Phase clock performance improvement for a system embedded with GNSS receiver
US11300688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Aug 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods of storing phase history, and enhancing and restoring phase accuracy for a embedded Global Navigation Satellite System (GNSS) receiver include storing a phase history of the GNSS receiver output; determining an expected value of phase of the GNSS receiver output based on the phase history; and, responsive to a degradation of the GNSS receiver output, adjusting the GNSS receiver output utilizing the expected value of phase. The systems and method can further include, responsive to degradation being a loss of the GNSS receiver output, utilizing a holdover output from a physical frequency reference and with a phase adjusted based on the expected value of phase, and, responsive to the variation, utilizing the phase history to re-generate the GNSS receiver output for performance enhancement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.