Imaging objects in a dissipative medium by nearfield electromagnetic holography
US6084412A · kind A · utility
14Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1997 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Mar 24, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A unique time-domain electromagnetic system and data processing technique which, using low frequency electromagnetic fields, can localize, in three-dimensions, the position of buried metallic objects is disclosed. The measurement system uses time-domain electromagnetic techniques on a scanning frame similar to a X-Y plotter. The system collects magnetic data over a large area above the buried object. The spatial information of the field detected on the ground is then processed with an unique `nearfield holographic` data processing method to reconstruct the field image of the buried object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.