This article reviews the problems of development of ground and on-board based information, controlling, and communication systems as a part of general controlling system;that is a complex of controling bodies, points ...
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ISBN:
(纸本)9781538656235;9781538656228
This article reviews the problems of development of ground and on-board based information, controlling, and communication systems as a part of general controlling system;that is a complex of controling bodies, points and tools, and respective organizational, technical and technological processes. The development of abovementioned systems is based on the process approach to their integration.
The problem of breakdown effect, also called multiphactor, in on-board equipment of satellite communication systems is considered. This negative effect affects the reliability of onboard devices of high radiation powe...
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ISBN:
(纸本)9781728106069
The problem of breakdown effect, also called multiphactor, in on-board equipment of satellite communication systems is considered. This negative effect affects the reliability of onboard devices of high radiation power and hinders the development of radio-electronic equipment for space applications in general. The breakdown effect mechanism is carried out. We show the specifics of breakdown effect in strip and coaxial components of satellite electronic equipment and also discuss how to prevent a possible discharge in on-board equipment.
the article considers methods of signal spectrum spreading, which served the basis for creating a new block diagram of the direct digital synthesizer of frequency-modulated signals. The offered structure of DDS has th...
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ISBN:
(纸本)9781538656235;9781538656228
the article considers methods of signal spectrum spreading, which served the basis for creating a new block diagram of the direct digital synthesizer of frequency-modulated signals. The offered structure of DDS has the increased operation speed and it allows forming multiple frequency frequency-modulated signals. The direct digital synthesizer is created for the synthesis of signals with frequency modulation and it can be used in radiolocation, navigation and adaptive broadband communication systems with a spread spectrum.
The new method of interpolation/approximation of single-dimension functions by the exponential polynomials (in the general case, complex polynomials) is suggested. A solution is based on the xi-transform od complex fu...
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ISBN:
(纸本)9781538656235;9781538656228
The new method of interpolation/approximation of single-dimension functions by the exponential polynomials (in the general case, complex polynomials) is suggested. A solution is based on the xi-transform od complex functions, which are given by the discrete set of equidistant samples. This problem is solved for dynamic systems with fundamental frequencies of any order. The operator model of the high-frequency front-end is synthesized for the on-board receiver of the data transmission system.
The article discusses the main topics and results of the scientific conference "systems of signalsgenerating and processing in the field of on boardcommunications", in which leading industry experts annual...
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The article proposes a device for compensation of dispersion distortions, based on the modification of the classic M-channel system of digital banks of analysis and synthesis with an ideal recovery. The modification c...
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ISBN:
(纸本)9781538656235;9781538656228
The article proposes a device for compensation of dispersion distortions, based on the modification of the classic M-channel system of digital banks of analysis and synthesis with an ideal recovery. The modification consists in adding additional compensatory delays and phase shifts in the synthesis channels, determined by the calculation method, depending on the slope of the frequency dispersion of the ionospheric channel.
An algorithm for determining the conditions under which the multi-position amplitude-phase manipulated signal at the output of the communication channel becomes a cyclostationary process is presented. The results of i...
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ISBN:
(纸本)9781728106069
An algorithm for determining the conditions under which the multi-position amplitude-phase manipulated signal at the output of the communication channel becomes a cyclostationary process is presented. The results of its use were used to estimate the resolution times and effective memory for various types of amplitude-frequency responses of the channel presented in this paper. New properties were revealed for channels with ISI
This paper presents the prototype of brain-computer interface (BCI), designed to control on-boardsystems. BCI functions of the basis of an artificial convolutional neural network that recognizes the patterns of activ...
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ISBN:
(纸本)9781538656235;9781538656228
This paper presents the prototype of brain-computer interface (BCI), designed to control on-boardsystems. BCI functions of the basis of an artificial convolutional neural network that recognizes the patterns of activity of the human brain. The device is characterized by a high-precision classifier of brain activity patterns, as well as high quality and stability of recording brain activity signals. The results of the recognition quality obtained during the experiment are presented.
This paper describes a blind two real signals separation method. Blind separation implies that there is no information about the signals except for received samples. This eliminates the presence of a systematic error ...
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ISBN:
(纸本)9781728106069
This paper describes a blind two real signals separation method. Blind separation implies that there is no information about the signals except for received samples. This eliminates the presence of a systematic error in determining the stirring matrix and the restoration of the original signals. As a criterion for the separation of signals in this paper, the cumulants of the second and third orders of the output signals were reduced to zero. To test the performance of the method, mixing and separation model was created, and the efficiency of the method was tested at various power levels of the intrinsic noise in the receiving channels.
Singling out the characteristic areas with typical dynamics in Lorenz system signals by means of non-harmonic spectrographic analysis, a method of representing the distributions of signal probabilities has been develo...
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ISBN:
(纸本)9781538656235;9781538656228
Singling out the characteristic areas with typical dynamics in Lorenz system signals by means of non-harmonic spectrographic analysis, a method of representing the distributions of signal probabilities has been developed. Interconnections have been established between the singled out areas of Lorenz system typical dynamics and distribution of probabilities. The minimal number of poly-Gaussian components, necessary for representing the signals with required accuracy, has been assessed.
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