METHOD OF DETERMINING AND COMPENSATING FOR DEVIATION OF MAGNETOMETRIC SENSORS AND APPARATUS THEREFOR Russian patent published in 2015 - IPC G01C21/08 G01C25/00 

FIELD: physics.

SUBSTANCE: invention can be used on aircraft for determining deviation coefficients which describe changes in geomagnetic field strength caused by aircraft directly in flight, and compensating for said changes when calculating the magnetic heading ψm. The method is based on finding Poisson ratios, measuring the magnetic field component of the object and processing the measurement results. The measured magnetic field components are the projections of the longitudinal, transverse and normal components of the resultant magnetic field vector on structural axes of the aircraft during manoeuvre of the aircraft in flight. Measurements and processing of measurement results are performed multiple times using an iteration method, wherein processing of measurement results is performed by determining the magnitudes of the resultant geomagnetic fields, generating a sensitivity functions and automatic determination, based on said functions, of increments in magnetic deviation of magnetometric sensors. The apparatus for implementing the method comprises a three-component magnetometric sensor 1, a magnetic heading computer 2, an unit 3 for estimating the magnitude of the geomagnetic field, an unit 4 for generating sensitivity functions and an unit 5 for determining the incremental vector of magnetic deviation coefficients.

EFFECT: easy determination and compensation for deviation coefficients, faster preparation of aircraft for take-off, automatic determination of coefficients and compensation thereof at each take-off.

2 cl, 1 dwg