Seismic system and method
US4777628A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04D99/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The apparatus of the present invention includes a group of at least three seismic detectors. Each seismic detector detects vibrations and provides a seismic signal in accordance with the sensed vibration. A multiplexer multiplexes the seismic signals to provide a multiplexed signal. The multiplexed signal is amplified and converted to digital signals. A memory stores the digital signals according to the detector of origin so that the stored digital signals for a detector are in effect a sample of the seismic signals from the detector. A microprocessor connected to the memory means derives a statistical reference from the stored samples. Samples that are outlying with respect to the statistical reference are discarded. The remaining samples are then combined in a predetermined manner to provide an enhanced seismic signal from the group of detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.