Adaptive Processing of Seismic Signals in Noisenfor Improved Time of Arrival and Amplitude Estimates

摘要

An adaptive prediction error filter and an adaptive notch filter are used to process a class of seismic signals in noise. These signals are observed in geophones after inducing seismic disturbances into the earth near an in situ combustion process for the purpose of determining the effect of the process upon the signal parameters. The adaptive processing provides signal to noise ratio enhancement such that signal amplitude and time of arrival estimates are more easily determined. In addition, one may use the prediction error squared in order to estimate signal arrival time.