Gyroscope system magnetic field error compensation
US8600691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Aug 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One embodiment of the invention includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a gyro cell that is sealed to enclose an alkali metal vapor, a first gyromagnetic isotope, and a second gyromagnetic isotope. A magnetic field generator configured to generate a magnetic field that is provided through the gyro cell to cause the first and the second gyromagnetic isotopes to precess. A magnetic field error controller configured to measure an error associated with a magnitude of the magnetic field and to generate an error signal that is fed back to the magnetic field generator to maintain the magnetic field at a desired magnitude. The system further includes a mechanization processor configured to calculate a rotation angle about a sensitive axis of the NMR gyroscope system based on a measured precession angle of at least one of the first and second gyromagnetic isotopes and the error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.