GRADIOMETER Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: invention is meant for measurement with the aid of one of sensors of homogeneous magnetic field directed along collinear axes of sensors and its compensation in another sensor, for isolation and compensation of false signal of difference of vectors of magnetic induction oriented along collinear axes of both sensors which ensures exclusion of influence of homogeneous magnetic field oriented along above-mentioned axes on result of measurement of gradient of magnetic induction. Measurement of components of vectors of magnetic induction along two mutually orthogonal axes of two sensors with the aid of these sensors provides for compensation of false signal of difference of vectors of magnetic induction caused by noncollinearity of two other axes of these sensors in case of existence of homogeneous magnetic field oriented perpendicular to axis collinearly to which two axes of sensors should be oriented. As result of this influence of this homogeneous magnetic field on measurement result is excluded. EFFECT: enhanced accuracy of measurement. 2 dwg