Gravity inversion method and system based on meshfree method
US11815647B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2022 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Apr 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gravity inversion method and system based on a meshfree method. The method includes: selecting an appropriate method of constructing an approximate function, and forming a hybrid radial basis function; using an appropriate evaluation method to select suitable parameters of the hybrid radial basis function; selecting a construction form of an equation; and weighting a distance norm of the hybrid radial basis function on the basis of the tendency and morphology of an ore body in the prior information; loading known underground density information and constructing an equation set; solving the equation set, and using a coefficient matrix created with an acquired coefficient vector in combination with a global background grid to obtain a global estimated density distribution; loading observation data and performing inversion by using a preconditioned conjugate gradient method (PCGM) with the estimated density distribution as a constraint; and obtaining an underground density distribution and completing the inversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.