Virtual sensor and compass calibration

US11585658B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Tobias Gurdan · Germering, DE
• Daniel Gurdan · Deutsch, DE

Key dates

• Filing date: Jun 28, 2019
• Grant date: Feb 21, 2023
• Expiry date: Oct 1, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/0206
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An unmanned aerial vehicle includes one or more magnetometers, configured to detect a magnetic field and to output magnetometer data corresponding to a magnitude of the detected magnetic field; a position sensor, configured to detect a position of the unmanned aerial vehicle relative to one or more reference points, and to output position sensor data representing the detected position; one or more processors, configured to control the unmanned aerial vehicle to rotate about its z-axis; receive magnetometer data comprising a plurality of z-axis directional measurements taken during the rotation about the z-axis; receive position sensor data and determine from at least the position sensor data a magnetic field inclination of the detected position; and determine a z-axis magnetometer correction value as a difference between the received magnetometer data for the z-axis and the determined magnetic field inclination.