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

共 238 条记录，以下是51-60 订阅

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A Narrow-Band Interference Compensation Device Based on a Digital Filter Bank for Broadband Low-Energy HF Radio Lines

A Narrow-Band Interference Compensation Device Based on a Di...

引用

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

作者： Lobov, E. M. Shubin, D. N. Moscow Russia ? Moscow Russia

ISBN: (纸本)9781728106069

The article presents a device for narrowband interference compensation on the basis of a bank of digital filters for broadband low-energy HF radio links. An analytical comparison is made of the effectiveness of signal reception algorithms in the presence of narrowband interference. The algorithm of optimal reception with the normalization of the power spectral density and the algorithm of reception with the rejection of the part of the spectrum affected by interference are compared. An algorithm and a device based on a bank of digital filters are proposed, ensuring the normalization of the power spectral density in accordance with the optimal reception algorithm. The results of the simulation and field experiment on the processing of wideband signals in the presence of interference with the help of the developed program module for the normalization of the spectral power density are presented.

关键词： wideband signals HF radio ionosphere digital filter banks narrowband interference performance

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On board communications: systems of signals processing and radiofrequency applications

On board communications: systems of signals processing and r...

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

作者： Dymkova, S.S. Varlamov, Oleg V. Vienna Austria Moscow Technical University of Communications and Informatics Moscow Russia Institute of Radio and Information Systems Vienna Austria

ISBN: (纸本)9798350383614

The article discusses the main topics and results of the scientific conference "systems of signals generating and processing in the field of on board communications", in which leading industry experts annually exchange experience in the areas of: antennas and radio waves propagation, navigation and mathematical algorithms of an object Space orientation, radiofrequency applications, wire and optical communication and control systems, intelligent transport systems and digital signal processing in on-board radio systems. ©2024 IEEE.

关键词： Intelligent systems

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External electromagnetic fields influence upon moving objects

External electromagnetic fields influence upon moving object...

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

作者： Sokolov, Stanislav A. Zubilevich, Alexander L. Morozov, Boris N. Moscow Tech Univ Commun & Informat Moscow Russia

ISBN: (纸本)9781538656235;9781538656228

Number of moving objects (satellites, aircrafts, trains, vehicles and so on) rises continuously in the space at earth surface and nearby. This space is filled by radiation and electromagnetic fields of natural and artificial sources. The external electromagnetic fields have an influence upon communication equipment and instruments of moving objects, that can to pose severe hazard to them. The most troubles are brought by lightning discharges, that are source of current, fields, x- and gamma-emission. In this paper there are some aspects of possible impacts considering.

关键词： Electromagnetic field lightning moving object gamma emission polarization plane rotating

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The Study of Probabilistic Characteristics of Cyclo-Stationary APSK-N-signals Caused by Communication Channel with Memory

The Study of Probabilistic Characteristics of Cyclo-Stationa...

引用

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

作者： Odintsov, V. L. Lerner, I. M. Fayzullin, R. R. Il'in, V. I. Kazan Natl Res Tech Univ Kazan Russia Kazan Fed Univ Kazan Russia

ISBN: (纸本)9781728106069

New properties of communication channel with intersymbol interference utilizing by APSK-N-signals are investigated. Based on estimates of the symbol error rate caused by intersymbol interference, the possibility of increasing the data transmission rate in the channel due to "transparency windows" is estimated. New properties have been identified that allow a significant increase in the efficiency of such communication channels.

关键词： ISI channel with memory cyclo-stationary process SER

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Direct Digital Synthesizers of Complex Broadband signals

Direct Digital Synthesizers of Complex Broadband Signals

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

作者： Ryabov, I., V Strelnikov, I., V Tolmachev, S., V Kljuzhev, E. S. Volga State Univ Technol Yoshkar Ola Russia

ISBN: (纸本)9781728106069

Principles of design and structural-schematic schemes of direct digital synthesizers, based on the direct digital frequency and signal synthesis method are presented. The block diagrams of direct digital synthesizers based on digital code accumulators and with an M-shaped frequency variation law are given. DDS allow synthesizing signals with amplitude, frequency and phase modulation in the frequency range from 0.001 to 400 MHz.

关键词： direct digital synthesis direct digital synthesizers digital frequency synthesizers DAC low-pass filter function generator code-sine digital frequency accumulator digital phase accumulator level of amplitude noises phase noise

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A Numerical Method for Potential Capacity Estimating of Communication Channel with Memory and Cyclo Stationary PSK-N-signals

A Numerical Method for Potential Capacity Estimating of Comm...

引用

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

作者： Lerner, I. M. Odintsov, V. L. Il'in, V. I. Kazan Natl Res Tech Univ KAI Kazan Russia Kazan Fed Univ Kazan Russia

ISBN: (纸本)9781728106069

The paper presents the methodological aspects of numerical method for capacity estimating for channels with memory caused by its frequency selectivity, when a multipositional phase shift keyed signal is used as a signal. The capacity estimations were made for such communication channels with the most common amplitude-frequency responses. The effects on capacity of such adverse factors as frequency detuning and measurement errors of the phase, as well as the effect of the squelch subsystem presented in the receiver, are estimated.

关键词： ISI channel with memory cyclo-stationary process capacity

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Practical Aspects of Increasing the Spectral Efficiency of PSK-n-signals Due to Intersymbol Symbol Interference

Practical Aspects of Increasing the Spectral Efficiency of P...

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

作者： Lerner, I. M. Il'in, G. I. Fayizullin, R. R. Il'in, V. I. Kazan Natl Res Tech Univ Inst Radioelect & Telecommun Kazan Russia Kazan Fed Univ Automot Equipment Kazan Russia

ISBN: (纸本)9781538656235;9781538656228

The paper considers some practical aspects arising from the use of "transparency windows" (range of symbol time durations of information sequence when error probability per symbol due to intersymbol distortion is zero) to increase spectral efficiency in radio communication systems using multiposition phase-shift keyed signals with n discrete states. The functioning of communication systems was analyzed in the presence of frequency detuning and error produced by phase meter for various amplitude-frequency responses of a linear radio path. The admissible operating conditions and gains in information transfer rate of such systems are determined.

关键词： ISI PSK-n-signals gain in information rate spectral efficiency

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Spectral processing and Detection of Optical signals in systems for Multicriteria Control of Physical and Physicochemical Processes

Spectral Processing and Detection of Optical Signals in Syst...

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2022 systems of signals generating and processing in the field of on board communications, SOSG 2022

作者： Vaganov, M.A. Kazakov, V.I. Moskaletz, O.D. St. Petersburg Russia

ISBN: (纸本)9781665406352

Based on the methods of optical spectroscopy a new principle of generating error signals in systems for multicriteria control is proposed. These systems are intended for control of processes that are accompanied by emission of electromagnetic radiation in the optical range. Instead of traditional measuring devices using a multichannel optical spectrometer and a diffraction spectral device with a fiber-optic transmission system (FOTS) of analyzed signals to generate error signals is proposed. An analysis of the formation of error signals based on spectral processing and detection of optical signals by the considered spectral devices is given. Spectral processing in these devices can be described in matrix form, and devices itself can be determined as multidimensional linear systems. © 2022 IEEE.

关键词： Linear systems

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A set of Laboratory Works on the Study of Modulated signals of Modern Telecommunication systems

A set of Laboratory Works on the Study of Modulated Signals ...

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2022 systems of signals generating and processing in the field of on board communications, SOSG 2022

作者： Dinges, S.I. Pestryakov, A.V. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781665406352

Vector is the application programs complex developed by the Moscow Technical University of communications and Informatics (MTUCI). It includes programs of the modulated signals vector synthesis named "Vector-VSG"and "Vector-VSA"which is aimed at the vector analysis of modern telecommunication system signals, testing of individual functional nodes, radio frequency blocks, and devices in general. The programs have a similar interface and the same principles of organization and execution. As a result of the "Vector"package development, a description of nine laboratory research performed by students using the Vector signal synthesis and analysis software package was developed. © 2022 IEEE.

关键词： Signal analysis

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Challenges for Russian Ecosystem of Higher Education for On board communications

Challenges for Russian Ecosystem of Higher Education for On ...

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

作者： Kapterev, A., I Romashkova, O. N. Moscow State Linguist Univ Informat Sci Inst Moscow Russia

ISBN: (纸本)9781728106069

The importance of challenges has been recognized by certain part of education professionals in Russia in the last 25 years. But only few years ago the structural shaping the management of professionalization for on board communications in line with the global trends had been commenced. The new social and economic environment demands a drastic change in the teaching process, introducing new standards and approaches for the quality measuring criteria to be introduced to meet the requirements of effective activity and demands of on board communications' employers. This is why the working out and introducing the vocational standards has become the basic instrument to adjust the employers' demands and opportunities of high education Institute (HEI). This mainstream direction of activity is considered to be a priority and basic line for the state program documents defining the guideline policy for science and education development. The concept of modernizing the vocational education should cover mechanisms for the realization of social functions, educational institutions, taking into account the global, federal and regional external trends. In compliance with these priorities we believe it is necessary to focus on the following aspects: (a) factors of social and professional background;(b) system factors;(c) principles of professional education's modernization;(d) methods of professional education's modernization;(e) the potential risks.

关键词： Education ecosystem On board communications Bologna process governance of professional and intellectual potential high education Institute quality management in education ecosystem measuring criteria of professionalization

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