Gravity gradiometer
US7627954B2 · kind B2 · utility
7Cited by
44References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2007 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Nov 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V7/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gradiometer is disclosed which has a pair of sensor bars 41, 43 supported in housings 45, 47. Transducers 71 are located adjacent the bars 41, 43 to detect movement of the bars in response to the gravity gradient tensor. At least one of the transducers 71 comprises a first coil 510 and a second coil 516 arranged in parallel and a switch 362 for proportioning current between the coils 510 and 516 so as to create a virtual coil at a position D between the coils 510 and 516.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.