| 摘要 |
<P>PROBLEM TO BE SOLVED: To calibrate a magnetic compass so as to compensate hard iron disturbance in the magnetic field of the Earth due to a device and component integrated with the magnetic compass. <P>SOLUTION: A magnetic compass is provided that includes a magnetometer 122 for measuring a magnetic field and a processing unit 102 for calibrating the magnetic compass 120. The processing unit is configured to inspect a predetermined number of magnetic field samples and calculate calibration coefficient from the inspected magnetic field samples 252-1 to 252-8. Each inspected magnetic field sample is separated from every other inspected magnetic field sample by at least a minimum separation angle. <P>COPYRIGHT: (C)2012,JPO&INPIT |
