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检索条件"任意字段=2018 Systems of Signals Generating and Processing in the Field of on Board Communications"

共 514 条记录，以下是431-440 订阅

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Spectral Efficiency of Fiber - Optic systems Modifying Conception Advance

Spectral Efficiency of Fiber - Optic Systems Modifying Conce...

引用

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

作者： Korshunov, V. N. Ovchinnikova, I. A. Shavrin, S. S. Shishova, N. A. Tsym, Alexander Y. Moscow Tech Univ Commun & Informat Moscow Russia RRDI Cable Ind Moscow Russia FSUI ZNIIS Moscow Russia

ISBN: (纸本)9781728106069

Spectral efficiency of the optical fiber within the cable construction signal transmission is being analyzed. Spectral efficiency modifying variety formed by bit/baud rate and frequency/wavelength spectrum bandwidth pairwise combining are being expanded to spatial multiplexing. Spatial - spectral efficiency category and parameter are proposed. Baud-wavelength efficiency parameter implementation is being discussed. Analytic equations are derived for signal transmission rate calculations using spectral efficiency parameter as input data. Signal transmission rate calculation examples are presented.

关键词： fiber-optic data transfer system signal transmission rate spectral efficiency spatial-spectral efficiency baud-wavelength efficiency

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Network Characteristics of Blockchain Technology of on board Communication

Network Characteristics of Blockchain Technology of on Board...

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

作者： Goldstein, A. B. Sokolov, N. A. Elagin, V. S. Onufrienko, A., V Belozertsev, I. A. Bonch Bruevich St Petersburg State Univ Telecommu St Petersburg Russia

ISBN: (纸本)9781728106069

Due to the increased popularity of distributed registry technology applications on the Internet, each of which uses network resources in different ways, has different characteristics and service requirements, there are the problem of impact of this technology to the network characteristics and how does the technology affect the network. In this article, the authors introduce a definition of the term blockchain, describe the services implemented by this technology and its scope. The authors identify the main technical characteristics and their features associated with transfer of information through the network. The authors explain how does the blockchain technology work and block structure. The authors indicate basic features of the network required for guarantee quality of service during provision and transfer for different type of traffic, determine the network scheme working with blockchain transactions and the dependence of network characteristics on application parameters. Authors show different classes of traffic priority, based on the requirements and behavior of certain types of applications, allowing maximum flexibility in the transmission of user information.

关键词： Blockchain QoS Quality of service Distributed registry

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Analysis of Speed Disturbances in Empirical Single Vehicle Probe Data before Traffic Breakdown

Analysis of Speed Disturbances in Empirical Single Vehicle P...

引用

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

作者： Molzahn, S-E Rehborn, H. Koller, M. Kerner, B. S. Klenov, S. L. Daimler AG HPC X901 D-71063 Sindelfingen Germany Univ Duisburg Essen Lotharstr 1 D-47057 Duisburg Germany Moscow Inst Phys & Technol Moscow Russia

ISBN: (纸本)9781728106069

In single vehicle probe data measured on German freeways we have revealed phase transitions from free flow to synchronized flow and back to free flow that occur before traffic breakdown at a bottleneck occurs. Thus resulting in the formation of a congested pattern. Empirical findings of these phase transitions confirm a microscopic stochastic theory of traffic breakdown developed by Kerner. Only because of the recently introduced possibility of gathering larger amounts of anonymized vehicle data - including a sequence of positions of each car - we were able to show the phenomenon of these phase transitions in measured floating car data. This contribution reveals empirical findings in microscopic data which support and prove some of the recent theoretical findings of the nature of traffic breakdown.

关键词： Kerner's three phase traffic theory traffic breakdown intelegent transportation systems

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Modeling for Environmental Pollution Parameters Monitoring System

Modeling for Environmental Pollution Parameters Monitoring S...

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2019 systems of signals generating and processing in the field of on board communications, SOSG 2019

作者： Smirnov, N.I. Melnik, S.V. Antonnikov, D.O. Moscow Technical University of Communications and Informatics Moscow Russia Department Federal State Unitary Enterprise Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728106069

Modeling for Monitoring environmental parameters using a computer information measuring system are proposed. For this system it is very important to have imitation model. This model can shown all features of the future design *** of the impurity concentration in the aqueous medium by a direct method using ion-selective electrodes have been carried out. The verification of the correctness of the results was done by the method of additives, that is, by measuring the known concentration of the component against the background of an unknown part of it in the test solution. © 2019 IEEE.

关键词： Information systems

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Testing, Verification and Validation of Distributed Ledger systems

Testing, Verification and Validation of Distributed Ledger S...

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

作者： K. N. Pankov Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147734

Improving the quality of software that implements distributed ledger systems based on blockchain technology is an urgent task for the transport industry. In this article, we will look at tools to improve quality such as testing, validation, and validation. The paper lists a number of existing tools for testing and verifying blockchain systems and smart contracts, and also identifies the problem of the lack of an appropriate normative base and standards in this area.

关键词： Industries Distributed ledger Standards organizations Blockchain Tools Task analysis Testing

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A Noise Immunity Estimation of the Gold Sequence Ensembles Fast Delay Acquisition Devices

A Noise Immunity Estimation of the Gold Sequence Ensembles F...

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

作者： Mikhaylov, V. Y. Mazepa, R. B. Natl Res Univ Moscow Aviat Inst Moscow Russia

ISBN: (纸本)9781728106069

Object of consideration - asynchronous-address systems, using code division of channels. A subject of the analysis - the quasi-orthogonal signals ensembles based on the Gold sequences providing reliable division of channels at influence of imitation interference, signal-like noises and devices of their processing. The purpose of the analysis is to optimize the structure of the Gold sequences ensemble and to estimate the noise immunity characteristics of the delay acquisition devices. The solution is based on the principles and mathematical models developed by authors: the principle of the fast conversions in Galois fields, algebraic model of representation and structure of fast delay acquisition devices for a subclass of the sequences based on the Gold sequences. This article is devoted to create of models to mapping the original Gold sequences in the aggregate of short M-sequences, searching for conditions for their joint adaptive processing, as well as evaluating the characteristics of the decision making reliability. Key features of the described method of processing are implementation of correlation reception of set of synchronized short sequences samples having identical structure with accumulation of symbols from multiple copies of short sequences received from initial Gold sequence. It is shown that the proposed mapping models, together with offered delay acquisition devices, provide a high level of device adaptation to changes in the signal structure over a wide range. The offered versions of the scheme of delay acquisition carry out reception and preprocessing of code sequences in real time that favorably distinguishes them from the known schemes, which are carrying out fast conversions by other methods. Presented results will be useful to the specialists who are engaged in design of the asynchronous-address systems using aggregate signals with large base and changeable structure for ensuring protection against influence of signal-like noises.

关键词： asynchronous-address systems structural redundancy delay acquisition quasiorthogonal signals ensembles Gold sequences Galois fields fast conversions

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Simulation-Based Prediction of 100-μm-Core Multimode Optical Fiber Bandwidth for 10GBase-LX systems

Simulation-Based Prediction of 100-μm-Core Multimode Optica...

引用

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

作者： Bourdine, A., V Burdin, V. A. Zhukov, A. E. Singh, Ghanshyam Janyani, Vijay PSUTI Samara Russia Malaviya Natl Inst Technol Jaipur Jaipur Rajasthan India

ISBN: (纸本)9781728106069

This work is concerned with application of earlier on developed an alternative method for simulation of piecewise regular multimode fiber optic links operating in a few-mode regime for computation of laser-excited optical pulse dynamics during its propagation over irregular silica graded-index multimode optical fibers (MMFs) with extremely large core diameter. Proposed model is based on the piecewise regular representation, and it takes into account launching conditions, differential mode delay, both lower-and higher-order mode chromatic dispersion, differential mode attenuation, mode mixing and power diffusion occurring due to real fiber irregularity and micro- and macro-bends. We present some results of simulation 10GBase-LX optical signal transmission over 100-mu m-core MMFs graded-index refractive index profile corresponding to the typical laser-optimized MMFs 50/125 of ISO/IEC Cat. OM2+/OM3 scaled up to 100 mu m core.

关键词： laser-based multi-Gigabit data transmission large core multimode optical fiber few-mode regime higher-order modes differential mode delay mode coupling on-board cable systems industrial networks

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Some Generalization of the Theory of generating Functions

Some Generalization of the Theory of Generating Functions

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

作者： I. V. Chernova Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147734

The author invites readers to consider some very unusual methods of calculations that he performed while solving the problem of analytic continuation of the Riemann function containing the critical strip inside of which there is an infinite set of nontrivial zeros of function by B. Rieman's hypothesis. Similar methods are used by the author when studying the properties of the generating function of Hermite polynomials with a nonnegative integer exponent.

关键词： generating function generalized summation of rows analytic continuation critical band the Riemann function ? (s) generating functions critical band infinite set RIEMANN FUNCTION Hermite polynomials

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Fractional Power Spectrums in Diagnostics of On-board Electronic Equipment of Monitoring, Measuring and Temperature Regulating systems

Fractional Power Spectrums in Diagnostics of On-Board Electr...

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

作者： V. V. Afanasiev S. S. Loginov Kazan National Research Technical University named after A. N. Tupolev - KAI Kazan Russia

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147734

In this work, the development and research of the method and means of technical diagnostics of electronic equipment of the on-board monitoring, measuring and regulating temperature systems with thermocouple sensors according to fractional power spectra of signals were performed. The physical processes that cause typical malfunctions of low-frequency onboard electronic equipment with thermocouple sensors are investigated. Peculiarities of non-harmonic spectral analysis of signals and diagnostics of low-frequency electronic equipment of on-board systems for monitoring, measuring and regulating temperatures systems by fractional power spectra of signals are considered.

关键词： technical diagnostics generalized spectral analysis fractional power spectrum electronic equipment power spectra signal spectrum signals Diagnosis Spectra Physical Processes Thermocouple Temperature

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Methods of Laboratory Testing of Radiometrics of Space Monitoring systems for Mobile Objects

Methods of Laboratory Testing of Radiometrics of Space Monit...

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

作者： V. V. Ionov A. V. Pestryakov Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147734

This article proposes a methodology for verifying the operability and compliance with regulatory documents of radio beacon of the space monitoring system of moving objects Argos. This technique is based on many years of experience in the development of such radio beacon. In addition, the graphs necessary for the analysis of the output signal are presented, among them the graphs of phase change, power and spectral characteristics, etc.

关键词： radio beacon space monitoring Argos laboratory tests methodology Radio beacons laboratory procedure space monitor monitoring systems outgoing signal methodology

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