Determination of heading from the field measured by magnetic sensors
US11287259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2018 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jul 27, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for the determination of heading by magnetic sensors, in which a magnetic field is measured by magnetometers and using recursive processing calculating for a given sampling time. An estimation of a heading prediction which is a function of the heading is determined at the preceding sampling time. A resetting of the predicted heading is then estimated as a function of a magnetic heading determined from magnetometer measurements. During the resetting, the calculating estimates the amplitude of the resetting as a function of a model of the change in magnetic disturbances between two sampling times, and of an a priori estimation of the amplitude of the disturbances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.