METHOD AND DEVICE FOR SIMULTANEOUS IDENTIFICATION AND CORRECTION OF ERRORS DUE TO MAGNETIC DISTURBANCES AND POOR ALIGNMENTS IN MEASUREMENTS OF A MAGNETOMETER

摘要

The present invention relates to a method and a device (1) for correcting measurement errors of a magnetometer (2) mounted on a vehicle (3). BR/ - According to the invention: . we define a theoretical correction model [A] .Hm + a.Hm '+ Hp = [M] .H, in which [A], a and H are elements to be determined, Hm is the measured field, Hm' the derivative with respect to the time of Hm, H the effective field and [M] a transformation matrix; BR/. we define a vector error E = [M] .H - ([A] .Hm + a.Hm '+ Hp); BR/. the square of the error thus defined is determined; and BR/. we identify the coefficients of the model that minimize the sum of the squares of the errors, for all the measurements made. / P