计算机科学 ›› 2016, Vol. 43 ›› Issue (6): 102-105.doi: 10.11896/j.issn.1002-137X.2016.06.021
刘潇文,蒋磊,许华,陈熙
LIU Xiao-wen, JIANG Lei, XU Hua and CHEN Xi
摘要： 针对希尔伯特-黄变换在超宽带脉冲检测中检测性能受限于信噪比的问题,研究并分析了筛选终止条件以及小波包去噪方法,结合新终止条件,给出了希尔伯特-黄变换与小波包分析联合检测的新方法。采用新方法对噪声中的超宽带信号进行检测分析,并运用均方根误差公式对该方法的检测性能进行仿真比较。仿真图表明,新方法能较为准确地重构出淹没在强噪声下的脉冲,成功克服HHT变换在检测超宽带脉冲时受噪声强度影响较大的问题,从而改善强噪声环境下脉冲信号的检测效果。
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