Calibration method for a triaxial sensor with selection of a calibration method as a function of the spatial distribution of measurements
US10838034B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2019 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | May 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of calibrating a triaxial sensor such as a magnetometer. The method includes steps (DIS) to calculate a spatial distribution indicator of a set of measurements output by the sensor, and to determine (AJS), using a fitting method, parameters of a parametric surface that can be used to fit said surface to the set of measurements. The fitting method is selected from among several predetermined fitting methods as a function of the spatial distribution indicator. The predetermined fitting methods may include an ellipsoid fitting method, a sphere fitting method, a sphere fitting method and a two-step fitting method consisting of a first fitting to a sphere followed by a second fitting to an ellipsoid, the centre of which is coincident with the centre of the sphere of the first fitting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.