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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381-390 订阅

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Algorithm for Improving of Geo- Location Accuracy in Distributed Monitoring Mobile systems of Traffic Flow Characteristics

Algorithm for Improving of Geo- Location Accuracy in Distrib...

引用

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

作者： Buslaev, D.A. Yashina, M.V. Tatashev, A.G. Susoev, N.P. PAO 'Radiophysics' Moscow Russia Moscow Technical University of Communications and Informatics Moscow Russia Moscow Automobile and Road Construction State Technical University Moscow Russia

Problems of accuracy of measurements on highway are considered. We have developed an algorithm for correlation analysis of the vehicle velocity. We have proposed an approach for measurement on highway. This approach d... 详细信息

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147727

关键词： info-communication technology traffic flow model GPS-track NMEA protocol correlation statistical analysis algorithms Flow models traffic flow characteristics Distributed monitoring positioning accuracy Freeway Correlation analysis Mobile

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Multi-Sensory Strain Measurement Using Addressed Fiber Bragg Structures in Load Sensing Bearings

Multi-Sensory Strain Measurement Using Addressed Fiber Bragg...

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

作者： T. A. Agliullin R. R. Gubaidullin A. Zh. Sakhabutdinov Kazan National Research Technical University named after A.N. Tupolev-KAI Kazan Russia

The work presents modeling results of the fiber-optic multi-sensory strain measurement system for load sensing wheel hub bearings based on the addressed fiber Bragg structures (AFBS) with two symmetrical phase shifts. The system includes six strain sensors attached to the outer ring of the bearing and one senor isolated from strain for temperature compensation. The results of the numerical modeling are presented, as well as the simulation results of a complete optoelectronic interrogation scheme, which confirm the high accuracy of the AFBS central wavelengths determination by means of the microwave-photonic interrogation approach. The proposed load-sensing bearings can be used to estimate of the loads acting on the wheels of the vehicle, which serve as input parameters for active safety systems or fully automated driving, in order to enhance their effectiveness and safety of the vehicle.

关键词： Optical fiber sensors Wheels Strain measurement Optical fiber communication Sensor systems Sensors Numerical models

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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...

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

作者： V. N. Skosyrev V. M. Nuzhdin P. V. Sokolov A. N. Kharlamov Moscow State Technical University named after N.E. Bauman (National Research University) Moscow Russia Moscow Aviation Institute (National Research University) Moscow Russia

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.

关键词： Airborne radar Interference Radar antennas Filling Broadband communication Broadband antennas Optical pulse generation

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Adaptive Compensation for Interference under Radio signals Reception by the Multibeam Antenna System

Adaptive Compensation for Interference under Radio Signals R...

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

作者： Vorontsov, A.P. Maslov, M. Yu Bosomykin, D.V. Gavrilov, A.A. Federal State Unitary Enterprise Radio Research Development Institute FSUE NIIR Moscow Russia Head of the Center Samara Branch Federal State Unitary Enterprise Radio Research Development Institute FSUE NIIR Moscow Russia

ISBN: (纸本)9781728147727

The concept of organizing interference compensation when receiving a radio signal by the multipath antenna system is considered. Methods for improving the quality of radio signal reception in a complex interference environment with the definition of a promising method for use are considered and analyzed. Schemes for constructing a dish antenna system of a compensation antenna with the development of recommendations for construction are considered and analyzed. Variants of technical solutions for creating a broadband antenna feed are considered, an analysis of the results is carried out, and proposals for further research are formulated. © 2020 IEEE.

关键词： Antenna feeders

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Algorithm for Building a Cluster for Implementing the “Memory as a Service” Service in the IoT Concept

Algorithm for Building a Cluster for Implementing the “Memo...

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

作者： D. V. Gadasin A. V. Koltsova D. D. Gadasin Moscow Technical University of Communications and Informatics Moscow Russia Tomilinskaya SES N№ 19 Moscow Russia

In the next 5 years, the total amount of data transmitted from devices is likely to exceed the limit of 160 zettabytes, which is more than 3 times higher than the current value. As the volume of information increases, the volume of traffic also increases, so the possibility of maintaining a stable network operation is seen in the further deepening of virtualization, the transition from cloud to foggy computing and dew computing. The introduction of fog computing technology leads to changes in the algorithms of information transmission, processing and storage technologies, which allows users to receive new types of services at a new level, and the main scope of fog computing technology is the Internet of things. This paper examines the issues of building a cluster model designed for one of the types of boundary computing - the concept of dew computing. It involves user interaction with an electronic device, including the emergence of a new concept based on the emergence of an environment in which it is possible to lease memory on a device owned by another user-memory as a service.

关键词： Road transportation Cloud computing Spirals Computational modeling Real-time systems Trajectory Internet of Things

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Features of Capacity of Communication Channel with APSK-N signals, which Implements the Theory of Resolution Time

Features of Capacity of Communication Channel with APSK-N si...

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

作者： Lerner, I.M. Manerov, M.A. Fayzullin, R.R. Chernyvskii, S.M. Il'in, V.I. Kazan National Research Technical University N.a. A.N. Tupolev - KAI Kazan Russia Kazan Volga Region Federal University Kazan Russia

ISBN: (数字)9781728147727

ISBN: (纸本)9781728147727

The paper analyzes the features that arise in the process of information transmition using a multi-position amplitude-phase-shift signal with N discrete states through a nonparametric, frequency-selective communication channel with intersymbol interference. We consider a class of channels utilizing the theory of resolution time. The greatest attention is paid to a study of properties of 'transparency windows' in the presence of adverse factors such as frequency detuning and envelope and phase measurement errors introduced by the receiving device. Due to the obtained results recommendations are made to increase the speed in such communication channels. © 2020 IEEE.

关键词： Phase shift keying

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

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

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.

关键词： Additive noise Additives Real-time systems Probability distribution Signal detection Signal to noise ratio

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The Research of Digital Antenna Arrays with Directive Radiators for Interference and Noise Cancellation in Azimuth and Elevation

The Research of Digital Antenna Arrays with Directive Radiat...

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

作者： I. W. Peshkov I. N. Zaitseva N. A. Fortunova Yu. B. Nechaev Bunin Yelets State University Yelets Russia Voronezh State University Voronezh Russia

In the paper the problem of applying the digital antenna arrays (DAA) equipped with the directional radiators is considered simultaneously on azimuth and elevation planes. The method MUSIC of direction-of-arrival (DOA) estimation is researched depending on the shape of the antenna array and the directivity of an individual element. The half-dodecahedron, planar and cylindrical antenna arrays are considered. As it is well known along with DOA-estimation as the first step the beamforming is highly needed at the final stage of the digital arrays functionality. The optimal algorithm of maximizing the ratio of the useful signal to interference + noise (SNIR) is researched in the tasks of the radiation pattern formation simultaneously on azimuth and elevation planes. The estimations of the signal to noise and interference ratio as well as bit error rate (BER) are obtained depending on the directivity of the emitters. The research has established that the shape of the radiation pattern of elements has a significant impact on both the accuracy of bearings and placing the main lobe and zeros. The curves are provided showing the optimal performance of DAA on azimuth and elevation planes.

关键词： field emitter arrays Array signal processing Azimuth Shape Bit error rate Estimation Interference

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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...

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

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

ISBN: (纸本)9781665415484;9781665446983

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.

关键词： Distributed amplifiers Capacitance-voltage characteristics Nonlinear distortion Current-voltage characteristics Power amplifiers Hafnium Capacitance

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Blockchain Models to Improve the Service Security on board communications

Blockchain Models to Improve the Service Security on Board C...

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

作者： Vladyko, A.G. Spirkina, A.V. Elagin, V.S. Belozertsev, I.A. Aptrieva, E.A. Bonch-Bruevich Saint-Petersburg State University of Telecommunications Saint Petersburg Russia

ISBN: (纸本)9781728147727

The present article introduces a definition of Blockchain, describes services implemented by this technology and the field of its application. The authors identify the main technical characteristics and their features associated with data transmission through the network. This article provides the operation principles of Blockchain technology and a block structure. The authors determine the network scheme working with blockchain transactions and the dependence of network characteristics on application parameters. The security aspects of data transmission within Blockchain technology are analyzed as well. The types of network attacks and Blockchain devices are listed in the article. In addition, the authors propose a Blockchain traffic identification model that allows discrediting the existing security mechanisms of this technology and makes services vulnerable to these attacks. Furthermore, the article offers recommendations on hiding the Blockchain traffic profile, which will significantly complicate its identification on the data network. © 2020 IEEE.

关键词： Blockchain

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