Abstract：This paper first presents the principle of seismic signal matching pursuit decomposition and the computation of high precision instantaneous spectra,then proposes a new method for wedge edge interpretation with its instantaneous spectral features in time-frequency domain by analyzing the time domain and frequency domain responses of the wedge edge.Actually,the delta fringe deposit thickness is not the same along different direction.In this situation,this paper introduces kernel principal component analysis method to integrate the effective information of pinch-out line contained in the original dominant instantaneous spectral components.Therefore,the whole face of pinch-out line can be fully recognized and the non-uniqueness in delta fringe interpretation is extremely reduced.
