Google llc (20250116732). CALIBRATION QUALITY CONTROL USING MULTIPLE MAGNETOMETERS
CALIBRATION QUALITY CONTROL USING MULTIPLE MAGNETOMETERS
Organization Name
Inventor(s)
Shandor Glenn Dektor of Sunnyvale CA US
Martin Johannes Kraemer of Mountain View CA US
Mark Fralick of San Diego CA US
CALIBRATION QUALITY CONTROL USING MULTIPLE MAGNETOMETERS
This abstract first appeared for US patent application 20250116732 titled 'CALIBRATION QUALITY CONTROL USING MULTIPLE MAGNETOMETERS
Original Abstract Submitted
methods, systems, and apparatus, for calibration quality control using multiple magnetometers. one of the methods includes: receiving measurements by two or more magnetic field sensors of a device over a period of time, wherein each measurement measures a magnetic field at each magnetic field sensor, wherein each measurement at each time point over the period of time includes a vector in one or more spatial axes of a three-dimensional space; computing a difference between the measurements over the period of time, wherein the difference at each time point over the period of time is a result of computing a difference based on one or more pairs of the vectors at the time point; determining that the difference does not remain within a predetermined range over the period of time; and in response, classifying calibration quality of the device as unsuitable for computing a heading of the device.