A procedure of experimental estimation of statistical characteristics of information signals sources allowing to carry out the internal autonomous of characteristics of devices without using comparisons and other external operation is presented.

This research proves the strategy of how to increase the efficiency of centerless measurement of roundness of details on the basis of the new mathematical model minimizing the systematic error is considered. The authors of the article also present here the modeling and measurements results confirming the efficiency of offered.

Is motivated the choice of the boundary conditions for the marginal task of the electric field fluctuations calculation for atmospheric discharge glow. In the region of heights ≥ 70 km is calculated spectral brightness of the processes.

А mathematical model of errors of measurement of temperature conductivity and heat conductivity for heat insulating materials with use of of heat conductivity theory and metrology, has been developed. The procedure of selection of optimal heat pulse duration, experimental data processing conditions, basic structure size of measuring instrument, - has been created.

A method for the measurement of energy input in the pulsed gas discharges in short gaps, based on the measurement of active voltage at the low-inductance part of discharge circuit with two electrode gaps in a triple-gap gas-discharge aerosol generator has been developed. It was shown that the efficiency of energy input in the discharge gaps increases with the number of serially connected gaps.

A method for measuring the dielectric properties of strongly absorbing substances by the reflection from them of incident electromagnetic radiation, is proposed. It is based on application in measuring circuit of the quarter-wave nonabsorbing dielectric plate located on an adjustable distance from the measured material surface.