Method for navigating vehicles, particularly land vehicles
US4680715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | May 15, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation method for the navigation of a vehicle employing direction and longitudinal movement sensors. Signals from the sensors are fed to a position computer which determines the vehicle position relative to a coordinate grid system. When the vehicle reaches a position of known coordinates the position values which are determined from the sensor signals are corrected with reference to the known coordinates, and a Kalman filter is provided which effects an error estimate and subsequently a correction value determination from the error estimate which results in a significant increase in accuracy of the displayed navigation data. The particular advantage of the method is the use of uncomplicated sensors which are able, in connection with the Kalman filter, to obtain highly accurate vehicle position data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.