Timing alignment method for data acquired by monitoring units of borehole-surface micro-seismic monitoring system
US11719841B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 16, 2023 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Mar 16, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/65
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A timing alignment method for data acquired by monitoring units of a borehole-surface micro-seismic monitoring system includes acquiring two rock-burst waveform data segments with GPS timestamps; calculating a time difference and a number of sampling points between each pair of adjacent GPS timestamps; adding, on an equal-interval basis, a sampling time to a sampling point missing a timestamp between each pair of adjacent GPS timestamps; calculating average sampling frequencies of the two rock-burst waveform data segments, adding, on an equal-interval basis, a sampling time to a sampling point missing a timestamp except first and last GPS timestamps in each of the two data segments; obtaining sampling times of all sampling points, resampling the sampling times according to a uniform sampling frequency; calculating a rock-burst waveform data segment at a new sampling time with a linear interpolation formula, and aligning the sampling times of the two rock-burst waveform data segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.