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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181-190 订阅

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Nonlinear Distortions Compensation of Amplitude Phase Shift Keying signals with Different Orders in Communication Channels

Nonlinear Distortions Compensation of Amplitude Phase Shift ...

引用

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

作者： Gadzhieva, Z.B. Kazakov, G.N. Bauman Moscow State Technical University National Research University Moscow Russia Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781665406352

This paper is dedicated to solving the task of linearization an amplified tract in order to reduce the nonlinear distortions level of amplitude phase shift keying signals with different orders. Wiener model was used as power amplifier (PA). Digital predistortion method based on a memory polynomial model was used as a linearization method. The studies were carried out in MATLAB/Simulink visual programming environment. Evaluation of the efficiency of the realized compensation algorithm was based on the following parameters: Adjacent Channel Power Ratio (ACPR), Error Vector Magnitude (EVM), Amplitude Modulation/Amplitude Modulation (AM/AM) and Amplitude Modulation/Phase Modulation (AM/PM) characteristics, Bit Error Rate (BER) dependence on bit signal-to-noise ratio (SNR). Thanks to the inclusion of Digital Predistorter (DPD) in the channel, we were able to achieve significant improvements in all parameters for each modulation case. © 2022 IEEE.

关键词： Power amplifiers

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

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

ISBN: (纸本)9781728147727

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. © 2020 IEEE.

关键词： Monitoring

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Features of Data Exchange of Highly Automated Public Transport with a Control System

Features of Data Exchange of Highly Automated Public Transpo...

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

作者： Kudryavtsev, A.A. Voronov, P.O. Vlasov, V.M. Moscow Russia

ISBN: (纸本)9781665406352

The article presents the interim results of a study of forming the functional architecture of the dispatching control system for public transport with the advent of highly automated public transport. In particular, the issue of the composition of information protocols for data exchange between a vehicle and a dispatching system were investigated. The first section analyzes and synthesizes the capabilities of modern dispatch control systems in the context of the main control systems based on open sources of information. The second section analyzes the applicability of the SAE classification to route passenger transport, taking into account the specifics of public transport operations. In the third section, the possibilities of modern automated dispatch control systems (ADCS) to switch to automatic control are considered. In the fourth section, the material presented in the first three paragraphs is used to form a list of dispatching commands, develop their format, as well as the mode of exchanging information messages between a vehicle at various levels of automation and application programs of an automated dispatching system. © 2022 IEEE.

关键词： Control systems

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On the Parameters of Algebraic Geometric Codes Designed to Construct a Post-Quantum Algorithm for Ensuring Information Security of On-board systems

On the Parameters of Algebraic Geometric Codes Designed to C...

引用

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

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

ISBN: (纸本)9798350383614

This article clarifies the parameters of a quantum-resistant algorithm based on AG codes. This algorithm was proposed in previous works by the authors to counter the quantum threat when designing various on-board systems. The article describes the procedure for quickly decoding the corresponding codes, estimates the key length and the probability of applying one of the existing attacks to such algorithms. This work can be useful for increasing the security of arbitrary Internet of Things systems.. ©2024 IEEE.

关键词： Decoding

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On-board X-Band Antenna Array

On-Board X-Band Antenna Array

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

作者： Gadzhiev, E.V. Ovchinnikova, E.V. Kondratieva, S.G. Smachilin, P.A. Moscow Aviation Institute National Research University Moscow Russia Mathematical Institute Named after S.M. Nikolsky Peoples Friendship University of Russia Rudn University Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781665406352

At present, there is a need for on-board antenna of radio date communication of target information. This is actually for all types of spacecrafts, including small spacecrafts. An overview of the using types of on-board antennas of radio date communication of target information is presented. Advantages and disadvantages are shown. In this paper a scheme for constructing an antenna array of polarizers with a linear partition is proposed, which provides the required energy and polarization characteristics of the antenna array of radio date communication of target information installed on-board the spacecraft. Numerical modeling of the element and the antenna array is carried out. The influence of the element design parameters on the directional characteristics and frequency characteristics is determined. The methods of synthesis of the radiation pattern of a multi-element antenna array and the issues of its practical implementation are considered. © 2022 IEEE.

关键词： Antenna arrays

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Requirements for Intelligent Safety Monitoring systems of Vehicles and Infrastructure Using Gas Motor Fuel (Natural Gas, Hydrogen)

Requirements for Intelligent Safety Monitoring Systems of Ve...

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

作者： Trofimenko, Yu.V. Grigoreva, T.Yu. Korobeynikova, K.R. Chekanov, A.Yu. Moscow Russia

ISBN: (纸本)9781665406352

Existing technological trends in using of various types of gas motor fuel (GMF) on transport require more thorough control of the technical condition of motor vehicles running on GMF (compressed natural gas and compressed hydrogen) and infrastructure facilities. The main problems are related to the increased danger of gas motor fuel due to the occurrence of possible leaks and non-compliance with the requirements for the operation of gas equipment. The article discusses the causes of emergencies, measures to prevent them, the requirements for intelligent systems for monitoring and preventing accidents and disasters due to leakage of combustible gases GMF. To analyze the main causes of accidents on GMF vehicles and on infrastructure, the method of constructing and analyzing fault trees (FTA) is used. According to preliminary estimates, when creating and using intelligent safety monitoring systems (ISMS), it will be possible to reduce the probability of failures leading to GMF leaks on vehicles and objects of infrastructure by about 15-20%. © 2022 IEEE.

关键词： Gases

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Design Features of the On-board Complex for Image Recognition Tasks in Driver Assistance systems (DAS)

Design Features of the On-Board Complex for Image Recognitio...

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

作者： Moseva, M.S. Yashina, M.V. Nosov, E.A. Moscow Technical University of Communications and Informatics Moscow Russia Moscow Automobile and Road Construction State Technical University Moscow Russia

This research is focused on analysis of modern methods of detecting and recognizing objects in the transport area. An active monitoring method for detecting vehicles on video stream is proposed and the requirements fo... 详细信息

ISBN: (纸本)9781728147727

关键词： Computer vision

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Theoretical Approaches to Improving the Efficiency of Business Processes of Passenger Transport Enterprises Through the Introduction of Modern Digital Technologies: Theoretical Aspects of Artificial Intelligence systems Development for Transportation Engineering

Theoretical Approaches to Improving the Efficiency of Busine...

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

作者： Makurina, V.M. Zhukov, A.I. Moroz, D.G. Akopov, F.V. Moscow Russia Chair Motor Transportations Moscow Russia

ISBN: (纸本)9781665406352

The widespread introduction of digital technologies in all spheres of activity opens up prospects for a significant increase in the efficiency and quality of various technological processes of the enterprise. This article discusses theoretical approaches to the development of digital models and solutions aimed at increasing the level of automation of the main production business processes at a transport enterprise (drawing up work schedules for drivers and work orders, registration and issuance of waybills, distribution of rolling stock along routes, organization and conduct of medical examinations of drivers, dispatching traffic control of vehicles on routes). © 2022 IEEE.

关键词： Efficiency

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Direction of Arrival Estimation Using Cyclostationary Properties of Wi-Fi signals

Direction of Arrival Estimation Using Cyclostationary Proper...

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

作者： Konovalyuk, M.A. Kuznetsov, Yu V. Baev, A.B. Gorbunova, A.A. Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9781728147727

In this paper the DOA estimation of Wi-Fi signals is consider based on their cyclostationarity property due to the digital modulation. The cyclic autocorrelation and complementary cyclic autocorrelation characteristics are shown for various modulation types used in 802.11 a/b/g standards. The simulations and experimental investigation results are presented. © 2020 IEEE.

关键词： Multiple signal classification

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Simulation of Digital and Analog Spatial Filtering of VHF signals in Channel with Losses due to Multipple Diffraction

Simulation of Digital and Analog Spatial Filtering of VHF Si...

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

作者： Nechaev, Yu. B. Peshkov, I.W. Bunin Yelets State University Yelets Russia

ISBN: (纸本)9781665406352

The paper describes digital antenna arrays (DAA) equipped with directional elements for spatial filtering in the azimuthal and elevation planes. In particular, the digital beamforming is investigated for VHF communication channels in the range below 1 GHz, taking into account the occurrence of obstacles in the path of direct propagation. Thus the paper presents the results of simulation of the signal propagation in the VHF range depending on diffraction. It is assumed that a symmetrical dipole is used on the transmitting side, and the Yagi-Uda directional antenna is used on the receiving digital antenna array. The circular and semi-dodecahedral geometries of the arrangement of the elements of the receiving digital antenna array are modeled. The bit error rate is estimated depending on the transmitter power. The Epstein-Peterson method is described in conjunction with the International Telecommunication Union (ITU) single knife-edge obstacle model for calculating multiple diffraction losses. The study was conducted for thirteen isolated knife-edge obstacles located along a propagation path of 70 km. © 2022 IEEE.

关键词： Beamforming

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