NONMINIMUM-PHASE WAVELET ESTIMATION USING POLYCEPTRA

In this paper we examine a novel procedure to estimate non-minimum pha se wavelets using the cepstrum of high-order cumulants. When the refle ctivity consists of a non-Gaussian process, the cepstrum of the wavele t can be computed from the cepstrum of a higher-order cumulant which i s estimated from the seismic trace. The technique provides an unifying thread between homomorphic system processing and the more recent cumu lant-based techniques. Synthetic and real data examples are used to il lustrate the applicability of the method for wavelet estimation.