Computationally efficient weighting and vertical stacking methods and apparatus for improving signal-to-noise ratio of seismic data
US4561074A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1982 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Dec 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/322
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This disclosure relates to improved methods and apparatus for vertically stacking seismic-trace data collected by a digital field recorder during seismic prospecting utilizing plural initiations of a low energy surface seismic source. Seismic-trace data generated by consecutive seismic source initiations and acquired at a common detector location is weighted and summed together, and the sum is normalized prior to being recorded. Accordingly, the signal-to-noise ratio of the seismic-trace data is improved. The methods and apparatus by which the weighting values are calculated and applied provides computational simplifications which reduce the program storage requirements and increase the computation speed of the microcomputer circuit preferably used to perform the calculations and leads to savings in hardware power, size, and complexity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.