Method and system for determining the location of a vehicle
US7479922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jan 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A first location determining receiver determines a first location estimate of a vehicle. The first location determining receiver is associated with satellite beacons. A second location determining receiver determines a second location estimate of a vehicle. The second location determining receiver is exclusively associated with terrestrial beacons. A selector selects the first location estimate of the vehicle as a preferential location in accordance with an initialization scheme for the vehicle in a work area. A filtering module applies a first weight to a first location and a second weight to the second location to derive a weighted estimate as the preferential location upon satisfactory completion of the initialization scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.