Underground exploration apparatus, system and method
US7034539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Nov 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/043
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The object of the present invention is to realize a low-invasive underground exploration apparatus, system, and method which are capable of specifying the kind, three-dimensional position, and amount of a substance present in the ground. The underground exploration apparatus, system, and method includes: measuring, at multiple points, a high frequency voltage that appears upon conduction of high frequency current through the ground to obtain measurement results at two or more frequency levels; employing an ground model using the finite element method, the boundary element method, an impedance network, or the like to estimate a substance in the ground by changing unknown quantities of the ground model such as local dielectric constant and electric conductivity so as to make an error between the actual measured value and the calculated value smaller; and displaying input information of the ground model and results of the estimation processing two-dimensionally or three-dimensionally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.