基于HHT的地震信号自动去噪算法

被引:11
作者
杨光亮 [1 ,2 ]
朱元清 [3 ]
于海英 [3 ]
机构
[1] 中国地震局地震研究所
[2] 地壳运动与地球观测实验室
[3] 上海市地震局
关键词
希尔伯特-黄变换; 经验模态分解; STA/LTA; 自动去噪; 地震信号;
D O I
10.14075/j.jgg.2010.03.030
中图分类号
P315.01 [数理地震学];
学科分类号
摘要
根据希尔伯特-黄模态分解的特点,结合STA/LTA算法自动识别信号模态与噪音模态,提出了基于HHT的模态分解-STA/LTA的地震信号自动去噪算法。该方法不需分析信号的频谱特征,可在时域自动实现信号的高通、低通、带通滤波。对江苏如东海Ms2.9、江苏盐城滨海Ms3.8、江苏句容Ms3.7等地震信号作自动去噪处理,证明了该方法的可行性。
引用
收藏
页码:39 / 42
页数:4
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