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《Oil Geophysical Prospecting》 1989-05
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A new least-squares deconvolution method for unknown finite length mixed-phase pulse

Huang Xiaojing Chen Hongbin  
Conventional least-squares deconvolution technique is valid only when the conditions of both minimum-phase wavelet and a white re- flectivity series are satisfied;but it is invalid in the case of unknown mixed-phase pulse.A new least-squares deconvolution method suitable for unknown finite duration mixed-phase pulse is proposed here.The predicted duration of a mixed-phase wavelet must be offered before the method is used.The tests of synthetic data show that this method bri- ngs good result and is insensitive to the predicted wavelet duration. It is also proved that the least-squares deconvolution method for un- known mixed-phase pulse is equivalent to gapped smoothing error filter- ing,which can be decomposed into a forward multi-step prediction error filtering and a backward multi-step prediction error filtering.It can be foreseen that this new deconvolution technique will finds its practical applications in seismic data processing.
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