Method and apparatus for measuring relative heading changes in a vehicular onboard navigation system
US4788645A · kind A · utility
62Cited by
10References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1986 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Mar 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0272
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring relative heading changes in a vehicular onboard navigation system is provided comprising apparatus for providing signals corresponding to differential wheel distance measurements, the velocity and wheel tracking distance of the vehicle. When front wheel distance measurements are used in a vehicle having an Ackerman-type steering system, an apparatus for providing a signal corresponding to an effective front wheel tracking distance as a function of the curvature of turn is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.