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Methods for improved heading estimation

  • US 10,393,542 B2
  • Filed: 07/11/2017
  • Issued: 08/27/2019
  • Est. Priority Date: 06/12/2012
  • Status: Active Grant
First Claim
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1. A computer implemented method, comprising:

  • receiving sensor data from a tracked computing device, the sensor data including magnetic data from a magnetic sensor and gyro data from a gyro sensor;

    determining a magnetic heading based on the magnetic data and a gyro heading based on the gyro data;

    determining path data for the tracked device comprising a plurality of tracking points based, at least, on the magnetic heading, the gyro heading, and a navigation parameter, the navigation parameter accounting for sensor calibration error in the magnetic sensor and the gyro sensor;

    calculating a constraint for the navigation parameter; and

    optimizing the path data by applying the constraint to the navigation parameter; and

    updating the path data based on the optimization.

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