METHOD AND DEVICE FOR INCREASING FREQUENCY OF SEISMIC DIGITAL SIGNAL

摘要

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.

主权项

1. A frequency increasing processing method of a digital signal, comprising the steps of:
inputting, in step S101, a real signal trace collected in a certain period of time; performing Hilbert transform, in step S102, on the real signal trace, so as to obtain an instantaneous amplitude trace of the real signal trace; and performing frequency increasing and polarity transform processing on the real signal trace, in step S103, based on the instantaneous amplitude trace, so as to obtain a frequency increasing signal trace.