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У статті запропоновано методику вибору режимів роботи багатоантенних систем військового радіозв'язку в залежності від сигнально-завадової обстановки, яка заснована на адаптивному управлінні режимами роботи та параметрами режимів багатоантенних систем. Розроблена методика дозволяє здійснювати вибір режимів роботи багатоантенних систем військового радіозв'язку за схемами МІМО та МІМО-OFDM. ; В статье предложена методика выбора режимов работы многоантенных систем военной радиосвязи в зависимости от сигнально-помеховой обстановки, которая основана на адаптивном управлении режимами работы и параметрами режимов многоантенных систем. Разработанная методика позволяет осуществлять выбор режимов работы многоантенных систем военного радиосвязи по схемам МІМО и МІМО-OFDM. ; The article proposes a technique for selecting the modes of operation of multi-antenna systems of military radio communication, depending on the signal-interference situation, which is based on adaptive control of operating modes and parameters of multi-antenna systems. The developed technique allows to select the modes of operation of multi-antenna systems of military radio communication according to the schemes MIMO and MIMO-OFDM.

У статті запропоновано удосконалену методику вибору раціональних значень параметрів багатоантенних систем військового радіозв'язку з псевдовипадковою перестройкою робочої частоти в залежності від сигнально-завадової обстановки. Зазначена методика дозволяє здійснювати прогнозування сигнальнозавадової обстановки, обирати найбільш придатні робочі частоти, а також дозволяє не тільки змінювати швидкість перестройки робочої частоти але й змінювати вид та тривалість розширювальної послідовності, а також початкове заповнення формуючого поліному. ; В статье предложено усовершенствованную методику выбора рациональных значений параметров многоантенных систем военной радиосвязи с псевдослучайной перестройкой рабочей частоты в зависимости от сигнальнопомеховой обстановки. Указанная методика позволяет осуществлять прогнозирование сигнально-помеховой обстановки, выбирать наиболее подходящие рабочие частоты, а также позволяет не только изменять скорость перестройки рабочей частоты, но и изменять вид и продолжительность расширительной последовательности, а также начальное заполнение формирующего полинома. ; In the article offered an improved method of selecting rational values of the parameters of multi-antenna systems of military radio communication with pseudo-random reconstruction of the operating frequency, depending on the signalinterference situation. This technology makes it possible to predict the signal-noise environment, choose the most suitable operating frequencies, and also is not only change speed of the reconstruction of the operating frequency, but also to change form and duration of the expansion sequence, and also initial filling of the forming polynomial.

[EN] Novel selective ceramic-supported thin polyimide films produced in a single dip coating step are proposed for membrane applications at elevated temperatures. Layers of the polyimides P84 (R), Matrimid 5218 (R), and 6FDA-6FpDA were successfully deposited onto porous alumina supports. In order to tackle the poor compatibility between ceramic support and polymer, and to get defect-free thin films, the effect of the viscosity of the polymer solution was studied, giving the entanglement concentration (C*) for each polymer. The C* values were 3.09 wt. % for the 6FDA-6FpDA, 3.52 wt. % for Matrimid (R), and 4.30 wt. % for P84 (R). A minimum polymer solution concentration necessary for defect-free film formation was found for each polymer, with the inverse order to the intrinsic viscosities (P84 (R) >= Matrimid (R) » 6FDA-6FpDA). The effect of the temperature on the permeance of prepared membranes was studied for H-2, CH4, N-2, O-2, and CO2. As expected, activation energy of permeance for hydrogen was higher than for CO2, resulting in H-2/CO2 selectivity increase with temperature. More densely packed polymers lead to materials that are more selective at elevated temperatures. ; This work was financially supported by the Spanish Government through predoctoral training grants for Centres/units of Excellence "Severo Ochoa" (SEV-2016-0683), which gave S. Escorihuela the opportunity to undertake a research stay at Helmholtz-Zentrum Geesthacht (HZG), Spanish Ministry of Economy and Competitiveness (Project ENE2014-57651-R) and Helmholtz-Zentrum Geesthacht (HZG) through the technology transfer project program and by the Helmholtz Association of German Research Centers through the Helmholtz Portfolio MEMBRAIN. The authors thank M. Schieda and P. Merten for the support in the coating process and viscosity determination, and the microscopy service at Universitat Politecnica de Valencia (UPV) for the FE-SEM images. ; Escorihuela-Roca, S.; Tena, A.; Shishatskiy, S.; Escolástico Rozalén, S.; Brinkmann, T.; Serra ...

[EN] Three polyimides and six inorganic fillers in a form of nanometer-sized particles were studied as thick film solution cast mixed matrix membranes (MMMs) for the transport of CO2, CH4, and H2O. Gas transport properties and electron microscopy images indicate good polymer-filler compatibility for all membranes. The only filler type thatdemonstrated good distribution throughout the membrane thickness at 10 wt.% loading was BaCe0.2Zr0.7Y0.1O3 (BCZY). The influence of this filler on MMM gas transport properties was studied in detail for 6FDA-6FpDA in a filler content range from one to 20 wt.% and for Matrimid((R)) and P84((R)) at 10 wt.% loading. The most promising result was obtained for Matrimid((R))10 wt.% BCZY MMM, which showed improvement in CO2 and H2O permeabilities accompanied by increased CO2/CH4 selectivity and high water selective membrane at elevated temperatures without H2O/permanent gas selectivity loss. ; This work was financially supported by the Spanish Government (SEV-2016-0683, SVP-2014-068356, Project ENE2014-57651-R and IJCI-2016-28330 grants) and GeneralitatValenciana (PROMETEO/2018/006 grant) and Helmholtz-Zentrum Geesthacht (HZG) through the technology transfer project program and by the Helmholtz Association of German Research Centers through the Helmholtz Portfolio MEMBRAIN. ; Escorihuela-Roca, S.; Valero, L.; Tena, A.; Shishatskiy, S.; Escolástico Rozalén, S.; Brinkmann, T.; Serra Alfaro, JM. (2018). Study of the Effect of Inorganic Particles on the Gas Transport Properties of Glassy Polyimides for Selective CO2 and H2O Separation. Membranes. 8(4). https://doi.org/10.3390/membranes8040128 ; S ; 8 ; 4 ; KULPRATHIPANJA, S. (2003). Mixed Matrix Membrane Development. Annals of the New York Academy of Sciences, 984(1), 361-369. doi:10.1111/j.1749-6632.2003.tb06012.x ; Robeson, L. M. (2008). The upper bound revisited. Journal of Membrane Science, 320(1-2), 390-400. doi:10.1016/j.memsci.2008.04.030 ; Baker, R. W. (2010). Research needs in the membrane separation industry: Looking back, ...

8 4 ; S ; [EN] Three polyimides and six inorganic fillers in a form of nanometer-sized particles were studied as thick film solution cast mixed matrix membranes (MMMs) for the transport of CO2, CH4, and H2O. Gas transport properties and electron microscopy images indicate good polymer-filler compatibility for all membranes. The only filler type thatdemonstrated good distribution throughout the membrane thickness at 10 wt.% loading was BaCe0.2Zr0.7Y0.1O3 (BCZY). The influence of this filler on MMM gas transport properties was studied in detail for 6FDA-6FpDA in a filler content range from one to 20 wt.% and for Matrimid((R)) and P84((R)) at 10 wt.% loading. The most promising result was obtained for Matrimid((R))10 wt.% BCZY MMM, which showed improvement in CO2 and H2O permeabilities accompanied by increased CO2/CH4 selectivity and high water selective membrane at elevated temperatures without H2O/permanent gas selectivity loss. This work was financially supported by the Spanish Government (SEV-2016-0683, SVP-2014-068356, Project ENE2014-57651-R and IJCI-2016-28330 grants) and GeneralitatValenciana (PROMETEO/2018/006 grant) and Helmholtz-Zentrum Geesthacht (HZG) through the technology transfer project program and by the Helmholtz Association of German Research Centers through the Helmholtz Portfolio MEMBRAIN. Escorihuela-Roca, S.; Valero, L.; Tena, A.; Shishatskiy, S.; Escolástico Rozalén, S.; Brinkmann, T.; Serra Alfaro, JM. (2018). Study of the Effect of Inorganic Particles on the Gas Transport Properties of Glassy Polyimides for Selective CO2 and H2O Separation. Membranes. 8(4). https://doi.org/10.3390/membranes8040128 KULPRATHIPANJA, S. (2003). Mixed Matrix Membrane Development. Annals of the New York Academy of Sciences, 984(1), 361-369. doi:10.1111/j.1749-6632.2003.tb06012.x Robeson, L. M. (2008). The upper bound revisited. Journal of Membrane Science, 320(1-2), 390-400. doi:10.1016/j.memsci.2008.04.030 Baker, R. W. (2010). Research needs in the membrane separation industry: Looking back, looking forward. ...

Запропоновано шляхи підвищення структурної скритності сигналу OFDM, проведено оцінку потенціальної скритності сигналу OFDM з додатковим розширенням спектру за допомогою квазіортогональних псевдовипадкових послідовностей та методом псевдовипадкового перестроювання робочої частоти. ; Предложены пути повышения структурной скрытности сигнала OFDM, проведена оценка структурной скрытности сигнала OFDM с дополнительным расширением спектра с помощью квазиортогональных псевдослучайных последовательностей и методом псевдослучайной перестройки рабочей частоты. ; The ways of OFDM-signal structural security increase are offered. Structural security estimation of OFDM-signal with additional spectrum spreading by quasiorthogonal pseudorandom sequences and by the method of pseudorandom operation frequency tuning is appraised.

У статті запропоновано алгоритм вибору робочих частот для засобів військового радіозв'язку в умовах впливу навмисних завад, що заснований на виборі вагових коефіцієнтів, які враховують ступінь використання робочих частот в умовах активного радіоелектронного подавлення. ; В статье предложенный алгоритм выбора рабочих частот для средств военной радиосвязи в условиях воздействия преднамеренных помех, который основан на выборе весовых коэффициентов, которые учитывают степень использования рабочих частот в условиях активного радиоэлектронного подавления. ; In the article offered algorithm of operating frequency selection for facilities of military radio communication in conditions of influence intentionally obstacle, which is based on selection weighting coefficients, which take into account degree of operating frequency in conditions of active electronic suppression.

[EN] Novel selective polymeric thin-film composite membranes (TFCMs) for applications at elevated temperatures were developed. Thin selective layers of the polyimides Matrimid 5218((R)) and 6FDA-6FpDA were cast on a developed polybenzimidazole (PBI) porous support prepared by a phase inversion process. The TFCM properties were investigated with different gases in a wide temperature range, including temperatures up to 270 degrees C. The membranes showed very high thermal stability and performed well at the elevated temperatures. The development of highly thermally resistant polymeric membranes such as these TFCMs opens opportunities for application in high-temperature integrated processes, such as catalytic membrane reactors for the water-gas shift reaction in order to maximize H-2 yield. ; This work was financially supported by the project "New reactor technologies for chemical and biochemical synthesis processes" ("Neue Reaktortechnologien fur Chemische und Biochemische Syntheseverfahren", FKZ: LFF FV 43), funded by the City of Hamburg (Freie und Hansestadt Hamburg, Behorde furWissenschaft, Forschung und Gleichstellung), Germany, the Spanish Government (SEV-2016-0683, SVP-2014-068356, Project ENE2014-57651-R and IJCI-2016-28330 grants), and Generalitat Valenciana (PROMETEO/2018/006 grant). ; Weigelt, F.; Escorihuela-Roca, S.; Descalzo, A.; Tena, A.; Escolástico Rozalén, S.; Shishatskiy, S.; Serra Alfaro, JM. (2019). Novel Polymeric Thin-Film Composite Membranes for High-Temperature Gas Separations. Membranes. 9(4):1-12. https://doi.org/10.3390/membranes9040051 ; S ; 1 ; 12 ; 9 ; 4 ; Schuldt, K., Pohlmann, J., Shishatskiy, S., & Brinkmann, T. (2018). Applicability of PolyActive™ Thin Film Composite Membranes for CO2 Separation from C2H4 Containing Multi-Component Gas Mixtures at Pressures up to 30 Bar. Membranes, 8(2), 27. doi:10.3390/membranes8020027 ; Brinkmann, T., Lillepärg, J., Notzke, H., Pohlmann, J., Shishatskiy, S., Wind, J., & Wolff, T. (2017). Development of CO 2 Selective Poly(Ethylene ...

1 12 9 4 ; S Herdegen, V., Werner, A., Milew, K., Haseneder, R., & Aubel, T. (2018). ACHEMA 2018: Membranen und Membranverfahren. Chemie Ingenieur Technik, 90(12), 1964-1971. doi:10.1002/cite.201800157 ; [EN] Novel selective polymeric thin-film composite membranes (TFCMs) for applications at elevated temperatures were developed. Thin selective layers of the polyimides Matrimid 5218((R)) and 6FDA-6FpDA were cast on a developed polybenzimidazole (PBI) porous support prepared by a phase inversion process. The TFCM properties were investigated with different gases in a wide temperature range, including temperatures up to 270 degrees C. The membranes showed very high thermal stability and performed well at the elevated temperatures. The development of highly thermally resistant polymeric membranes such as these TFCMs opens opportunities for application in high-temperature integrated processes, such as catalytic membrane reactors for the water-gas shift reaction in order to maximize H-2 yield. This work was financially supported by the project "New reactor technologies for chemical and biochemical synthesis processes" ("Neue Reaktortechnologien fur Chemische und Biochemische Syntheseverfahren", FKZ: LFF FV 43), funded by the City of Hamburg (Freie und Hansestadt Hamburg, Behorde furWissenschaft, Forschung und Gleichstellung), Germany, the Spanish Government (SEV-2016-0683, SVP-2014-068356, Project ENE2014-57651-R and IJCI-2016-28330 grants), and Generalitat Valenciana (PROMETEO/2018/006 grant). Weigelt, F.; Escorihuela-Roca, S.; Descalzo, A.; Tena, A.; Escolástico Rozalén, S.; Shishatskiy, S.; Serra Alfaro, JM. (2019). Novel Polymeric Thin-Film Composite Membranes for High-Temperature Gas Separations. Membranes. 9(4):1-12. https://doi.org/10.3390/membranes9040051 Schuldt, K., Pohlmann, J., Shishatskiy, S., & Brinkmann, T. (2018). Applicability of PolyActive™ Thin Film Composite Membranes for CO2 Separation from C2H4 Containing Multi-Component Gas Mixtures at Pressures up to 30 Bar. Membranes, 8(2), 27. ...

У статті запропоновано методику вибору раціональних значень параметрів засобів військового радіозв'язку з кодовим розділенням каналів в умовах активної радіоелектронної протидії, що заснована на виборі раціональних значень параметрів засобів радіозв'язку в залежності від сигнально-завадової обстановки. ; В статье предложена методика выбора рациональных значений параметров средств военной радиосвязи с кодовым разделением каналов в условиях активного радиоэлектронного противодействия, основанная на выборе рациональных значений параметров средств радиосвязи в зависимости от сигнально-помеховой обстановки. ; In the article offered ethod f choosing rational values parameters of military radio communication with code division of channels in conditions of active electronic countermeasures, based on choosing of rational values parameters of the radio communication depending of the signal- interference situation.

In article offered new science concept, with the help of which the organization of interaction and coordination models of the elements of military radio communication systems. ; В роботі запропонована нова наукова концепція, за допомогою якої здійснюється організація взаємодії і узгодження моделей елементів військових систем радіозв'язку. ; В работе предложена новая научная концепция, с помощью которой осуществляется организация взаимодействия и согласование моделей элементов военных систем радиосвязи.