Methods for deconvolution of unknown source signatures from unknown waveform data
US4922362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jun 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/366
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.