An instrumental error estimation of the capacitive displacement sensor has been carried out. The error analytical expressions have been derived, the modeling has been executed and the recommendations for the accuracy improvement have been made.
One of the plausible circuit engineering solutions for the capacitive accelerometers with the differential type sensing element has been considered. The test results of the prototype on a specialized stand have been presented.
The problem of the light refraction at the object border in optical tomography has been investigated. The modified method of rho-filtration with an auxiliary weight function has been proposed.