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检索条件"任意字段=Conference on Systems of Signals Generating and Processing in the Field of on Board Communications"

共 537 条记录，以下是281-290 订阅

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Analysis of Data Risk Management Methods for Personal Data Information systems

Analysis of Data Risk Management Methods for Personal Data I...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Dokuchaev, V.A. Maklachkova, V.V. Makarova, D.V. Volkova, L.V. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728147727

This article describes the problem of assessing the information quality risk tolerance using semantic models for high-loaded information and communication systems for personal data protection. The article is devoted to current topics - information risk, which plays an important role in all areas of human activity. The most popular risk management methods are considered, their features, characteristics and comparison among themselves are given. Attention is paid to some problems of risk management, such as risk assessment and the construction of a threat assessment model. © 2020 IEEE.

关键词： Linear programming

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Assessment of Information Capacity of Compressed Video Sequences for Information Security systems

Assessment of Information Capacity of Compressed Video Seque...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Komina, A. Nezhivleva, K. Votyakov, S. Stepanov, N. Vlasuyk, I. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9798350397727

During the exponential increase in online video streaming services, the development of information concealment technologies directly depends on video encoding and is essential for video streaming companies. The structure of the video remains to contain areas invisible to humans and can be used to conceal prohibited content. Steganography is a science exploring various methods of hiding information in multimedia objects, which should remain undetectable both statistically and for human perception. A large variety of video content can be used as a container to conceal information from unauthorized viewers. To solve this problem, the current research focus is on finding areas, where information can be hidden, or, in other words, areas inaccessible to human perception. The conference work proposes a new method and hardware-software system for creating a new assessment of the information capacity of compressed video sequences for information security systems, which would allow providing recommendations for the protection and detection of prohibited information in the network. © 2023 IEEE.

关键词： Video streaming

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Digital processing of Noisy signals of Radio Engineering systems with the Selection of Linear and Harmonic Components

Digital Processing of Noisy Signals of Radio Engineering Sys...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Vasilkov, Yu V. Sovetov, V.A. Perlov, A. Yu Borodin, V.V. Yaroslavl State Technical University Yaroslavl Russia Yaroslavl Higher Military School of Air Defense Yaroslavl Russia Academician A. L. Minz Radiotechnical Institute Moscow Russia Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781728147727

The work is devoted to the analysis of digital methods for extracting linear and periodic components in highly noisy signals of radio engineering systems. When analyzing random data, situations often arise when it is necessary to find out whether observations or estimates of signal parameters are statistically independent or whether they are subject to a trend - a monotonic or periodic change in the properties of systems or processes. This problem acquires special significance in the analysis of non-stationary data, in which it is necessary to reliably identify the presence of a trend or identify their parameters against the background of random changes (in single measurements). © 2020 IEEE.

关键词： Random processes

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Analysis of the Effect of Multiplicative Noise on the Patterns of Phased and Synthesized Antenna Arrays

Analysis of the Effect of Multiplicative Noise on the Patter...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Volovach, V.I. Artyushenko, V.M. Volga Region State University of Service Informational and Electronic Service Department Togliatty City Russia Technological University Information Technology and Management Systems Department Korolev City Russia

ISBN: (纸本)9798350397727

The influence of multiplicative noise on the directional patterns of phased and synthesized antenna arrays is analyzed. Multiplicative noise is regarded as a source of fast phase and amplitude distortion of signals received or radiated by the antenna. It is shown that multiplicative noise changes the multiplier of the array. Expressions of the directional pattern of the phased array exposed to multiplicative noise are obtained, taking into account the aperture distribution of phasing errors, as well as a generalized directional pattern of the array with phase shifters. The features of arrays with delay lines are described, and an expression for determining the directional pattern of such arrays is obtained. The features of synthesized antenna arrays are considered. The directional pattern of a focused antenna array under the influence of multiplicative noise is analyzed. Expressions for the directional pattern are obtained taking into account the time of the relative delay of signal reception relative to the central element of the array. It is shown that the obtained expressions for the phased antenna array and the array with phase shifters are also valid for synthesized antenna arrays. © 2023 IEEE.

关键词： Phase shifters

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Monitoring of RF-field Strength in the Environment by Mobile Telecommunications in the Moscow

Monitoring of RF-Field Strength in the Environment by Mobile...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Yelizarov, A.A. Ikonnikova, D.M. Katsnelson, A.I. Gromova, P.I. Ilyanova, D.S. National Research University Higher School of Economics Moscow Russia

ISBN: (纸本)9798350397727

The growing popularity and use of the wireless Internet of Things and cyber-physical systems increase the demand for "green"technologies in the field of mobile telecommunications. To be completely wireless, such devices need an integrated RF energy harvesting system that ensures efficient recharging of the batteries and accumulators used in them. This article provides an assessment of the coverage areas of mobile operators in Moscow and the Moscow region by the frequency ranges used, taking into account the power distribution. An experimental study of the RF-field strength of telecommunication equipment was carried out using a log periodic antenna (KM6-600/6000) with linear polarization and a portable spectrum analyzer with an Arinst SSA-TG R2 tracking generator. The results of attenuation of electromagnetic waves of GSM and Wi-Fi bands under various environmental conditions are obtained, which is of interest for the development of effective intelligent harvesting systems. © 2023 IEEE.

关键词： Energy harvesting

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Automation of the Learning Process of a Neural Network as Classifier in the Formation of a Design Basis of Complex Transport systems

Automation of the Learning Process of a Neural Network as Cl...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Kuznetsov, A.S. Kuznetsov, S.N. Ushkar, M.N. Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781728147727

The method of the automation of the learning process of a neural network as classifier is considered in this paper. This method is based on using the developed algorithm and programs that automatically generate training examples. For this purpose, the methodology of planning a full factorial experiment is used. The classifier is software complex, which includes: a database, a multilayer perceptron, as well as a block of programs providing automatic learning of perceptron. Application neural network as classifier with automated learning allows significantly reduce time spent on the formation of a constructive basis for complex transport systems. © 2020 IEEE.

关键词： Complex networks

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Detection of signals with a Random Moment of Occurrence Using the Cumulative Sum Algorithm

Detection of Signals with a Random Moment of Occurrence Usin...

引用

2021 systems of signals generating and processing in the field of on board communications, SOSG 2021

作者： Volovach, V.I. Artyushenko, V.M. Volga Region State University of Service Togliatty Russia Technological University Korolev Russia

ISBN: (纸本)9780738130897

A method for detecting signals with a random moment of occurrence based on the algorithm of cumulative sums with a reflecting screen under the influence of non-Gaussian noise is presented. An example of detecting a signal exposed to non-Gaussian quasi-deterministic additive noise is used for obtaining the dependences of the probability of false detection on the value of the signal-to-noise ratio for different values of the detection threshold. An increase in the detection threshold value, as well as the value of the signal-to-noise ratio, leads to a decrease in the probability of false detection. It is shown that the case of coordinated noise has the highest probability of correct detection. The algorithm for detecting a signal against the background of pulse noise and fluctuating non-Gaussian noise is analyzed and curves for probability of correct detection are obtained. It is found that the mismatch of the cumulative sum algorithm and the real density of probability distribution of noise leads to a decrease in the probability of correct detection. It is shown that the cumulative sum algorithm allows not only to solve the problem of detecting a signal in real time, but is also simple enough to be used when solving some practical problems. © 2021 IEEE.

关键词： Probability density function

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Measuring Far-field Radiation Patterns of Digital Beamforming Antenna Arrays

Measuring Far-Field Radiation Patterns of Digital Beamformin...

引用

2024 systems of signals generating and processing in the field of on board communications, SOSG 2024

作者： Djigan, V.I. Department of Integrated Circuits Design Methodology Institute for Design Problems in Microelectronics of RAS Moscow Russia

ISBN: (纸本)9798350383614

A method of the antenna array far-field Radiation Pattern (RP) measurement is considered. This method is designed for the usage with the receiving Digital Beamforming Antenna Arrays (DBAA). Such type of antenna arrays typically does not have a radiofrequency output. Hence, the standard methods of the RP measurement, based on the radiation and the reception of the monochromatic probing signal, cannot be used for the DBAA RP measurement. The proposed method assumes the radiation of a probing signal modulated by a pseudo-noise sequence and the base-band processing of the DBAA output signal by means of a matched filter or a correlator. The paper presents the description of the measurement setup and the mathematical explanation of the measuring procedure. It has been shown that the accuracy of the RP measurement depends on the Signal-to-Noise Ratio (SNR) at the outputs of the DBAA channel receivers, the number of the array channels and the number of the pseudo-noise sequence symbols. The accuracy increases on 3 dB each time as the number of the array antennas or the pseudo-noise sequence symbols is doubled. This result is confirmed by the simulation of the RP measurement of the eight and the sixteen channel linear antenna arrays with the usage of the maximum length pseudo-noise sequence of 1023 and 2047 symbols. ©2024 IEEE.

关键词： Beamforming

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Research of an Ultra-Wideband Distributed Amplifier Based on field-Effect Transistors

Research of an Ultra-Wideband Distributed Amplifier Based on...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Shmakov, N.D. Ivanyushkin, R. Yu Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728147727

The main tasks are discussed in this paper such as in the construction of transmitters of digital television broadcasting, in particular the task of constructing a universal preamplifier, which can be used regardless of any particular channel. Distributed amplifiers permit to build wide-range power amplifiers with constant gain in the preset frequency range. The main feature of the construction of distributed amplifiers is using input and output capacitances of amplifying device in the artificial transmission lines. The main advantages and disadvantages of this type of amplifiers are presented in the paper. The method of calculation of distributed amplifier for UHF and the research its energetic characteristics are discussed in the paper. The further research tasks for this type of amplifier are given. © 2020 IEEE.

关键词： Power amplifiers

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Investigation of the Possibility of Using Optical Cables in Remote Control systems Operating in Underwater Conditions

Investigation of the Possibility of Using Optical Cables in ...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Ovchinnikova, I.A. Vasiliev, E.B. Semenov, P.A. Khahichev, A.S. Koriakin, A.G. Jsc Vniikp Moscow Russia

ISBN: (纸本)9798350397727

The study considers the possibility of using optical cables in remote control systems operated in underwater conditions. The operability of the optical microcable design to a hydrostatic pressure of 10 MPa has been confirmed. In order to determine the possibility of using optical microcables in seawater, they were exposed to salt solution simulating concentrated seawater of several versions of microcables. Graphs of the dependence of the attenuation coefficient on the exposure time in water with a salinity of 380‰ are given for all types of the studied samples. Using a microscope, the appearance of the outer coating of optical microcables and the quartz surface of the light guide after prolonged exposure to salt solution was examined. Thermogravimetric analysis and thermomechanical analysis of the studied samples are *** frequency of forced Mandelstamm-Brillouin scattering (Brillouin frequency) in optical fibers of microcables was monitored. The results of the studies confirmed the possibility of using the developed microcables with dense protective coatings made of UV-cured acrylate in systems for remote control of underwater objects. © 2023 IEEE.

关键词： Optical fibers

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