverberation
CHEN Wen-jian,SUN Hui,ZHU Guang-ping and ZHANG Ming-hui.Analysis and suppression of the non-correlated components in successive pulses reverberation[J].Applied Acoustics,2010,29(5):336-343.
Authors:CHEN Wen-jian  SUN Hui  ZHU Guang-ping and ZHANG Ming-hui
Affiliation:(Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001)
Abstract:The data of bottom target detection show that there are non-correlated components between successive pulses reverberation.Combined with the spectrum of reverberation,some influencing factors are analyzed.According to the law of large numbers,an integrated cancellation method for suppressing the non-correlated components is proposed.The results of lake experiment show that the non-correlated components are suppressed,and the uniform background of reverberation is usually conducive to target signal detection.
Keywords:Reverberation  Between successive pulses  Spectrogram  Correlation coefficient  Integrated cancellation
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