CAJ | 학술논문

经验模态分解（empirical mode decomposition ，EMD）方法不能解决探地雷达信号的混频现象，文章提出了探地雷达信号时域集合经验模分解（ensemble empirical mode decomposition ，EEMD）分析方法。通过分析可知，EEMD方法可以克服EMD方法的模态混频现象。文中由时域有限差分（finite difference time do‐main ，FDTD）方法正演出探地雷达模型的信号，利用EEMD方法分离探地雷达特征模量，并对不同的特征模量进行分析，将受到白噪声干扰的探地雷达正演信号通过EEMD方法去噪，结果表明去除干扰效果显著。
경험모태분해（empirical mode decomposition ，EMD）방법불능해결탐지뢰체신호적혼빈현상，문장제출료탐지뢰체신호시역집합경험모분해（ensemble empirical mode decomposition ，EEMD）분석방법。통과분석가지，EEMD방법가이극복EMD방법적모태혼빈현상。문중유시역유한차분（finite difference time do‐main ，FDTD）방법정연출탐지뢰체모형적신호，이용EEMD방법분리탐지뢰체특정모량，병대불동적특정모량진행분석，장수도백조성간우적탐지뢰체정연신호통과EEMD방법거조，결과표명거제간우효과현저。
Empirical mode decomposition (EMD ) method can not effectively solve the phenomenon of ground penetrating radar (GPR) frequency mixing .In this paper ,the method of ensemble empirical mode decomposi‐tion(EEMD) analysis of GPR signal in the time domain is proposed .The result shows that the EEMD method can overcome the modal frequency mixing of the EMD method .The finite difference time domain (FDTD) methods are performed to simulate the signal of GPR model .Then the GPR intrinsic modulus is isolated by u‐sing the EEMD method from forward signal and different intrinsic modal features are analyzed .Furthermore , the EEMD method is used to remove the noise from the GPR signal with white noise .The experimental re‐sults verify the effectiveness of interference removal .