Within the framework of inertial navigation system correction problem the models of inertial, satellite and astroinformation studied are offered and studied. The results of computational experiments characterizing numerical stability and efficiency of the problem solution in conditions of the measurements ultimate accuracy are presented.

Offered the method for determination of linear systems parameter which are described by differential equations which variable coefficients. The method is based on solution of system of integral equations which kernels are unit impulse response function of system.

Two approaches to the interpretation ща results in comparisons of two measurement standards different by composition of a priori information and methodology of decisions based on comparison results are considered.

The method of refirement of measuring instrument (MI) transfer function in concrete measurements conditions which can be used for metrological autotracking in intellectual MI is considered.

A procedure for assessing the conformity with specified requirements described in terms of a tolerance interval for a quantity is considered in view of uncertainty of measurement of the quantity. It is shown that if the measurement result is considered as a Bayesian inference then the classical methods of the decision theory, including Bayesian ones should be properly modified. This is compared to the approach of ISO/IEC DGuide 98-4 (2012) which is being developed in order to promote the “Guide to the expression of uncertainty in measurement” (GUM) to the specific tasks of conformity assessment. It is demonstrated that that approach is actually in poor agreement with GUM.

The paper considers basic typical problems with which developers and experts conducting tests face frequently both at voluntary software validation and at testing for type approval. In particular problems of using different methods for software identification, problems of software update, problems of using software, that has passed validation abroad etc.

The preliminary proposals on composition of measurable information parameters, appearance and structure of these parameters measuring instruments and means of their metrological assurance are carried out.

The certified reference materials (CRM) based on Au nanoparticles and ZnO for small-angle X-ray diffractometers calibration are developed. The structure parameters of CRM have been measured by transmission electron microscope. The confirmation of the mean values of the nanoparticles size parameters and additional characterization of CRM is carried out by means of the several research methods, such as optical spectroscopy, X-ray phase analysis and synchrotron radiation.

The method of formation of reference values for calibration of instruments for spatial surfaces geometric parameters measurement is considered. The method based on creation virtual model of complex surface of real control sample through its digital identification with application of automatic checking machine mathematical tool. The results of control verification measurements gears working surfaces confirming the possibility and suitability of this method practical application is presented and analyzed.

The technical and metrological characteristics of the inductance converters with diameter of 8 mm the most common for linear measurements in different countries are considered. Some of their construction and metrological shortcomings to be considered at instruments operation are described. The proposals on construction of these converters change to improve their quality are given.

The losses in the trap detector due to absorption of diffusely scattered laser radiation on its walls are analyzed. The measurements results for the indicatrix of this radiation from the working surface of photodiodes Hamamatsu S6337 and S1337 are given. The approximate model of distribution of radiation in the trap detector, which takes into account the real profile of the indicatrix of scattering is constructed. The effect of acts of the diffuse scattering quantity and of the number of scattering reflections on the accuracy of the considered losses calculation is analyzed. The influence of polarization of the incident laser radiation on these losses value is investigated.

The method and structural scheme of the device intended for operational determination of the radiation wave length in the LED spectrum maximum and of the spectrum width by means of two photoreceivers with Gauss spectral characteristics are considered. The expression for a methodical error is formulated.

It is shown that of observance of certain conditions the Coriolis flow meters can reliably measure two-phase flows. The requirements to Coriolis flow meter design allowing to make possible the reliable measurement of two-phase flows are considered. The recommendations on the Coriolis flow meter installation at the two-phase flow measurement are given.

The features of flow rote and quantity of substance measurement using the expanding device as a flow converter in the circular cross section tube are considered.

The method of signal usage efficiency improvement in Doppler ground speed and drift angle measuring instrument, based on extraction of information about the flight height is suggested. The results of modeling are presented.

The measurements of thermodynamic temperature of high-temperature fixed points based on the metal-carbon eutectics of Co-C, Pt-С and Re-C by means of radiation thermometer in radiance mode were carried out. The instrument was calibrated by means of a high-temperature blackbody model and a filter radiometer with known spectral sensitivity in illuminance mode.

Quantization noise is investigated at the outputs of a modulator and a digital filter for delta-sigma analog-to-digital converter (ADC). Modeling and simulation were used for different laws of input signal change and several realizations of the digital filter.

It is shown that the magnetic modulation sensor with cores from amorphous ferromagnetic alloy and with compensated longitudinal magnetostriction in conditions of small external magnetic noises at frequencies higher than 1 Hz is capable to registrate the magnetic field with amplitude 0,3 pT.The density of magnetic noise at frequencies above 3 Hz does not exceed 0,2 pT·Hz^-1/2.

The indirect method of estimation “distraction” of spatial harmonics spectrum of high frequency field of magnetron slow-wave structure allowing to timely defect the occurrence of magnetron oscillatory system hidden flows of efficiency during manufacturing is suggested.