| 摘要 |
PURPOSE:To remove errors, by matching a specified shifting amount determined by magnetic anisotropy with the offset amount caused by magnetization, and performing correction. CONSTITUTION:In a vector locus 6, Xmax, Xmin, Ymax, and Ymin are obtained. Then, a point (X0, Y0) is obtained by expressions X0=1/2(Xmax+Xmin)+Xs and Y0=1/2(Ymax+Ymin)+Ys. Shifting is performed so that this point becomes the original point of XY coordinates, and correction is performed. In the expressions, the terms of 1/2(Xmax+Xmin) and 1/2(Ymax+Ymin) are the terms for correcting the offset caused by the magnetization of a vehicle body. Xs and Ys are the terms for correcting the error based on anisotropy of geomagnetism.
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