System and method for determining a position of a vehicle
US7647177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Nov 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/876
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time estimator determines a first aggregate elapsed time between the transmission of the first transmission signal to a first beacon and receipt of a return signal, a second aggregate elapsed time between the transmission of the first transmission signal to a second beacon and receipt of a return signal, and a third aggregate elapsed time between the transmission of the first transmission signal to a third beacon and receipt of a return signal. A bias compensator compensates for bias delay associated with at least one of the first transmitter, the first beacon, the second beacon and the third beacon. A converter converts the first aggregate elapsed time, the second aggregate elapsed time, and the third aggregate elapsed time into position curves. A data processor estimates a position of the vehicle at a confluence or intersection of the position curves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.