Перегляд за автором "Tsekhmistro, R. I."
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Публікація Comparative analysis of pseudorandom number generation in the up‐to‐date wireless data communication(Институт радиофизики и электроники им. А. Я. Усикова, 2011) Tsekhmistro, R. I.; Kirichenko, L. O.; Krug, O. Y.; Storozhenko, A. W.The paper considers generation of pseudorandom number sequences derived by applyingrecurrent algorithm and chaotic reflections. The results of an operative implementation of these algorithms at the up‐to‐date microprocessor devices are presented. The generated sequenceshave been compared in terms of their compliance with the independence and evenness criteria.Публікація Modelling of influences of sensor reflection on the accuracy of a microwavev reflectometer(2014) Klyuchnyk, I. I.; Miroshnik, M. A.; Tsekhmistro, R. I.; Warsza, Z. L.; Zaichenko, O. B.In this paper the uncertainty component of a multisensor microwave reflectometer dependent on mutual reflections between sensors is described. One-line and two-lines arrangement of the set of sensor localization are considered. Adjacent sensors influence each other. The mathematical model of signal flow graphs of such a system was developed. The set of linear algebraic equations incorporating main reflections between sensors was worked out. The least squares method or Kalman filter for averaging the sensor signals with random distortions is used. The uncertainty of measuring the power by the multi-sensor reflectometer is estimated. The obtained results are discussed. The described methods of the uncertainty evaluation can be applied to automation of the multi-sensor reflectometer and in other multivariable measurements.Публікація Solving of sat – problems of artificial intelligence with the help of local elimination algorithms(Институт радиофизики и электроники им. А. Я. Усикова - научно-исследовательский институт Национальной академии наук Украины,, 2016) Miroshnik, M. A.; Tsekhmistro, R. I.; Demichev, А. IUsing elimination algorithms are promising for solving of the problem of propositional calculus testing. These problems are widely used in the practical checking of digital electron circuits of modern telecommunications. Based on the fuzzy logic, acyclic graph these algorithms provides a way for typical presentations of SAT-problems.Публікація The problem of simulation of microwave travelling wave process plant for drying timber(Институт радиофизики и электроники им. А. Я. Усикова - научно-исследовательский институт Национальной академии наук Украины,, 2011) Tsekhmistro, R. I.; Omarov, М. А.; Orekhova, S. D.Physical aspects of modeling of the electromagnetic field capacity distribution in the microwave chamber for wood drying submitted to the passage of the running wave are presented. Refinements of the available electromagnetic models which make it possible to remove existing shortages are given. The numerical analysis of the electromagnetic field capacity distribution in equidistant array of Hertz radiators is carried out. The analysis of the Hertz electric dipole electromagnetic phase characteristics is given for the conducting medium equivalent to the timber pile.