A new technique for picking the first S-Wave arrival is presented by multiplying energy ratio of the long window to the short window by the square of the amplitudeenvelope of waveforms in the paper.
提出了利用波形长短时窗能量比值与波形信号能量包络的平方乘积检测横波初至的新方法。
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This method not only can achieve the distortionless envelope detection of voltage flicker, but also can detect the time, frequency and amplitude of the signal accurately.