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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"

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Modeling the Algorithm of Cumulative Sums in the Applied Problems of Detecting the signals with Random Time of Occurrence in non-Gaussian Noise

Modeling the Algorithm of Cumulative Sums in the Applied Pro...

引用

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

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

ISBN: (纸本)9780738130897

The methods of mathematical modeling of the cumulative sums algorithm in the problems of detecting signals with a random moment of occurrence in non-Gaussian noise are considered. The probability of false alarm errors and correct detection of imbalance based on the statistical characteristics of the algorithm of cumulative sums obtained by modeling real processes is calculated. An experimental distribution of the cumulative sum in state of imbalance at a current step for detection without reflecting or absorbing screens is obtained. A linear dependence between the means of the cumulative sum taken in separate sections is determined. Based on modeling real processes, the probability of correct detection and false alarm under the influence of non-Gaussian noise with a bimodal distribution is calculated. Effectiveness of cumulative sums algorithm both consistent and inconsistent with the density of the probability distribution of influencing noise is compared. © 2021 IEEE.

关键词： Signal detection

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Connected Vehicle Remote Diagnostic System

Connected Vehicle Remote Diagnostic System

引用

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

作者： Maksimychev, O.I. Matiukhina, E.N. Ostroukh, A.V. Vasiliev, Y.E. Moscow Russia

ISBN: (纸本)9780738130897

The article proposes a Connected Vehicle Remote Diagnostic System, designed for operational monitoring of the technical parameters of the vehicles systems in real time, from anywhere with a connection. This function is achieved by the fact that the data collection and transmission equipment is equipped with an adapter for monitoring the technical and operational parameters of vehicles and transmitting these parameters to the terminal device for subsequent sending to the telematic server, the adapter is connected to the CAN buses through the diagnostic connector in the vehicle and is coordinated with them on the software and hardware level. The system is designed to remotely communicate with owners and maintenance personnel to vehicle and provide vehicle warnings and information, including location, performance and service data, to make decisions about where and how the vehicle is used. The system provides critical system readings of temperature and pressure for specific vehicle functions, including hydraulic, transmission and cooling systems. © 2021 IEEE.

关键词： Real time systems

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Methodology for Evaluating the Probability of Communication Disconnection in Radio Channels of the systems with Space-Time Coding of Signal

Methodology for Evaluating the Probability of Communication ...

引用

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

作者： Samoylov, A.G. Al Tahar, I.A. Vladimir State University Named after Alexander and Nikolai Stoletovs Vladimir Russia

ISBN: (纸本)9780738130897

The paper presents a methodology for assessing the probability of communication disruptions in one beam of a radio communication system operating on the technology of space-time coding of signals. Expressions are given for an accurate and for an approximate estimate of the probability of communication disruptions in radio channels with multipath and signal fading. Long-term experimental studies of signal fading on a long-range tropospheric radio link have been carried out. It has been experimentally proven that the Rayleigh description of interference fading in multipath propagation of signals is observed in 60% of the time of communication sessions. For the rest of the communication sessions, other laws of probability distribution are observed. It is confirmed that they, together with Rayleigh's description of fading, are special cases of the four-parameter law of probability distribution. Convenient for practical use formulas are obtained for estimating the noise immunity of a communication channel. The graphs of the dependence of the probability of communication failure on the ratio of the average received signal power and the threshold level of the receiver signal are given. © 2021 IEEE.

关键词： Probability distributions

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Comparison of Energy Metrics and Levels of Passive Interference for UWB Radars with Radio and Video Pulse Probing signals

Comparison of Energy Metrics and Levels of Passive Interfere...

引用

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

作者： Skosyrev, V.N. Nuzhdin, V.M. Sokolov, P.V. Kharlamov, A.N. Moscow Russia Moscow Russia

ISBN: (纸本)9780738130897

signals properties comparative analysis is carried out for ultra-wideband pulse radar probing signals, which have equal spatial resolution and duration, but differ by presence or absence of high frequency filling. The broadband factor is used, defined as the relation of the probing signal bandwidth to its spectrum average frequency. Signal-to-noise and signal-to-passive interference ratios dependences on the broadband coefficient are obtained. It is shown that for the same antenna system aperture, dimensions and radiation power, the signal-to-noise ratio in a radar with a radio-pulse probing signal will be higher. That benefit is inversely proportional to the broadband factor square. Assuming that the passive interference level is proportional to the selection element area, its estimation is obtained. It is shown that when the spectral bands of ultrashort video and radio pulse probing signals are equal, the pulse with high-frequency filling has an advantage, in terms of the considered parameters. © 2021 IEEE.

关键词： Signal to noise ratio

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Modeling of Nonlinear Distortions in 5G NR systems

Modeling of Nonlinear Distortions in 5G NR Systems

引用

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

作者： Kulygin, S.V. Kazachkov, V.O. Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9780738130897

Due to the peculiarities of the physical level of 5G NR (Fifth Generation New Radio) systems, nonlinear distortion of the amplifying path is one of the main negative affecting on the signal. Existing mathematical models of amplifier nonlinearities in the context of their application in the simulation of fifth-generation signals require adaptation. The work proposes the coefficients for nonlinear distortion of power amplifiers for Saleh and Ghorbani models. Based on the simulation model developed in MA TLAB, the spectral characteristics of the simulated processes of nonlinear distortion, amplitude-amplitude and amplitude-phase distortions, as well as the effect of nonlinearity on the noise immunity of the system (the dependence of the bit error rate (BER) from the signal-to-noise ratio (SNR)) for the 5G NR signal of the second numerology (200 MHz signal bandwidth) for all types of modulation supported by the standard on sub carrier frequencies (QPSK, 16QAM, 64QAM, 256QAM) are studied. © 2021 IEEE.

关键词： Bit error rate

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Research of the Influence of Nonlinearity of Capacitance-Voltage Characteristics of field-Effect Transistors on Nonlinear Distortions in Distributed Amplifiers

Research of the Influence of Nonlinearity of Capacitance-Vol...

引用

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

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

ISBN: (纸本)9780738130897

The model of distributed power amplifier, built on field-effect transistors of model MRF 9045, is presented. AM -AM characteristic and AM - PM characteristic investigated on the basis of this amplifier circuit are presented. The construction of a distributed power amplifier circuit for simplified modeling of parametric nonlinear distortion is discussed. Simplified models of this type of amplifiers for the HF and UHF ranges are given. In a simplified model for the HF range, the parametric capacitances are built on the basis of the capacitance-voltage characteristics on the field-effect transistor of model BLF 278. In the simplified model for the UHF range, the parametric capacitances are built on the basis of the capacitance-voltage characteristics on the field-effect transistor of model MRF 9045. The features of constructing a simplified model of a distributed gain amplifier are discussed. On the basis of simplified models of parametric nonlinear distortion amplifiers, several cases of the influence of parametric capacitances are investigated such as: the influence of the input parametric capacitance, as well as the influence of the output parametric capacitance. The result of the research is the amplitude and phase-amplitude characteristics. The reasons for parametric nonlinear distortions and methods of their linearization are discussed. Further research tasks are presented. © 2021 IEEE.

关键词： Power amplifiers

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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...

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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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Evaluation Methodology of Distribution of Vehicle Lane-change Probabilities on Multilane Road before Crossroad

Evaluation Methodology of Distribution of Vehicle Lane-chang...

引用

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

作者： Yashina, M.V. Tatashev, A.G. Pospelov, P.I. Duc Long, Le Susoev, N.P. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9780738130897

We have developed a methodology that allows to develop recommendations for choosing a place to start lane changing with the intention to make a turn at a crossroad and choosing the duration of traffic light phases, and these durations may vary depending on the time of day. This methodology could be made on the basis of field measurements and a mathematical model of the traffic flow on a section of a multi-lane highway. There are actual to use Smart Light in ITS to control traffic on crossroads and to optimize the choice of traffic light phase durations. The developed model allows to calculate the distribution of traffic intensities on a section of a multi-lane highway. To verify and calibrate the model the distribution of traffic intensities has been calculated for a section of Leningradsky prospect, Moscow. The results of these measurements were compared with data obtained in measurements on the section. The model is based on the deterministic-stochastic control for traffic modeling in accordance of that the traffic flow is represented as the sum of the deterministic and stochastic components. The deterministic component corresponds to the velocity of a lattice movement, and the stochastic component corresponds to the velocity of the average particle movement. Using the deterministic-stochastic approach, we can obtain more exact evaluations of traffic characteristics. © 2021 IEEE.

关键词： Stochastic systems

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Comparison of the Spectral and Hierarchy Analysis Methods Applicability for Technical systems Choosing

Comparison of the Spectral and Hierarchy Analysis Methods Ap...

引用

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

作者： Dokuchaev, V.A. Maklachkova, V.V. Pavlov, S.V. Mytenkov, S.S. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9780738130897

This article discusses the fundamental features of the application of the decision support system on the example of solving the problem of planning the process of managing technical systems of wireless access to Enterprise Infocommunication Network. The purpose of this article is to consider approaches to the automatic selection of the optimal technical solution for promising business and technological process management systems based on the methods of spectral analysis and analysis of hierarchies. The system analysis technique is developed and applied if the decision-maker does not have the necessary information about a certain situation, allowing it to formalize and find a solution to the problem. Decision-making in management activities is based on a specific type of intellectual activity - information and analytical activities, as a set of activities for the search, collection, processing of information, its assessment, analysis and forecasting of the state of the control object. The importance of information and analytical activities in modern conditions is sharply increasing due to the following reasons: a sharp increase in the volume of information processed in the course of decision-making on management;the difficulty of identifying and establishing cause-and-effect relationships in information about the existing area of management;the complexity of process automation in advanced business and technological process management systems. This necessitates the creation within the framework of a promising automated control system of its specific part - a decision support system. The proposed method of Spectral Analysis Method and the Hierarchy Analysis Method of automatic selection of the optimal technical solution for promising control systems allows automating the process of evaluating the effectiveness and choosing the optimal technical system, in particular, choosing the most optimal means of wireless access to the corporate infocommunication network. © 2021 I

关键词： Decision support systems

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Modeling and Comparison of Trajectory Filtering Algorithms in MLAT systems

Modeling and Comparison of Trajectory Filtering Algorithms i...

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

作者： Chugunov, A.A. Kulikov, R.S. Pudlovskiy, V.B. Petukhov, N.I. Masalkova, N.V. National Research University Mpei Moscow Russia

ISBN: (纸本)9780738130897

In this article, an algorithm for determining RRS coordinates on the basis of Extended Kalman Filter with the processing of Time of Arrival (ToA) type measurements is proposed. The feature of the proposed algorithm is to determine the radio radiation source (RRS) time of transmission (ToT) in the MLAT system time scale and its filtration using priori information about the period of transmission. It's shown that evaluation of ToT and its filtration at a known period allows you to get closer to the accuracy provided by Time Of Fligth (ToF) method, which can not be implemented directly for MLAT systems. This hypothesis was confirmed by modeling several algorithms: one-step TDoA, filtered TDoA, filtered ToA and one-step ToF. Modeling was performed for both the known constant period and the non constant period. In both cases, the efficiency of the proposed ToA-F algorithm was the same. The efficiency of various algorithms was compared, including the traditional ones based on the calculation of arrival time differences and the proposed one based on ToA observations and using information about transmission period. The most important result was that the ToT estimation and filtering allows to achieve the properties of the ToF method in the MLAT system. © 2021 IEEE.

关键词： Extended Kalman filters

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