METHOD AND DEVICE FOR INCREASING FREQUENCY OF SEISMIC DIGITAL SIGNAL
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United States of America Patent
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Aug 25, 2016
app pub date -
Sep 25, 2013
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Sep 25, 2013
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Abstract
A frequency increasing processing method of a digital signal includes the following steps: S101, inputting a real signal trace collected in a certain period of time; S102, performing Hilbert transform on the real signal trace so as to obtain an instantaneous amplitude trace of the real signal trace; S103, based on the instantaneous amplitude trace, performing frequency increasing and polarity transform processing on the real signal trace so as to obtain a frequency increasing signal trace. Thus, a weak signal source can be identified without a large number of strong events. This shows advantages of environmental protection and cost reduction in the field of shale gas hydraulic fracturing micro-seismic monitoring. In addition, the zero polarity transform and frequency increasing processing in the present invention are simple in steps and are highly universal.
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