System and method for magnetometer monitoring
US10976380B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Mar 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C23/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining a heading of a vehicle is disclosed. The system includes a magnetometer configured to generate a magnetic heading output signal, and one or more rate gyros configured to generate a gyro angular rate output signal. The system may further include a controller configured to determine a magnetometer heading rate based on the magnetic heading output signal and a gyro heading rate based on the gyro angular rate output signal. The controller may calculate a difference value between the magnetometer heading rate and the gyro heading rate. If the difference value is above a difference threshold value, the controller may calculate an integration value between the magnetometer heading rate and the gyro heading rate, report a positive magnetometer error state if the integration value is above an integration threshold value, and report a negative magnetometer error state if the integration value is below the integration threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.