Apparatus for generating a heading signal for a land vehicle
US4734863A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1985 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus generating accurate data regarding the heading of a land vehicle as it travels over terrain having changing conditions. The apparatus includes a first sensor means, such as a differential odometer, generating data regarding the relative direction of the vehicle. Also included is a second sensor means, such as a flux gate compass, for generating data regarding the absolute direction of the vehicle relative to the earth. The relative directional data and the absolute directional data are combined in a means for generating accurate data regarding the heading of the vehicle. A means for reducing errors reflected in signals generated by the sensors is provided to insure the accuracy of the output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.