METHOD FOR MEASURING THE SEMI-AXES OF THE FULL POLARIZATION ELLIPSE OF THE MAGNETIC FIELD AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC G01V3/10 

FIELD: measuring technology.

SUBSTANCE: inventions relate to measurements of semi-axes of a full polarization ellipse of a magnetic field and can be used in geophysical studies of the upper part of the earth's crust, when searching for objects of increased conductivity in the earth by air and ground methods of induction frequency sounding and dipole electromagnetic profiling. The amplitudes of the three components of the magnetic field and the phase values ​​of the field components are measured relative to the phase of the reference signal generator. In this case, arbitrarily oriented mutually perpendicular magnetic field sensors are used. According to the measured values, the values ​​of the semiaxes of the polarization ellipse are numerically determined. The measuring device consists of three or two identical measuring channels. Each channel includes an alternating magnetic field sensor, a preamplifier, a bandpass filter, an amplitude meter, a phase meter, an analog-to-digital converter common to all channels, and a reference signal generator common to the phase meters of all channels. In a two-channel device, the sensor system has the ability to rotate one of the sensors at an angle of 90° around an axis directed along the other sensor.

EFFECT: increasing the accuracy, reliability and reproducibility of the survey results, increasing the productivity and information content of the primary survey material.

3 cl, 3 dwg