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《OIL GEOPHYSICAL PROSPECTING》 2000-03
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Obtaining the high-resolution filter operator in wavelet domain.

Wang Xiwen,Northwest Geology Institute,Yanerwan Street,Chengguan District,Lanzhou City,Gansu Province, 73 0 0 2 0 ,China  
In ordinary seismic processing methods for resolution improvement, deconvo-lution operator has poor part characteristics, thus influencing the ope rator frequen-cy. In wavelet transform, wavelet function has very good part charact eristics. Fre-quency-division data processing in wavelet transform also brings quite good high resolution data, but it needs more time than deconvolution method does. On the basis of frequency-division processing method in wavelet domain, a new technique is put forward, which involves 1) designing filter operators equivalent to deconvolution operator in time and frequency domains in wavelet transform, 2) obtaining derivative wavelet function that is suitable to high-resolution seismic data processing, and 3) processing high resolution seismic data by deconvolution method in time domain. Real application result proves that this is a fast wavelet frequency-division processing technique, and it is correct in theory and feasible in real application.
【CateGory Index】: P631.4
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