We described the problem of time intervals measurements when transfer the signal from reference frequency standard. The technique of correlation measurements is described. We suggested and described the time intervals measurement method based on a technique of search and elimination of errors associated with the processing of large volumes of information in the process of data acquisition.
The problem of measuring temperatures of printing unit electo and radio elements has been studied/ The temperature sensor (thermocouple) and possible sources of error and considered/ The merhod of systemetic errors compensation for assurance of required accuracy of elements temperature measurment by means of temperatur sensor is proposed.
A new approach to the metrology of optical measurements - the quantum metrology of photons is proposed. The specific character of measurements of the quantum states of polarization of single photons and polarization-entangled photons is considered. The basic problems standing before the contemporary metrology of photons were formulated.
The methods of biomechanical systems design with artificial elements are analyzed. The data of high-precision measurements of all set of the biometric characteristics, determining of biomechanical system is a basis of mathematical model. The calculations allows to predict complications at denture installation.
Mathematical model of multichannel sensors unit based on diamond detector elements of cosmic radiation fluxes parameters monitoring module has been developed. The simulation of output of the multichannel sensors unit registering cosmic space ionizing radiation at different spaceship orbits under different sun activity has been carried out. The work was supported by the Ministry of Education and Science of the Russian Federation (unique identifier RFMEFI 60514Х0001).
Efficiency of optimal static posledovatenyh criteria for weak signal detection in background noise when the signal and the noise distributed Rayleigh. The comparison criteria by mathematical modeling
The method of partially depolarized dynamic light scattering is applied to measurements of gold nanorods dimensions in liquids using translational and rotational diffusion coefficients. Compared with known method we have possibility to limit the power of the laser and increase data set for inverse problem solution. Results of lengths of nanorods calculated from diffusion coefficients are in agreement with TEM data. Aspect ratios calculated from plasmon spectrums are more in agreement with TEM.
Analytical expressions for determining the complex slowing factor and reflection coefficient are obtained using a general form of the dispersion equation of the slow-wave system and taking into account the properties of the medium surrounding it. These parameters can also be measured experimentally. It is shown that the determination of these quantities enables a simplified analysis of the transformation of waves, and the structure and space charge of the electron beam in microwave devices with prolonged interaction to be carried out, using the example of a waveguide model of a traveling-wave tube.
The developed model of cell slow-wave system type chains of linked resonators with adjacent channel filled with plasma, using the method of equivalent systems. This model represents the octal-pole, which is used for determination and calculation of electrodynamic characteristics. Calculations show that the introduction of plasma allows to extend the working width slow-wave system and increase the coupling impedance.
The wireless sensor network with rectangular grating structure with from 20 to 260 numbers of clusters of smart sensors has been studied. The probability of non-failure operation, a cycle of survey duration have been estimated.
Approach to processing the output information of a spectrometer on diamond detectors used on board the space apparatus is considered. The spectrometer on diamond detectors forms 24 output signals containing integrated quantitative characteristics of the streams of space radiation in the environment (electrons, protons and the heavy charged particles) in the power range from 0 to 10000 MeV. The mathematical apparatus allowing to receive differentiable information on a stream of electrons, on a stream of protons and on a stream heavy charged particles stream in the 21 power range is offered.
Demonstrated singleton UV photodetector based on diamond, which is used in spectrophotometric equipment. This photodetector has spectral photosensitivity characteristic depending on the magnitude of the applied bias voltage. Presents the spectral characteristics of photosensitivity of the photodetector obtained experimentally. The possibility of using such photodetectors for systems analysis of the composition of multi-component mixtures and the use of photodetectors in spectrometry.
The elements and structure of a distributed wireless monitoring system to detect gas leaks in real time, providing safe and reliable operation of the gas transmission network.
The results of development experimental sample of mesure with relief elements size less than 100 nm for calibration of optical, near-field and electron microscopy are presented.
The transformer analog-digital converter of temporal type angular displacements without the stage of displacement phase conversion and with the direct transformation of displacement to temporal interval and then to digital code is developed. The device functional scheme and mathematical description are considered, the maximal relative error is estimated.