Differential evolution algorithm-based CRS dip decomposition method
A differential evolution algorithm and population technology, applied in the field of oil and gas exploration seismic data processing, can solve the problems of image quality reduction, three-parameter test infinite coherence value is impractical, affect the stacking section effect, etc., and achieve the effect of improving the effect
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[0038] Example 1:
[0039] Such as figure 1 As shown, a CRS inclination decomposition method based on differential evolution algorithm is completed by discretizing the exit angle α, and the inclination angle is divided into several parts. For each part, the parameters with the highest similarity are obtained based on the differential evolution algorithm, and finally each Partially superimposed.
[0040] Before the inclination division process, in order to improve R in the search space NIP The lower limit of the minimum dynamic correction speed is required, and the lower limit is calculated by the minimum dynamic correction speed
[0041]
[0042] lb is expressed as the lower boundary, α min And α max Is the boundary of the angle range, v 0 Is the surface velocity, V min Is the dynamic correction speed. Similarly, the maximum dynamic correction speed can be used to calculate R NIP The upper limit of the CRS dynamic correction speed is obtained by using the CRS parameters of each t...
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