METHOD AND APPARATUS FOR CORRECTING THE OUTPUT OF AN ONBOARD VEHICLE TERRESTRIAL MAGNETISM SENSOR

摘要

Method and apparatus for correcting the output of an onboard vehicle terrestrial magnetism sensor. An azimuth computation reference circle is obtained from the terrestrial magnetism sensor output, the circle in turn being used to correct the sensor output. When the reference circle is dislodged, the least square method is used to fine a true azimuth computation reference circle.