黄金科学技术 ›› 2024, Vol. 32 ›› Issue (1): 82-90.doi: 10.11872/j.issn.1005-2518.2024.01.088
Shuhong DAI1(),Zhanjun ZHANG1(),Kai LIU2,Hao ZHENG1,Qinglin SUN1
摘要:
为了去除露天矿山爆破振动信号中混入的噪声成分,提出了一种基于PEMD-MPE算法的降噪方法。该算法通过自适应性正交经验模态分解(PEMD)得到完全正交的本征模态函数(IMF)分量,然后对各个IMF分量进行多尺度排列熵(MPE)的随机性检测,成功确定其中的噪声分量并将其去除。采用该算法对实测的露天矿山爆破振动信号进行降噪处理。结果表明:相比EMD-MPE和EEMD-MPE算法,PEMD-MPE算法的信噪比分别提高了3.520 dB和1.107 dB,且重构标准差和均方根误差最小,说明该算法不仅能够有效去除爆破振动信号中的噪声成分,还能有效保留真实信号。
中图分类号:
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