Method for determining a confidence indicator relating to the trajectory followed by a moving object
US9588227B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 10, 2013 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Jan 9, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method includes estimating the position of the moving object on the basis of the reception of navigation signals emitted by a constellation of satellites, the navigation signals being modulated by a code and the receiver comprising a local replica of the code. The determination of the confidence indicator consists in estimating a speed of displacement of the receiver over an identified trajectory segment, deducing therefrom a Doppler delay function corresponding to the motion of the receiver, in correcting the auto-correlation function of the GNSS navigation signal received from each satellite of the constellation by means of the delay function, in comparing the corrected auto-correlation function with a theoretical auto-correlation function by applying a quadratic criterion corresponding to the confidence indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.