METHOD OF FILTERING VALUES OF PARAMETERS OF UNIT THROWS DURING MEASUREMENT IN OPTICAL CIRCUIT OF ABSOLUTE GRAVIMETERS Russian patent published in 2025 - IPC G01V7/14 

FIELD: measuring.

SUBSTANCE: invention relates to gravimetry and can be used to filter values of parameters of single throws during measurement in the optical system of absolute ballistic gravimeters. Displacement trajectory of the measuring beam reflected from the corner reflector during free fall of a body in a gravimeter is recorded using a measuring beam displacement trajectory recorder. Value of deviation of the measuring beam from the vertical is determined. Linear and quadratic components of the free fall displacement of the body are selected. Wherein, additionally, N single throws of free falling body are performed. Displacement parameters of the measuring beam are determined by determining the horizontal displacement of the body when the body falls in the gravimeter, which is associated with a lateral pulse, by picking up the linear component of the free fall displacement Rlin(T)n for each single throw of the freely falling body. Array of Rlin(T)n values with size N is composed. Parameter values of single throws of a freely falling body are filtered and the absolute value of gravity acceleration is recalculated. As a result, an array gi of absolute values of gravitational acceleration with size N-2 is obtained with its own mean-square error value. Value g of the absolute value of gravitational acceleration is selected from the array gi, for which the mean-square error is minimum.

EFFECT: reducing the error value of the acceleration of free fall of gravity, increasing the accuracy of determining the acceleration of free fall in the Earth's gravity field, reduced root-mean-square measurement error, reduced sensitivity to vibroseismic noise and external effects.

5 cl, 2 dwg