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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121-130 订阅

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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...

引用

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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Development of a Hardware and Software Complex for Optimizing Logistics Activities in the field of Consumer Waste Management

Development of a Hardware and Software Complex for Optimizin...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Asmanov, I.A. Zavyazkina, V.V. Moroz, D.G. Zhukov, A.I. Department 'Motor Transportations' Moscow Russia

ISBN: (纸本)9798350397727

The article deals with the problems associated with servicing the population in the field of solid municipal waste removal from garbage containers/bunkers. The authors propose a concept for the development of a software and hardware complex consisting of a device for collecting, processing and transmitting information, which is equipped with garbage containers / bunkers, and special software that uses the transmitted information. The device proposed by the authors is equipped with sensors of filling, smell, location, which allows operators for the removal and disposal of waste to optimize logistics activities due to the timeliness of waste removal, minimizing idle runs. The authors have developed an algorithm for constructing a detour route for containers in need of export, which is based on a genetic algorithm, as well as information received from sensors. The approach proposed by the authors will help solve a number of other problems in the field of waste management by controlling the timeliness of their removal. © 2023 IEEE.

关键词： Containers

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Resolution Time Theory Broadband communications in Problem of Data Dependent Jitter in Frequency Selective Channels with PAM-n-signals

Resolution Time Theory Broadband Communications in Problem o...

引用

2023 systems of signals generating and processing in the field of on board communications, SOSG 2023

作者： Lerner, I.M. Khairullin, A.N. Fayzullin, R.R. Shushpanov, D.V. Il'in, V.I. Kazan National Research Technical University N.a. A.N. Tupoleva - Kai Kazan Russia Sankt-Peterburgskij Gosudarstvennyj Universitet Telekommunikacij Imeni Professora Bonch-Bruevicha Saint-Petersburg Russia Kazan Federal University Kazan Russia

ISBN: (纸本)9798350397727

At that moment the volume of transmitted data grows according to the exponential law through all available communication channels. In this regard, more and more often this leads to the need to work in data transfer mode at a speed higher than the Nyquist rate. In this article, resolution time theory is used to develop novel approach jitter analysis dependent on the data that contributes to the overall jitter in frequency selective channels with PAM-n-signals. A novel approach has the following features: 1) the computational complexity is sub-exponential in the amount of effective memory;2) no restrictions associated with the shape of the pulse;3) strict rule is given for estimating the channel memory when using PAM-n-signals, which does not use the rule of maximum a posterior probability © 2023 IEEE.

关键词： Pulse amplitude modulation

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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...

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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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Scientific Approaches to the Identification of Test Objects and Types of Tests for Mobile Research Laboratories in the field of Intelligent Transport systems

Scientific Approaches to the Identification of Test Objects ...

引用

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

作者： Vorobyev, A.I. Gavrilyuk, M.V. Vorobyeva, T.V. Morozov, D. Yu Merkovich, A.M. Moscow Russia

ISBN: (纸本)9798350383614

The world practice of organizing research, testing and certification in the field of intelligent transport systems and autonomous movement shows the need to create research laboratories. The research laboratory and test site complexes are an important link in the development, certification and operation of ITS equipment and services, intelligent road infrastructure designed to support the movement of highly automated vehicles, as well as in the development of regulatory and technical requirements at the stage of research experiments. The presence of a sufficient set of research laboratory and testing facilities is the most important key to the development of technical progress. The creation of mobile research laboratories is necessary for the optimal solution of problems arising both at the stages of scientific justification and design and at the stages of construction and operation of ITS projects. ©2024 IEEE.

关键词： Research laboratories

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Blockchain Models to Improve the Service Security on board communications

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

引用

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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Construction of a Communication Channel with UAVs Based on Direct Sequence Spread Spectrum signals

Construction of a Communication Channel with UAVs Based on D...

引用

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

作者： Chirov, D.S. Lobov, E.M. Chertova, O.G. Bazylev, M.V. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9798350383614

Unmanned aerial vehicles (UAV) are actively used to solve various problems: monitoring the earth's surface, delivering goods, relaying signals, special military tasks, etc. A feature of UAV monitoring of the earth's surface is the need to transmit the video stream recorded by the on-board optical-electronic system of the device to a ground control point in real time. To transmit high-quality video, a radio channel with high information transmission speed is required. The construction of such communication channels is possible through the use of signals with complex signal-code structures. One of the ways to increase the efficiency of information transmission and construct complex signal-code structures is to use the method of expanding the signal spectrum. This article discusses the option of building a communication channel with medium-range unmanned aerial vehicles based on direct sequence spread spectrum (DSSS) signals. It has been shown that it is possible to build a communication channel with a UAV with a speed of up to 150 Mbit/s on a range of more than 100 km when using not very long pseudorandom sequence (PRS). The use of longer PRS will significantly reduce the communication range, but will significantly increase the energy secrecy of the channel, which is important for special-purpose UAVs. ©2024 IEEE.

关键词： Spectrum efficiency

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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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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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Measuring Far-field Radiation Patterns of Digital Beamforming Antenna Arrays

Measuring Far-Field Radiation Patterns of Digital Beamformin...

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

作者： Djigan, V.I. Department of Integrated Circuits Design Methodology Institute for Design Problems in Microelectronics of RAS Moscow Russia

ISBN: (纸本)9798350383614

A method of the antenna array far-field Radiation Pattern (RP) measurement is considered. This method is designed for the usage with the receiving Digital Beamforming Antenna Arrays (DBAA). Such type of antenna arrays typically does not have a radiofrequency output. Hence, the standard methods of the RP measurement, based on the radiation and the reception of the monochromatic probing signal, cannot be used for the DBAA RP measurement. The proposed method assumes the radiation of a probing signal modulated by a pseudo-noise sequence and the base-band processing of the DBAA output signal by means of a matched filter or a correlator. The paper presents the description of the measurement setup and the mathematical explanation of the measuring procedure. It has been shown that the accuracy of the RP measurement depends on the Signal-to-Noise Ratio (SNR) at the outputs of the DBAA channel receivers, the number of the array channels and the number of the pseudo-noise sequence symbols. The accuracy increases on 3 dB each time as the number of the array antennas or the pseudo-noise sequence symbols is doubled. This result is confirmed by the simulation of the RP measurement of the eight and the sixteen channel linear antenna arrays with the usage of the maximum length pseudo-noise sequence of 1023 and 2047 symbols. ©2024 IEEE.

关键词： Beamforming

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