Methods for deconvolution of unknown source signatures from unkn

Details Methods for deconvolution of unknown source signatures from unkn Methods for deconvolution of unknown source signatures from unkn

1989-06-01

1990-05-01

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 38, 367 52, 367 57, 367 58, G01V 136

Patent

active

049223623

ABSTRACT:
A method for the determination and deconvolution of the signature of an unknown, non-impulsive source signal. The method supposes that that an array of receivers is positioned at the earth's surface to detect and record the seismic signals resulting from the interaction of the source with the earth's subsurface. The traces of data recorded are time-shifted by an amount determined by a coherency analysis of the data. The signal is estimated from the time-shifted data with a weighting factor applied at each trace. A deconvolution filter is determined from the estimate and is weighted at each frequency according to the strength of the source at that frequency. The filter is then applied to the time-shifted data.

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