Re-ordered interpolation and convolution for faster staggered-grid processing
US9928315B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2014 |
| Grant date | Mar 27, 2018 |
| Priority date | — |
| Expiry date | Jun 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/673
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improved finite-difference staggered grid wave propagation systems and methods. One illustrative computer-based wave field simulation method includes: applying at least one signal to a grid of model cells forming a model space, each model cell having stress values associated with stress nodes and velocity values associated with velocity nodes staggered from the stress nodes; and propagating the at least one signal as a wave into the model space by alternately updating the stress values and the velocity values to obtain a time-dependent wave field associated with the at least one signal. The stress value updating includes, for each model cell: determining spatial derivatives of the velocity values for the model cell; interpolating the spatial derivatives to multiple stress nodes within the model cell; and, for each stress node within the model cell, combining the spatial derivatives associated with that stress node to update at least one stress value associated with that stress node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.