Труды сотрудников ИВМ СО РАН

[Текст]. - Электрон. дан. (180 Кб)
. - Режим доступа: http://icm.krasn.ru/refextra.php?id=2341. - Электрон. версия печ. публикации . - Режим доступа: http://library.krasn.ru/trudy/2000/2341lab23rus_30.pdf (Полный текст) : статья / Е.Н. Васильев, В.А. Деревянко, В.Е. Косенко. - Электрон. дан. (180 Кб) // Теория и эксперимент в современной физике. - Красноярск : Красноярский Госуниверситет, 2000. - С. 47-57
Аннотация: This paper offers a mathematical model to obtain a numerical calculation and optimization of the thermal regimes of satellite radio electronic apparatus in vacuum condition. This model consists of two levels. The first one is finding the temperature distribution of the non-tightness satellite surface. The second one is the simulation of the simulation of the single radio technical device temperature regime.

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Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Деревянко, Валерий Александрович; Derevyanko V.A.; Косенко, В.Е.; Vasilyev E.N.

[Text] : статья / N.V. Erkaev, V.A. Shaidurov, V.S. Semenov, H.K. Biernat // Nonlinear Processes in Geophysics. - 2002. - Vol. 9. - p. 163-172
Аннотация: Variations of the plasma pressure in a magnetic flux tube can produce MHD waves evolving into shocks. In the case of a low plasma beta, plasma pressure pulses in the magnetic flux tube generate MHD slow shocks propagating along the tube. For converging magnetic field lines, such as in a dipole magnetic field, the cross section of the mag-netic flux tube decreases enormously with increasing mag-netic field strength. In such a case, the propagation of MHD waves along magnetic flux tubes is rather different from that in the case of uniform magnetic fields. In this paper, the propagation of MHD slow shocks is studied numerically us-ing the ideal MHD equations in an approximation suitable for a thin magnetic flux tube with a low plasma beta. The results obtained in the numerical study show that the jumps in the plasma parameters at the MHD slow shock increase greatly while the shock is propagating in the narrowing mag-netic flux tube. The results are applied to the case of the interaction between Jupiter and its satellite Io, the latter be-ing considered as a source of plasma pressure pulses.

http://icm.krasn.ru/refextra.php?id=2437,
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Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Shaidurov, V.A.; Шайдуров В.А.; Semenov, V.S.; Семенов В. С.; Biernat, H.K.; Еркаев, Николай Васильевич

[Text] : статья / A. P. Shevyrnogov, G. S. Vysotskaya // Conference on Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions. Proceedings of SPIE. - 2011. - Vol. 8175 . - Ст. 817517DOI 10.1117/12.897819 . -

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Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Vysotskaya, G.S.; Высоцкая, Галина Степановна

[Text] : тезисы доклада / G.S. Vysotskaya, A.P. Shevyrnogov // EMS Annual Meeting Abstracts. - 2011. - Vol. 8. - p. 364

Тезисы доклада

Держатели документа:
ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Shevyrnogov, A.P.; Высоцкая, Галина Степановна

[Text] / M. Ampferer [et al.] // Ann. Geophys. - 2010. - Vol. 28, Is. 3. - pp. 779-787. - Cited References: 30. - This work is supported by grants 07 05 00135, 09-06-91000 from the Russian Foundation for Basic Research and by the Program 16.3 of the Russian Academy of Sciences. Additional support is due to the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under Project I193-N16 and the "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences. The authors are grateful to the referees whose comments helped considerably to improve the paper. . - ISSN 0992-7689РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: It is well known that lithospheric electromagnetic emissions are generated before earthquakes occurrence. In our study, we consider the physical penetration mechanism of the electric field from the Earth's surface, through the atmosphere-ionosphere layers, and until its detection in space by satellites. A simplified approach is investigated using the electric conductivity equation, i.e., del((sigma) over cap.del Phi) = 0 in the case of a vertical inclination of the geomagnetic field lines. Particular interest is given to the conductivity profile near the ground and the electric field distribution at the Earth's surface. Our results are discussed and compared to the models of Pulinets et al. (2003) and Denisenko et al. (2008). It is shown that the near ground atmospheric layer with low conductivity decreases the electric field penetration into the ionosphere. The model calculations have demonstrated that the electric field of lithospheric origin is too weak to be observed at satellite altitudes.


Доп.точки доступа:
Ampferer, M.; Denisenko, V.V.; Денисенко, Валерий Васильевич; Hausleitner, W.; Krauss, S.; Stangl, G.; Boudjada, M.Y.; Biernat, H.K.

[Text] / V. V. Denisenko [et al.] // Nat. Hazards Earth Syst. Sci. - 2008. - Vol. 8, Is. 5. - P1009-1017. - Cited References: 60. - This work is supported by grant 07-05-00135 from the Russian Foundation for Basic Research and by the Programs 16.3 and 2.16 of the Russian Academy of Sciences. Further support is due to the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under project P20145-N16. We acknowledge support by the Austrian Academy of Sciences, "Verwaltungstelle fur Auslandsbeziehungen", and the Russian Academy of Sciences. Part of this research was done during academic visits of V. V. 'Denisenko to the Space Research Institute of the Austrian Academy of Sciences in Graz as well as during an academic visit of H. K. Biernat to the Institute of Computational Modelling of the Russian Academy of Sciences in Krasnoyarsk. . - ISSN 1561-8633РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Water Resources

Аннотация: The classic approach to calculate the electrostatic field penetration, from the Earth's surface into the ionosphere, is to consider the following equation del. ((sigma) over cap del Phi) =0 where (sigma) over cap and Phi are the electric conductivity and the potential of the electric field, respectively. The penetration characteristics strongly depend on the conductivities of atmosphere and ionosphere. To estimate the electrostatic field penetration up to the orbital height of DEMETER satellite (about 700 km) the role of the ionosphere must be analyzed. It is done with help of a special upper boundary condition for the atmospheric electric field. In this paper, we investigate the influence of the ionospheric conductivity on the electrostatic field penetration from the Earth's surface into the ionosphere. We show that the magnitude of the ionospheric electric field penetrated from the ground is inverse proportional to the value of the ionospheric Pedersen conductance. So its typical value in day-time is about hundred times less than in night-time.


Доп.точки доступа:
Denisenko, V.V.; Денисенко, Валерий Васильевич; Boudjada, M.Y.; Horn, M.; Pomozov, E.V.; Помозов, Егор Владимирович; Biernat, H.K.; Schwingenschuh, K.; Lammer, H.; Prattes, G.; Cristea, E.

[Text] / A. Shevyrnogov [et al.] // Adv. Space Res. - 2008. - Vol. 41, Is. 1. - P36-40, DOI 10.1016/j.asr.2007.02.008. - Cited References: 7 . - ISSN 0273-1177РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: The paper shows the efficiency of an application of the vegetation index image time series to determine long-term vegetation dynamics. The influence of large industrial centers of Siberia on the near-by vegetation is demonstrated. The analysis of the data shows that the influence of industrial waste is stronger in the Siberian North. These regions are characterized by critical conditions for vegetation existence. In the south of the Krasnoyarsk region, human impact is also important, but the possibility of vegetation self-rehabilitation is higher. The present-day economic situation in Russia is unique, with a temporary abrupt fall of industrial production and its following increase. Thus, we managed to analyze the degree of human impact on the environment within a relatively short-time interval. (C) 2007 Published by Elsevier Ltd on behalf of COSPAR.


Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна; Sukhinin, A.; Frolikova, O.; Tchernetsky, M.

[Text] / A. P. Shevyrnogov, G. S. Vysotskaya // SYNERGISTIC USE OF MULTISENSOR DATA FOR LAND PROCESSES. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON PRESS LTD, 1998. - Vol. 22: A3 1 Symposium of COSPAR Scientific Commission A on Synergistic Use of Multisensor Data for Land Processes at 31st COSPAR Scientific Assembly (JUL 14-21, 1996, BIRMINGHAM, ENGLAND), Is. 5. - P701-704, DOI 10.1016/S0273-1177(97)01136-8. - Cited References: 7 . - ISBN 0273-1177. - ISBN 0-08-043469-XРУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Remote Sensing

Аннотация: To preserve and utilize the biosphere it is imperative that we understand the long-term dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. However, size and access make its investigation labour-intensive. Dependence of primary production on high variability of hydrophysical phenomena in the ocean (fluctuations of currents, frontal zones, etc.) makes it difficult to locate points to measure chlorophyll concentration dynamics. To locate such quasistationary zones with respect to seasonal dynamics of chlorophyll concentration by satellite data the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. II use made it possible to locate such zones over the entire ocean. The work shows zones on the Central and Northern Atlantic. They form the ground to analyse perennial dynamics of chlorophyll concentration. The quasistationary zones are proposed for systematic monitoring of phytopigment concentration by space-borne and marine craft. (C) 1998 COSPAR. Published by Elsevier Science Ltd.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Branch, Ctr Comp, Krasnoyarsk 660036, Russia
ИБФ СО РАН
ИВМ СО РАН
Institue of Biophysics, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation
Computer Center, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shevyrnogov, A.P.; Vysotskaya, G.S.; Высоцкая, Галина Степановна

/ A. Shevyrgonov, G. Vysotskaya, E. Shevyrgonov // Advances in Space Research. - 2002. - Vol. 30, Is. 11. - P. 2541-2546, DOI 10.1016/S0273-1177(02)80334-9 . - ISSN 0273-1177
Аннотация: The work presents long-standing CZCS-satellite-based data about spatial distribution of anomalies in chlorophyll concentration and temperature of the ocean. An anomaly criterion is proposed. Maps of Atlantic ocean areas with elevated probability of anomalies are given. Properties of anomalous zones in different parts of the Atlantic ocean are discussed. Satellite-based maps of anomaly coefficients for chlorophyll concentration and temperature in the Atlantic ocean have been shown to feature substantial differences, the zones of elevated anomaly of chlorophyll concentration and temperature - to be close only in the vicinity of the Amazon outflow into the Atlantic ocean. Along with fundamental knowledge about dynamics of biological phenomena in the ocean the methods described may be used to reveal deviations due to anthropogenic impact. The methods presented may be used to process SeaWiFS prograna data. The data derived may be used to analyze long-standing time series to estimate randomness of cunent changes. В©2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

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Доп.точки доступа:
Shevyrgonov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна; Shevyrgonov, E.

/ A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2004. - Vol. 33, Is. 7. - P. 1179-1183, DOI 10.1016/S0273-1177(03)00369-7 . - ISSN 0273-1177
Аннотация: The work presents the data on the spatial distribution of temperature anomalies in the Global Ocean, based on the long-term measurements with the AVHRR satellite equipment. It is noteworthy that such results can be only obtained by using long time series of satellite images. To obtain them by ship-borne methods is actually impossible. The proposed anomaly criterion is equal to a difference between minimum/maximum and average temperature, normed for the mean square deviation. The difference is calculated from the whole time series (with regard to a season). Based on this criterion, anomalies can be distinguished on the background of usual seasonal dynamics at various absolute values of deviations of the measured parameter. Besides, rare, single, fluctuations can be also revealed. Based on the proposed criterion, connected zones have been defined. These zones occur almost in every part of the Global Ocean. The data obtained have been analyzed in association with the CZCS (1978-1986) and SeaWiFS satellite images in order to compare them with the areas of anomalous dynamics of chlorophyll concentration and the regions quasistationary in the seasonal dynamics of chlorophyll. Anomalies in the temperature dynamics are of exceptional importance for the formation of climatic deviations; they affect the ocean-atmosphere interaction and reflect variations in the hydrological structure of the surface waters. The work presents a comparison with the dynamics of chlorophyll concentration distribution determined from the SeaWiFS data for the Atlantic Ocean. В© 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.

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Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна; Shevyrnogov, E.

/ A. Shevyrnogov, G. Vysotskaya, E. Shevyrnogov // Advances in Space Research. - 2002. - Vol. 30, Is. 11. - P. 2535-2540, DOI 10.1016/S0273-1177(02)80332-5 . - ISSN 0273-1177
Аннотация: The new data on anomalies in seasonal dynamics of chlorophyll concentration in the ocean have altered the approach to the analysis of long-term trends of phytopigments in the surface layer of the ocean. Zones have been found in which at various times there was a many-fold increase in chlorophyll concentration versus its usual level. These changes are local in time and space. If anomalies in the long-term tendencies in the change of phytopigment surface distribution in the ocean are ignored in the analysis, the resulting picture will inadequately reflect the real processes. The work presents the results of the analysis of long-term trends of chlorophyll concentration on the basis of the CZCS satellite data in the Atlantic Ocean. The results are given as maps representing different variants of trends. The data obtained can be used to analyze the consequences of long-term changes of climate and changes in the interaction between the atmosphere and the ocean. В©2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

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Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна; Shevyrnogov, E.

/ A. Shevyrnogov [et al.] // Advances in Space Research. - 2000. - Vol. 26, Is. 7. - P. 1169-1172, DOI 10.1016/S0273-1177(99)01142-4 . - ISSN 0273-1177
Аннотация: Deep insight into types of vegetation variability provided by AVHRR space scanner images of vegetation index spatial distribution helps reveal impact of land surface changes on environment. The Institute of Computational Modeling SB RAS has developed nonparametric algorithms of automatic to classify and recognize patterns of these images which helped to reveal: (1) major variability types (generally connected); (2) areas belonging to small classes, which can be used to reveal deviations from 'normal' (e.g., forest fires, etc.); (3) deviation from a certain type of dynamics indicative of changes in condition of plants, which can be used to diagnose pathology at early stages; (4) impact of economical activities on vegetation in Norilsk area. The authors provide biological interpretation of the satellite data. Computer-animated dynamics and color maps are presented. Nonparametric algorithms of an automatic classification and pattern recognition were provided by the Institute of Computational Modeling SB RAS. (C) 2000 COSPAR. Published by Elsevier Science Ltd.

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Доп.точки доступа:
Shevyrnogov, A.; Vysotskaya, G.; Высоцкая, Галина Степановна; Sidko, A.; Dunaev, K.

/ A. P. Shevyrnogov, M. Y. Chernetskiy, G. S. Vysotskaya // Izv. Atmos. Ocean Phys. - 2013. - Vol. 49, Is. 9. - P. 1047-1056, DOI 10.1134/S0001433813090132 . - ISSN 0001-4338
Аннотация: It is found that the nonlinear positive Normalized Difference Vegetation Index (NDVI) trend of mountain taiga in the south of Krasnoyarsk Krai has been negative since 1999-2000. A comparison with the boreal belt of northern Eurasia showed that, though still nonnegative, the positive trend has distinctly decreased to nearly a plateau. A trend analysis of radiation temperature of the surface revealed that the temperature shows a decreasing trend for the selected region of mountainous taiga and an increasing trend for northern Eurasia. We compared air-temperature data from the Yermakovskoe meteorological station to eliminate a preliminary data-processing error. Regression analysis demonstrated a fairly high degree of correlation. Also, we found a quite high degree of correlation between time series and trends of air temperature and NDVI. Trends in air temperature in northern Eurasia according to NCEP-DOE Reanalysis 2 data also confirm the trend found on the basis of satellite data. © 2013 Pleiades Publishing, Ltd.

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Доп.точки доступа:
Shevyrnogov, A.P.; Chernetskiy, M.Y.; Vysotskaya, G.S.; Высоцкая, Галина Степановна

[Text] / M. Chernetskiy [et al.] // Adv. Space Res. - 2009. - Vol. 43, Is. 2. - P. 206-213, DOI 10.1016/j.asr.2008.04.002. - Cited References: 24 . - ISSN 0273-1177РУБ Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: In this work historical investigations and modern results of classification of the Krasnoyarsk Reservoir are presented. The paper presents results of studying the dynamics of phytopigments and other optically active components, using multispectral satellite data. Several approaches to interpreting satellite data for optically complex inland water bodies are offered. Based on results of historical investigations it is shown that the spatial distribution of phytoplankton in the reservoir stems back to the time of its formation. Color index in the red spectral region (CIR) is introduced. A relationship between the color index and chlorophyll concentration is investigated. The CIR, derived from the AVHRR data, has been found to be related to chlorophyll concentration. Based on MODIS data, the waters of the Krasnoyarsk Reservoir have been classified in accordance with their optical spectral variability, using the technique of unsupervised Iso-Data classification. An empirical relationship between multispectral MODIS data and the ground-truth measurements of chlorophyll concentration has been found. (C) 2008 COSPAR. Published by Elsevier Ltd. All rights reserved.


Доп.точки доступа:
Chernetskiy, M.; Shevyrnogov, A.; Shevnina, S.; Vysotskaya, G.; Высоцкая, Галина Степановна; Sidko, A.

/ Yu. L. Fateev [et al.] // AIP Conference Proceedings. - 2014. - Vol. 1611: International Conference on Analysis and Applied Mathematics (ICAAM 2014). - P12-15DOI 10.1063/1.4893795 . -
Аннотация: In this paper, an effective exhaustive search method for the phase ambiguity resolution in angle-measuring equipment of satellite navigation is considered.


Доп.точки доступа:
Fateev, Yu.L.; Dmitriev, D.D.; Tyapkin, V.N.; Garin, E.N.; Shaidurov, V.V.; Шайдуров, Владимир Викторович

/ V. V. Denisenko // Russ. J. Phys. Chem. B. - 2015. - Vol. 9, Is. 5. - P789-795, DOI 10.1134/S199079311505019X . - ISSN 1990-7931
Аннотация: Known models of the penetration of the electric field from the Earth’s surface to the ionosphere due to the electric conductivity of the atmosphere, including models with external currents, are analyzed. Principle disadvantages of models predicting a considerable penetration of the field to the ionosphere are described. It is shown that the penetrating fields are too weak and this makes it impossible to detect them in data of satellite measurements on the background of usual ionospheric fields. A conclusion is made about the necessity to study other physical processes providing the influence of lithospheric processes on the ionosphere. © 2015, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Computational Modelling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Денисенко, Валерий Васильевич

[Текст] : статья / Л. Ф. Ноженкова, О. С. Исаева, Е. А. Грузенко // Вычислительные технологии. - 2015. - Т. 20, № 3. - С. 33-45 . - ISSN 1560-7534
   Перевод заглавия: The method for system modelling of the spacecraft on-board equipment
Аннотация: Рассмотрен метод системного моделирования бортовой аппаратуры командно-измерительной системы космического аппарата. Дано описание модели и эвристического метода направленного пошагового проектирования, в результате которого строится модель, имитирующая структуру, свойства и методы функционирования командно-измерительной системы. Описана программная реализация инструментальных средств, позволяющих выполнять построение модели: задавать конфигурацию, коммутационные соединения и логику информационного взаимодействия. Исследования проводятся в рамках создания программного обеспечения для поддержки конструирования бортовой аппаратуры командно-измерительной системы космического аппарата.
We address a method for modelling of onboard equipment for the command and the measuring system of the spacecraft. The result of the method is the information and graphical simulation model that represents the specified level of details for the configuration and functions of the on-board equipment. A heuristic approach is used to support the model construction that allows a sequence of model changes in order to simulate the required specifications and functions of the equipment. The model is designed to simulate the operation of a command-measuring system. The command-measuring system is designed for command-measuring control of onboard systems, transmission of telemetric information to Earth control complex, measurement of current navigation parameters of a spacecraft's orbit. We have formally described the model of a command-measuring system, and also designed the methods and instruments allowing to present its architecture and a configuration of connections. The model's function rules are explicitly set in the knowledge base of the product. The rules describe the logics for operation of the command-measuring system: transfer of command information to spacecraft's systems, acceptance and transmission of telemetric information, conditions of the onboard equipment control, choice of interfaces for the equipment. The research is carried out for creation of the “Program-mathematical model of the onboard equipment command and measurement system”. The program includes the tools for model building and simulation. During the simulation it renders the sequence of actions defined for a specific model configuration. The software includes advanced configuration features models, statistical modelling of storage, management simulations, and analyze the results of the model. These functions allow a user to enter a variety of heuristics to analyze design solutions. The program was put into trial operation in the JSC "Academician MF Reshetnev Information Satellite Systems".

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Исаева, Ольга Сергеевна; Isaeva O.S.; Грузенко, Евгений Андреевич; Gruzenko E.A.; Nozhenkova L.F.

[Текст] : статья / Н. А. Тестоедов [и др.] // Вестник Сибирского государственного аэрокосмического университета им. академика М.Ф. Решетнева. - 2015. - Т. 16, № 2. - С. 364-367 . - ISSN 1816-9724
   Перевод заглавия: The possibility of constructing a radio communication using orbital reflectors and magnetic antennas polarization rotating
Аннотация: Применение космоса для традиционных радиолюбительских приложений возможно с помощью относительно дешевых маложивущих микроспутников, которые выводятся на низкие орбиты экипажем космической станции. Радиосвязь может быть построена на базе отражателей и частотно-независимых малых магнитных антенн с вращающейся поляризацией, которые должны выполнять специальную функцию - связывать излученную в пространстве электромагнитную энергию с электронными компонентами аппаратуры, и поэтому они являются одними из основных элементов, определяющих построение радиотехнических систем. Поскольку в природе нет магнитных зарядов и, следовательно, нет магнитного тока, понимаемого как движение этих зарядов, то магнитный излучатель как элемент магнитного тока не может быть осуществлен, однако если антенный излучатель изначально создает переменное вращающееся вихревое магнитное поле, создать антенну возможно, реализовав в ней свойства магнитоэлектрической индукции. Первая телефонная спутниковая связь между Америкой и Великобританией была налажена через массивный экспериментальный американский спутник Echo1, запущенный на низкую околоземную орбиту, который представлял собой шар диаметром около 30 м, изготовленный из радиоотражающего материала. Тип такого спутника связи можно применить и в предлагаемой радиосвязи. Однако поскольку приемные и передающие антенны являются узконаправленными, то космический аппарат должен иметь на орбите такую ориентацию, чтобы он принял сигнал и отразил его. Диаметр сферы при этом может быть значительно меньших размеров, а положение на орбите можно удерживать корректирующей двигательной установкой, расположенной в центре масс. Радиоотражающая поверхность может быть выполнена из надувной пленки или сетеполотна, изготовленного, например, из позолоченной вольфрамовой проволоки диаметром порядка 30 мкм, разворачиваемого в сферу в трансформируемой конструкции. Возможен вариант выполнения сетеполотна из магнитно-мягкого материала типа сталей Э8, Э10, железа «Армко» или пермаллоя, которые являются идеальными проводниками магнитных потоков и не требуют охлаждения до криогенных температур.
The use of space for traditional Amateur radio applications is possible using relatively cheap only briefly long microsatellites, which are displayed on a low orbit of the space station crew. The radio can be built on the basis of reflectors and frequency-independent small magnetic antenna with circular polarization, which must fulfill a special function: to associate radiated into space electromagnetic energy with electronic components of the apparatus, and therefore are one of the main defining elements of the building radio systems. Since there are no magnetic charges, and therefore, no magnetic current, understood as the movement of these charges, a magnetic emitter, a magnetic current element, cannot be accomplished, however, if the antenna radiator initially creates an alternating rotating vortex magnetic field, it is possible to create the antenna having in it the properties of magneto-electric induction. The first satellite phone communication between America and Britain was established through a massive experimental American satellite Echo1, launched into low earth orbit, which represented a ball with a diameter of about 30 m, made of radiotracer material. The type of such a communication satellite can be used in the proposed radio communications. However, since the receiving and transmitting antennas are highly directional, the spacecraft must be in the orbit of such an orientation that it took the signal and reflected it. The diameter of the sphere can be much smaller, and the position in orbit to keep a corrective propulsion system, located in the center of mass. Radioreflective surface may be made of an inflatable film or setpolicy made, for example, of gold-plated tungsten wire with a diameter of about 30 ?m deployed in the field in transformable structures. Possible embodiment of setpolicy of magnetically soft material type steel A, E, iron “Armco” or permalloy, which are perfect conductors of magnetic flux and do not require cooling to cryogenic temperatures.

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Держатели документа:
АО «Информационные спутниковые системы» имени академика М. Ф. Решетнёва»
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Тестоедов, Н.А.; Testoedov N.A.; Двирный, В.В.; Dvirnyi V.V.; Крушенко, Генрих Гаврилович; Krushenko G.G.; Двирный, Г.В.; Dvirnyi G.V.

/ Y. L. Fateev [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2016. - Vol. 9, Is. 2. - P173-179, DOI 10.17516/1997-1397-2016-9-2-173-179 . - ISSN 1997-1397
Аннотация: The article concluded probability distribution functions sum of the squares of the random variables in the non-zero expectations. The resulting distribution function is possible to create an efficient single-step phase ambiguity resolution algorithm in determining the spatial orientation of the signals of satellite radio navigation systems. Obtained thresholds at rejecting false solutions, as well as statistical data of the algorithm. © Siberian Federal University. All rights reserved.

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Держатели документа:
Military Engineering Institute, Siberian Federal University, Svobodny, 79, Krasnoyarsk, Russian Federation
Institute of Computational Modelling, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/44, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Fateev, Y. L.; Shaidurov, V. V.; Garin, E. N.; Dmitriev, D. D.; Tyapkin, V. N.

[Text] / Y. Fateev [et al.] ; ed.: A. . Ashyralyev, A. . Lukashov // INTERNATIONAL CONFERENCE ON ANALYSIS AND APPLIED MATHEMATICS (ICAAM : AMER INST PHYSICS, 2016. - Vol. 1759: 3rd International Conference on Analysis and Applied Mathematics (ICAAM) (SEP 07-10, 2016, Almaty, KAZAKHSTAN). - Ст. 020015. - (AIP Conference Proceedings), DOI 10.1063/14959629. - Cited References:11 . - РУБ Mathematics, Applied + Physics, Applied

Аннотация: In the present paper, the probability distribution function is derived for the sum of squares of random variables for nonzero expectations. This distribution function enables one to develop an efficient one-step algorithm for phase ambiguity resolution when determining the spatial orientation from signals of satellite radio-navigation systems. Threshold values for rejecting false solutions and statistical properties of the algorithm are obtained.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Inst Computat Modeling, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Fateev, Yury; Dmitriev, Dmitry; Tyapkin, Valery; Kremez, Nikolai; Shaidurov, V.V.; Шайдуров, Владимир Викторович; Ashyralyev, A... \ed.\; Lukashov, A... \ed.\