Correction for spurious phase via estimation of non-minimum phase wavelet
Deconvolution with minimum phase wavelet assumption usually leaves the data with spurious phase. The phase correction required to remove the spurious phase is done by a simple parameterization of the underlying mixed phase wavelet, which involves estimation of an all-pass operator coefficients via cumulant matching technique. The approach involves setting up a cost function with unknown shape and using a simulated annealing algorithm for optimization.
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Original data |
Phase corrected data |
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Original data. The inserted curve is the P-velocity log. |
Phase corrected data. The inserted curve is the P-velocity log.
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