Hybrid inertial measurement system and method using a light pulse cold atom interferometer
US11175139B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 23, 2018 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jul 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/165
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a hybrid inertial measurement system including a cold atom interferometric inertial sensor having a laser source generating a sequence of laser pulses towards a cold atom burst and a conventional inertial sensor attached to the inertial reference frame of the interferometric inertial sensor. The hybrid system includes a signal processing system suitable for receiving an inertial measurement signal from the conventional inertial sensor and for generating in real time a non-linear frequency modulation signal, the feedback loop electronic system being configured to modulate in real time the central optical frequency of the laser according to the modulation signal, such that the cold atom interferometric inertial sensor generates a first hybrid inertial measurement signal by atomic interferometry corrected for the relative movements of the inertial reference frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.