Magnetometer arrays for inertial navigation, mapping, and drift compensation
US10168159B2 · kind B2 · utility
1Cited by
3References
20Claims
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Key dates
| Filing date | Sep 24, 2015 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Mar 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Examples of arrays of magnetometers that can be used as or as part of an inertial measurement unit (IMU) are disclosed herein. Various methods for using such arrays in order to obtain highly precise and locationally unique data, which can be used to correct for drift effects, are also disclosed. In certain embodiments, the Jacobian matrix of the magnetic field is computed from the magnetometer measurements. This Jacobian matrix data can be used to generate a magnetic field map for a particular environment and/or to locate position, velocity, and acceleration of the IMU by referencing such a magnetic field map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.