Method and apparatus for determining blaster detonation time and first arrival time of seismic wave
US6704657B2 · kind B2 · utility
3Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention comprises an apparatus and a method for measuring the first arrival time of seismic waves from detonation in seismic explorations, comprising a or several detectors for measuring seismic waves and converting them into electrical signals and a signal processing means for calculating an average energy of the electrical signals to determine the first arrival time of seismic waves and using a smooth filtering method to compute accurately the first arrival time backwards from the first maximum valve in the average energy curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.