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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"

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Technology for Collecting and Data processing of Street-Road Network Monitoring Objects

Technology for Collecting and Data Processing of Street-Road...

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

作者： A. A. Tsesar S. V. Varshavskiy Yu. E. Vasiliev M. A. Fineeva SIE "MADiDT" Moscow Russia Department of Road Building Materials Moscow Automobile and Road Construction State Technical University (MADI) Moscow Russia

The scheme of monitoring objects of the street-road network using mobile road laboratories is described. Examples of the most successful domestic laboratories are given. The data flows and data exchange formats of the mobile complex of multi-criteria assessment of the operational condition of the objects of the road network "Automated Road Scanner" are considered. The dependencies for predicting the international roughness, wheel tracking, and traction coefficient index are given. An original technology for a comprehensive assessment of the transport and operational condition of street and road network objects based on modern high-tech equipment, which can be used for all types of inspections, is described. A reasonable conclusion is made that the use of the proposed technology has significantly reduced the cost of monitoring and the number of errors in the detection of pavement defects. The study justified the use of the pavement condition index to decide on the assessment of its condition: normal, satisfactory, unsatisfactory, or emergency. The conclusion outlines the prospects for the development of research toward the creation and use of specialized decision support systems, providing the accumulation and use of data and knowledge in the subject area.

关键词： Decision support systems Asphalt Data analysis Costs Roads Laboratories Wheels

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Virtual Advanced Driver-Assistance systems Tests

Virtual Advanced Driver-Assistance Systems Tests

引用

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

作者： V. V. Gaevskiy N. V. Popov S. R. Kristalniy M. A. Toporkov A. N. Andreev Moscow Automobile and Road Construction State Technical University (MADI) Moscow Russia

The article deals with the issue of testing highly automated vehicles (HAVs). Particular attention is paid to virtual testing using hardware-software complex (HSC). Siemens PreScan is used as a software implementation environment for HSC. A technique for testing vision aids based on radar sensors as part of an automatic emergency braking system (AEBS) is proposed. Special attention is paid to the influence of such effects as atmospheric attenuation of radio waves, as well as occlusion. A methodology is also proposed for conducting virtual tests of the effectiveness of LANE SUPPORT systems (LSS). The methodology includes test scenarios implemented in various weather and road conditions in the Advanced driver-assistance systems (ADAS) testing software package. Test scenarios for virtual simulation were developed based on the ISO 17361:2007 test type: changeover to the left lane on a straight section of road through a broken marking line. The results of virtual testing according to the proposed methodology for the effectiveness of the Lane departure warning (LDW) system of the Audi A8 are presented. A monochrome video camera is used as a technical vision device for the operation of the LDW system.

关键词： Software packages Roads Software algorithms systems architecture Radar Sensor systems Sensors

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Evaluation of Influence of the Radio Receiving Devices Heterodynes Functioning Quality on the Quadrature Amplitude Modulation Digital signals Reception Noise Immunity

Evaluation of Influence of the Radio Receiving Devices Heter...

引用

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

作者： German Leon D. S. Koptev Department of Space Instrumentation and Communication Systems Southwest State University Kursk Russia

In digital transmission lines with quadrature amplitude modulation of signals the information is contained in the change in the amplitude and phase transmission of the signal. Therefore, in comparison with other types of modulation, there are more stringent requirements for the level of phase noise of the signal at the input of the QAM-signal demodulator, leading to a decrease in the reliability of reception. This article will consider the requirements for short-term frequency stability of synthesizers of transmission lines, which use signals of multi-position quadrature-amplitude modulation in conjunction with quasi-coherent reception of these signals. The carrier is extracted on the receiving side directly from the received QAM-signal using a carrier recovery device by demodulating the received signal and then its subsequent narrow-band filtration. As a narrow-band tunable filter, an auto-tuning frequency switching system is used. With the improvement in the filtering quality of the demodulated signal, the phase fluctuations of the restored carrier associated with the action of additive noise are reduced, the energy losses of the applied quasi-coherent reception are reduced in comparison with the ideal one, which requires the complete absence of the phase error of the selected reference signal. The approximation of the noise immunity of real coherent QAM-signal demodulators to the theoretical one limits the phase noise of the signal at the input of the demodulator associated with the imperfection of the frequency synthesizers on the transmitting and receiving sides of digital communication lines.

关键词： Phase noise Frequency synthesizers Power system measurements Frequency modulation Power transmission lines Density measurement Quadrature amplitude modulation

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Joint Optimization of Reconfigurable Intelligent Surface Phase Shifts and Power Allocation in LEO-NOMA systems Using Soft Actor-Critic

Joint Optimization of Reconfigurable Intelligent Surface Pha...

引用

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

作者： Khalil M. Yahia Ibrahim S. Wahbi Dmitry A. Klimov Tammam Z. Dawood Moscow Technical University of Communications and Informatics Moscow Russia Department of Electronics and communication Engineering Damascus university Damascus Syria

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

Combining Reconfigurable Intelligent Surfaces (RIS) with Non-Orthogonal Multiple Access (NOMA) offers a promising way to improve spectral efficiency and energy utilization in Low Earth Orbit (LEO) satellite networks. However, the highly dynamic nature of LEO environments make it challenging to optimize RIS phase shifts and power allocation in real time. This paper introduces a reinforcement learning-based framework that applies the Soft Actor-Critic (SAC) algorithm to jointly optimize RIS configurations and power allocation among users. The proposed method works in two stages: first, SAC fine-tunes RIS phase shifts while keeping power allocation fixed; then, it dynamically adjusts power levels to enhance overall system performance. This method, in contrast to traditional strategies that depend on perfect channel state information (CSI), focuses on adaptive decision-making aimed at maximizing rewards, effectively mitigating the impact of channel estimation errors during training. Simulation results confirm that the SAC-based framework effectively boosts channel capacity without requiring additional transmission power. Furthermore, integrating RIS with NOMA further enhances performance, making it a strong candidate for next-generation satellite communications.

关键词： Training NOMA Heuristic algorithms Satellite broadcasting Low earth orbit satellites Channel estimation Reconfigurable intelligent surfaces Mathematical models Resource management Optimization

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Digital processing of Radar signals in the Automatic Helicopter Landing System on a Moving Platform

Digital Processing of Radar Signals in the Automatic Helicop...

引用

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

作者： Gribanov, A.S. Okhotnikov, D.A. Bulanov, K.Yu. Moscow Aviation Institute National Research University Moscow Russia

ISBN: (纸本)9780738130897

The paper deals with the problem of landing a helicopter on a moving platform in difficult weather conditions. The article presents a study of the possibility of automatic determination of coordinates, using antennas located on the blades of a helicopter propeller, relative to the landing site where the radio signal sources are located. This arrangement of the antennas when moving in space allows you to measure the distance to the source of the radio signal due to the Doppler shift of the signal frequency. The implementation of such a system can make it possible to solve the most complex aviation tasks to ensure navigation during takeoff/landing in difficult weather conditions, as well as during search and rescue operations. Such a technical solution allows you to get the direction of the radiation source of the radio signal, as well as the range to it with high accuracy. © 2021 IEEE.

关键词： Landing

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The Effect of the Use of Service Level Agreement for Operators of Transport systems and On-board systems

The Effect of the Use of Service Level Agreement for Operato...

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

作者： Zubilevich, A.L. Sidney, S.A. Tsarenko, V.A. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9780738130897

Fiber-optic communication lines are the basis of telecommunication networks. If at the initial stage of the development of optical communication FOCLs were laid only on transport networks, then as this type of communication develops, there is a transition to fiber-optic technology in intra-facility, including on-board systems. Today, the demand for traffic transmission is constantly growing, which leads to an increase in the amount and speed of transmitted information. Fiber outages result in poor communications, disrupt business processes, backorders, and dissatisfied customers. Even small communication downtime causes huge losses. The introduction of service quality categories will simplify the operation of transport systems and increase the economic efficiency of communication networks. However, this requires significant capital expenditures and annual operating costs, which do not always pay off by avoiding fiber downtime. A method for assessing the effectiveness of the use of a service level agreement (SLA) between an operator of a fiber-optic communication line (FOCL) and consumers of communication services is proposed. The net present value (NPV) is used as an indicator of efficiency;probabilistic characteristics are introduced. The calculation results and their brief analysis are presented. © 2021 IEEE.

关键词： Fibers

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Evaluation of the Efficiency of Blind Signal Separation in the Problem of Detecting BPSK signals

Evaluation of the Efficiency of Blind Signal Separation in t...

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

作者： Liberovskiy, N.Yu. Chirov, D.S. Priputin, V.S. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9780738130897

This paper investigates the effectiveness of the blind signal separation algorithm in the problem of detecting digital BPSK signals. The classical methods of blind separation of signals and criteria for signal independence are considered. A model of the studied algorithm for blind signal separation is shown, based on the calculation of a mixing matrix that brings the joint cumulants of the second and fourth orders to zero. To exclude a trivial solution, additional restrictions are imposed on signal dispersions. A system of equations for finding the mixing matrix coefficients is presented. The form of the coefficients of the mixing matrix is shown, which brings the signals to an uncorrelated form. The possibility of an analytical solution of the equation associated with the equality of the joint fourth-order cumulant to zero is shown. A model of modulation and detection of digital signals is described. The simulation result of the blind signal separation algorithm is presented graphically. The efficiency of the proposed algorithm is shown. © 2021 IEEE.

关键词： Blind source separation

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Some Questions of Histogram Approximation for the Lengthened Objects Detection Algorithm

Some Questions of Histogram Approximation for the Lengthened...

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

作者： Sorokin, A.K. Ural Federal University Ekaterinburg Russia

ISBN: (纸本)9780738130897

The core idea of this paper is detection of lengthened objects by the radar signal. The methodological base of the exploration is statistical processing of the reflected signal. The lengthened objects are those objects of underlying surface, which could be presented by straight line. It is assumed that the radar is mounted on the unmanned airborne vehicle and this detection system is oriented to help navigation system to detect vehicle's position. This idea was presented in previous papers, but this exact paper is concentrated on the practical aspect of algorithm application, i.e. problems of histograms approximation parameters for the reflected signal, method of histogram approximation and etc. The estimation of the corresponding parameters allows us to increase the accuracy of the designed algorithm. © 2021 IEEE.

关键词： Navigation systems

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Simulation of the Functioning of Self-Adjusting systems with Additive and Parametric Feedback

Simulation of the Functioning of Self-Adjusting Systems with...

引用

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

作者： S. L. Yablochnikov I. O. Yablochnikova V. B. Dzobelova I. A. Abrosimova E. A. Avdeeva Plekhanov Russian University of Economics National Research University Moscow Power Engineering Institute Moscow Russia National University of Science and Technology «MISIS» Moscow Russia North Ossetian State University named after Kosta Levanovich Khetagurov Vladikavkaz Russia Moscow State University of Civil Engineering Moscow Russia Saint Petersburg Mining University JSC “Central Design Bureau ‘Lazurit’” St. Petersburg Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

For processes implemented in various control systems, it is often necessary to ensure the presence of selfadaptation (self-learning) properties, in particular, this is important when the control object is characterized by a wide range of transmission coefficient changes, as well as if it is necessary to ensure the stability of the quality of the object's control processes when exposed to a set of parametric disturbances. The successful operation of control systems in such conditions must be ensured so that the system's response to this signal is adequate and effectively formed in accordance with the quality criterion, for example, the minimum error. One of the ways to solve such problems is to integrate additive parametric feedback circuits into the control system. At the same time, it is necessary to ensure that the condition regarding the independence of the error value from the values of the object parameters is fulfilled. This, in turn, ensures that errors are minimized. The authors of this scientific study have developed and substantiated a way to ensure such a condition for minimizing control errors by forming a parametric feedback subsystem. Other means are also proposed and justified to minimize errors in the management of systems and processes of various types.

关键词： Economics Industries Feedback loop Additives Multidimensional systems Feedback circuits Stability criteria Process control Hierarchical systems Control systems

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The Energy Spectrum of the Noise Modulation Function under the Influence of Slow Multiplicative Noise

The Energy Spectrum of the Noise Modulation Function under t...

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

作者： V. M. Artyushenko V. I. Volovach Information Technology and Management Systems Department Technological University Korolev City Russia Informational and Electronic Service Department Volga Region State University of Service Togliatty City Russia

The effect of slow multiplicative noise on the energy spectrum of the noise modulation function is analyzed. Two cases of determining the energy spectrum are considered: with signal distortions described by a narrow-band normal stationary random process, and under the influence of pulse-fluctuation noise. The corresponding mathematical expressions of the energy spectra are obtained, including the case of deep phase distortions. It is shown that when narrow-band multiplicative noise affects the signal, a discrete component is present in the energy spectrum of the noise modulation function. Wherein the depth of the phase distortions will determine the power of said discrete component. The distribution pattern of the continuous part of the energy spectrum of phase distortion is determined by the ratio of the width of the named spectrum to its average frequency. With pulse-fluctuation modulating noise with a deterministic clock interval, the energy spectrum of the noise modulation function is the sum of continuous and discrete parts. Expressions are obtained for determining the discrete and continuous parts of the energy spectrum of the noise modulation function under the influence of modulation noise. The conditions under which the spectrum consists only of discrete components are given.

关键词： Frequency modulation Phase modulation Random processes Phase distortion Manganese Clocks

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