A 1-D time-varying median filter for seismic random, spike-like noise elimination |

A simple definition of the SNR was introduced by Liu and Li (1997). Window , a part
of the seismic record, can be chosen for SNR analysis:

where is amplitude of signal, and is amplitude of noise. These assumptions generally imply a limitation to this method, but they can be satisfied if the local window is chosen in the stable signal region of the seismic section. So if the signal energy in the window is

the noise energy can be calculated by

Finally, a decibel expression of the SNR is estimated as

A 1-D time-varying median filter for seismic random, spike-like noise elimination |

2013-07-26