Method of seismic exploration
US4042910A · kind A · utility
13Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Oct 9, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of suppressing noise trains that develop from harmonics of a vibrator-type sweep signal. It includes the step of generating a plurality of such sweep signals in series and with the phase of each succeeding sweep signal being shifted relative to the previous one by a predetermined phase angle which is a fraction of 2.pi.. The generated signals are separately recorded and transformed by inverse phase shifting before being added or stacked in a conventional manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.