CALIBRATION METHOD OF A THREE-AXIS ELECTRONIC MAGNETIC COMPASS Russian patent published in 2023 - IPC G01C17/38 G01C17/02 

FIELD: geodesy, navigation, topography.

SUBSTANCE: invention relates to methods of calibration of an electronic magnetic compass (MC) to determine the azimuth of a given direction when solving problems of geodesy, navigation, topography, etc. Calibration consists of two stages, in the first of which the magnetic field receivers of the X and Y axes are installed on a plane and rotate the MC around the Z axis, measuring the signals M_xi, M_yi in four orthogonal positions. According to the measured signals, the static errors m_x, m_y and the ratio k_yx = k_y / k_x of the sensitivities k_y, k_x of the MC receivers along the X, Y axes are determined. At the second stage, the receivers of the X, Z axes are installed on the plane, the MC is rotated around the Y axis and, acting similarly, the static error m_z and the ratio are determined by the M_xi, M_zi signals sensitivities k_zx = k_z / k_x on the Z axis.

EFFECT: expanding the functionality and improving the accuracy of the MC during calibration.

1 cl, 2 dwg