The invention, which belongs to the aeromagnetic measurement field, provides an aeromagnetic interference compensation method. In the prior art, no geomagnetic filed
processing method is provided during aeromagnetic interference compensation coefficient calculation according to the existing aeromagnetic interference compensation method, so that the estimated aeromagnetic interference compensation coefficient is not accurate. However, with the provided method, the technical problem can be solved. The method comprises: a geomagnetic field item and an
induction field item in
airplane magnetic interference are combined; a
linear system of equations is established; before
estimation of an aeromagnetic interference compensation coefficient, band-pass filtering is carried out on a general field
column vector and a direction cosine matrix of the
linear system of equations; an unknown aeromagnetic interference compensation coefficient in the
linear system of equations after filtering is estimated; and during practical geomagnetic measurement, the magnetic interference generated by the
airplane is calculated and removed in real time by using the estimated coefficient. With the method, the geomagnetic field component in the measured
signal can be processed effectively, so that the
estimation precision of the aeromagnetic interference compensation coefficient is improved and thus the precision of the aeromagnetic interference compensation result is enhanced.