VERFAHREN ZUR SCHÄTZUNG DER BEWEGUNG EINES SICH IN EINEM MAGNETFELD BEWEGENDEN OBJEKTS

摘要

The present invention concerns a method for estimating the movement of an object (1) moving in an ambient magnetic field, the method being characterised in that it comprises the steps of: (a) acquiring: - by magnetic measurement means (20) rigidly attached to said object (1), at least one component of the magnetic field and/or an i-th derivative of the magnetic field; - by non-magnetic measurement means (24) rigidly attached to said object (1), at least one piece of information representative of the movement of the object (1); (b) evaluating the stationery or otherwise character of the magnetic field at the magnetic measurement means (20); (c) estimating, by the data processing means (21, 31, 41), at least one component of the movement of said object (1) by using, - at least one non-magnetic equation linking said component of the movement of said object (1) and at least one piece of acquired information representative of the movement of the object (1); - depending on the result of said evaluation of the stationary or otherwise character of the magnetic field, at least one magnetic equation linking said component of the movement of said object (1) and the at least one acquired component of the magnetic field and/or an i-th derivative of the magnetic field.