LEO-based positioning system for indoor and stand-alone navigation
US7489926B2 · kind B2 · utility
37Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Oct 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/423
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating a precise position of a user device from signals from a low earth orbit (LEO) satellite includes receiving at least one carrier signal at a user device, each carrier signal being transmitted a distinct LEO satellite. The user device processes the carrier signals to obtain a first carrier phase information. The user device recalls an inertial position fix derived at an inertial reference unit. The user device derives a position of the user device based on the inertial position fix and the first carrier phase information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.