METHOD FOR MEASURING PARAMETERS OF THE EARTH'S GRAVITATIONAL FIELD USING OPTICAL FIBER COILS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC G01V7/04 

FIELD: measuring technology.

SUBSTANCE: invention relates to measuring technology for measuring the parameters of the Earth's gravitational field (EGF), the difference in gravitational potentials and the difference in orthometric heights. A method for measuring gravitational field parameters involves measuring the difference in gravitational phase delays of two optical beams in two optical fibre coils spaced apart in height. Two fibre-optic communication lines are used, with thermostated optical fibre coils. For measurements, both fibre-optic lines are laid between the measurement points, the first fibre coil and laser are placed at the first measurement point, the second coil and photodetector are placed at the second measurement point, laser radiation is applied to both fibre-optic lines, the difference in optical paths is calibrated and minimized, and the influence of the gyroscopic effect in the optical fibre coils is minimized, placing the fibre winding axes in both reels along the “east-west” line. The phase difference of light waves is recorded on the photodetector and the difference in orthometric heights and the difference in gravitational potentials between the placement points of the optical fibre coils are calculated.

EFFECT: increasing the accuracy and efficiency of measurements.

2 cl, 6 dwg