Методика оценки эффективности квалиметрических технологий в когнитивной радиосвязи : научное издание | Научно-инновационный портал СФУ

Методика оценки эффективности квалиметрических технологий в когнитивной радиосвязи : научное издание

Перевод названия: Method of assessment efficiency quality measurement technologies cognitive radio

Тип публикации: статья из журнала

Год издания: 2016

Ключевые слова: квалиметрия, мягкий контроль, нейрокибернетика, обработка изображений, распознавание образов, когнитивная радиосвязь, quality measurement, soft control, Neurocybernetics, processing of images, Cognitive radios

Аннотация: Рассмотрены основные проблемы космического сегмента когнитивной радиосвязи на примере орбитального контроля эксплуатационных характеристик антенн космических аппаратов. When facing complex phenomena that are seemingly conflicting with existing laws of nature, when taking multiple attempts to explain the phenomenon, one can realize that new beautiful and simple laws are necessary. The gap between the laws and the observed phenomena is defined as the complexity. Researchers' are shifting from the revolution in the laws to the production of intelligent devices. We have moved from the era of the great scientific revolutions to the era of hybrid cognitive technologies. Complexity is the technical property of a system, expressed in surprising, unpredictable, inexplicable randomness of its behavior. Instead of solving the extremely complex equations we can deal with the complexity by the means of the organization of computing and (or) physical experimentation. External factors influencing the system are very important for solution of the complex engineering problems. Among such factors we can list the environment, the climate, the biosphere, as well as the human factor in relation to the experience of implementation of technological projects. Basic steps to deal with the complexity are the complexity qualimetry, the cognitive model of reduction and invariant manifolds, the search for hidden relation-ships, the criteria and the interpretation of the experiments. When a complex technical system is controlled by the means of modelling this system, it is inadequate to its intended aim because of the limited resources, unreachable isomorphism of the used model, and so forth. The given concepts clearly indicate the low reliability and limited effectiveness of the behavior of a complex technical systems, due to the unavoidable random set of internal and external factors influencing the system. The article describes the role, the principles of organization and the ways of implementing qualimetric technologies in cognitive radio communication, with the example of large-size convertible hybrid reflector antenna systems. Antenna systems perform a vital function in communication as a part of communication spacecrafts. Currently the antenna systems with diameters from 10 to 100 m, working at frequencies up to 900 GHz are being developed. The construction of a spacecraft antenna system, having high requirements for stability of geometric characteristics, have low toughness, high level of thermal, mechanical and other types of deformations. Improving the efficiency of antenna systems of a spacecraft, at all stages of the life cycle, can be reached with the means of cognitive control. In Siberian Federal University the departments of infocommunications, instrument design and nanoelectronics, the research center «Applied neuroinformatics» in cooperation with joint-stock companies SPE ISS and NPP RS develop the methodology, the software and the hardware for the means of cognitive control. The autonomous systems of cognitive control are primarily designed for the purposes of qualimetry of the radio communication systems and their life cycle as a part of a spacecraft. The laboratory sample of the surface shape change control system for the «SKIF» reflector which was designed and tested in the course of this project, can form the dynamic topograms of deviations of the actual surfaces, the units and the elements of the antenna system of the spacecraft, as well as track their mutual position in real-time. The obtained information on the geometric characteristics of the spacecraft can be used to diagnose the performance, the radio characteristics of the antenna system. This system creates a closed loop for automated reporting the characteristics of the spacecraft performance.

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Издание

Журнал: Успехи современной радиоэлектроники

Выпуск журнала: 11

Номера страниц: 248-252

ISSN журнала: 20700784

Место издания: Москва

Издатель: Закрытое акционерное общество Издательство Радиотехника

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