Method of checking the integrity of the estimation of the position of a mobile carrier in a satellite-based positioning measurement system
US11022694B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Oct 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of checking the integrity of the estimation of the position of a mobile carrier are provided, the position being established by a satellite-based positioning measurement system, the estimation being obtained by the so-called “real time kinematic” procedures. The method verifies that the carrier phase measurement is consistent with the code pseudo-distance measurement. The method comprises a step of calculating the velocity of the carrier, at each observation instant, a step of verifying that at each of the observation instants, the short-term evolution of the carrier phase of the signals received on each of the satellite sight axes is consistent with the calculated velocity and a step of verifying that at each of the observation instants, the filtered position obtained on the basis of the long-term filtered measurements of pseudo-distance through the carrier phase is dependable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.