Method for navigating a carrier device using a Kalman filter estimating a navigation state of the carrier device
US12189044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Oct 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0294
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for navigating a carrier using a Kalman filter estimating a navigation state of a carrier, comprising: obtaining, from a signal transmitted by the satellite and subsequently received by the carrier, a delta range measured between the carrier and a satellite and another measured kinematic datum which is associated with the satellite, generating, from position data for the carrier and the satellite in the navigation state, an estimated delta range between the carrier and the satellite, calculating, using the delta ranges, a delta range innovation associated with the satellite, carrying out a test on the delta range innovation, the test result indicating whether or not the signal was a multi-path signal, using, by means of the filter, the kinematic datum as an observation to update the navigation state provided that the test result indicates that the signal was not a multi-path signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.