Correction method and intelligent vehicle guidance system for a composite-navigation of a motor vehicle
US6002981A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A correction method is provided for a map-supported navigation system or for a navigation system, in which the position of a motor vehicle found by means of composite navigation is checked and corrected. To correct the fed back position, a range of error is initially established, whose magnitude is determined by the tolerances of the vehicle sensors of the measuring errors of a navigation system. Within this range of error, all paved roads are taken into consideration as a possible vehicle position. A main route on which the vehicle is travelling is selected for the most probable position of the motor vehicle. The other positions continue to be used as parallel routes. If plausibility considerations reveal that a parallel route has a greater probability for the vehicle position than the present main route, then the parallel route is defined as the new main route. With the aid of a hysteresis, the current (actual) vehicle position is prevented from continually jumping back and forth among several streets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.