基于VMD-LSTM对大地电磁信号进行噪声检测和预测重构

李博, 李长伟, 罗润林, 吕玉增, 王占

VMD-LSTM-based noise detection and predictive reconstruction for magnetotelluric signals

LI Bo, LI Chang-Wei, LUO Run-Lin, LU Yu-Zeng, WANG Zhan

图9 K=5时对测试信号VMD分解时间序列和频谱 a—IMF1时间序列; b—IMF1频谱;c—IMF2时间序列; d—IMF2频谱;e—IMF3时间序列; f—IMF3频谱;g—IMF4时间序列; h—IMF4频谱;i—IMF5时间序列; j—IMF5频谱

Fig.9 Time series graph and spectrogram of the VMD decomposition for the test signal with K=5 a—IMF1 time series graph; b—IMF1 spectrogram;c—IMF2 time series graph;d—IMF2 spectrogram;e—IMF3 time series graph;f—IMF3 spectrogram;g—IMF4 time series graph;h—IMF4 spectrogram;i—IMF5 time series graph; j—IMF5 spectrogram