Analysis of the Earth electromagnetic signals
Yao Xue-dan · Progress in geophysics · 2004
This paper gives out the power spectral character of the Earth Signals by Time series analysis, compared ome conventional measures'effects in this field.Meanwhile, wavelets transformation is applied to separate the wrong channel whose frequencies have been contaminated by noises.Lastly, we will desigh some special programs to filter the noises out, cut signals into some short segments,and classify them again according to their energy power.