Enhanced sonde recognition
US7310584B2 · kind B2 · utility
45Cited by
4References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector for locating a sonde includes a plurality of antennas, an analogue to digital converter 11 and a digital signal processor to isolate the magnetic signal produced by the sonde. The digital signal processor includes a phase feedback loop 21 to allow the digital processing unit to follow variations in the frequency of oscillation of the magnetic signal produced by the sonde.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.