Vehicular traveling direction measuring system
US6049761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1993 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Feb 5, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C17/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vehicular traveling direction measuring system derives a weighting constant based on a monitored magnitude of the geomagnetic disturbance around a vehicle. Variance values of geomagnetism indicative data and a deviation magnitude from a standard azimuth circle may be used to estimate the geomagnetic disturbance magnitude. Mean data is derived from current cycle data and prior cycle data of the monitored geomagnetism using the weighting constant. The weighting constant determines a rate of dependency upon the current cycle data and the prior cycle data when deriving the mean data. The vehicular traveling direction is derived based on the derived mean data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.