Rapid recovery of precise position after temporary signal loss
US10422885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2016 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A real-time kinematic (RTK) filter uses the backup data to estimate a relative position vector between the mobile receiver at the first measurement time and the mobile receiver at the second measurement time and to provide recovery data associated with a satellite-differenced double-difference estimation for the mobile receiver between the first measurement time and the second measurement time. A navigation positioning estimator can apply the relative position vector, the backup data, the recovery data from the RTK filter, and received correction data with precise clock and orbit information on the satellite signals, as inputs, constraints, or both for convergence or resolution of wide-lane and narrow-lane ambiguities, and determination of a precise position, in accordance with a precise positioning algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.