CALIBRATION METHOD OF THE MAGNETOMETER ERROR USING A LINE OF SIGHT VECTOR AND THE INTEGRATED NAVIGATION SYSTEM USING THE SAME

摘要

PURPOSE: A calibration method of the magnetometer error using a line of sight vector is provided to presume and to correct the magnetometer error by compositing an extended kalman filter, thereby using the calibration method for intergrated navigation system which needs accurate navigation. CONSTITUTION: A calibration method of the magnetometer error using a line of sight vector comprises: a step of correcting deviation generated from a magnetic sensor; a step of presuming the azimuth of body by using a line sight vector; and a step of compensating the magnetometer error through an extended kalman filter. The azimuth presuming step additionally comprises a step of measuring present location of a body by using a GPS.