Tkachuk A. Piezoelectric gravimeter of automated aviation gravimetric system

The new piezoelectric gravimeter of automated aviation gravimetric system (AGS) is researched in the thesis, its constructive scheme is developed, its mathematical model is made, the basic errors sources of piezoelectric gravimeter are researched and the ways to reduce them are proposed. The patent of Ukraine for an invention is obtained. The problem of filtering the output piezoelectric gravimeter signal from the biggest of hindrances the vertical aircraft acceleration, by setting its own oscillation frequency equal to the frequency of crossing spectral densities of the desired signal gravitational acceleration and signal interference basic vertical aircraft acceleration is resolved. A digital computer simulation of the most dangerous resonant modes of the new piezoelectric gravimeter is done. The possibilities of using neural networks algorithms for the problems of development and operation of automated ACS with the new piezoelectric gravimeter in order to reduce instrumental errors of gravimeter and other navigation elements are considered. An experimental setting in which the new piezoelectric gravimeter is researched are done. New piezoelectric gravimeter significantly increases accuracy of measurements the gravity (1 mGal) compared with known manual gravimeters (2-10 mGal) and performance in 10 times.