Portable optical gyroscope and compass unit
US12013241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2023 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Oct 12, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/49
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to integration of integrated photonics-based optical gyroscopes and fiber-based optical gyroscopes into portable apparatuses that may include compass features. Novel small-footprint modularized fully integrated photonics optical gyroscopes are used for non-critical axes. However, for at least one critical axis, a fiber-optic gyroscope can be used to provide bias stability below 0.1°/Hr, which is directly correlated to predicting positional accuracy in the centimeter range. The positional accuracy results from the compassing ability of the gyroscope (referred to as gyrocompass) to calculate direction of heading using the earth's rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.