METHOD AND SYSTEM OF 2-AXIS COMPASS CALIBRATION CONSIDERING MAGNETIC ENVIRONMENT AND METHOD AND SYSTEM OF MEASURING AZIMUTH USING IT

摘要

A compass sensor calibration method and device considering magnetic environment, and an azimuth measuring method and device using the same are provided to find calibration quality and surrounding magnetic interference by employing a calibration quality degree and a distortion factor. A compass sensor calibration method considering magnetic environment comprises the steps of: obtaining magnetic force data by a compass sensor formed of a two-axis magnetic force meter while turning the compass sensor by 360 degrees(S100); fitting a shape generated by the obtained data to an elliptic function(S120); converting the obtained data and the fitted elliptic function into a circular type(S130); and calculating a distortion factor indicating a distorted degree of a magnetic field by using an inclined angle of the major axis of the elliptic function or the obtained data with respect to a horizontal axis(S150).