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2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)最新文献

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The Research of the Digital Beamforming Algorithm for Optimal Noise Reduction in a Cylindrical Antenna Array with Directive Radiators 定向辐射圆柱天线阵数字波束形成降噪算法研究
Y. Nechaev, I. Peshkov, N. Fortunova, I. Zaitseva
At present, digital antenna arrays are of growing research interest, since they allow us to form nulls and maxima of the radiation pattern without involving additional devices, but in the processing unit. This paper studies digital beamforming in three-dimensional space, i.e., in azimuth and angle of elevation on the example of a statistically optimal noise reduction algorithm in the channels of the array. A matrix-vector expression was obtained for calculating the vector of weight coefficients in a digital antenna array. The results of modeling a cylindrical antenna array of directive radiators are presented. The characteristics of a cylindrical digital antenna array are studied depending on the SNR (signal-to-noise ratio) for antenna elements with different directivity, and depending on the directive gain of antenna elements. The characteristics of digital beamforming, such as peak power, side lobe level, null depth, antenna gain, and others, were evaluated.
目前,数字天线阵列正引起越来越多的研究兴趣,因为它们允许我们在不涉及额外设备的情况下形成辐射方向图的零点和最大值,但在处理单元中。本文以阵列信道统计最优降噪算法为例,研究了三维空间(方位角和仰角)下的数字波束形成。给出了一种计算数字天线阵列中权系数矢量的矩阵向量表达式。给出了一个圆柱形定向辐射天线阵列的建模结果。研究了具有不同指向性的天线单元的信噪比和天线单元的指向性增益对圆柱形数字天线阵列特性的影响。评估了数字波束形成的特性,如峰值功率、旁瓣电平、零深度、天线增益等。
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引用次数: 0
Analysis of Efficiency of Long-Term Multi-Scanning Radar Observation Methods 长期多扫描雷达观测方法效率分析
A. B. Silantyev, A. Golubev, C. Fernandu, J. Olim, A. Timoshenko
In this paper we consider a surveillance radar using a multi-scanning observation method based on the well-known “track-before-detect” procedure. We analyse different approaches to estimating efficiency of long-term multi-scanning observation methods. The expected benefit of the methods is usually associated with detection range of radar. Detection range is increased due to long-term accumulation of signal energy. But it is necessary to consider not only detection range gain, but also the benefit related to obtaining of track data. We analyse the accuracy of trajectory parameters estimation and increase in tracks initiation range.
在本文中,我们考虑了一种基于著名的“探测前跟踪”程序的多扫描观测方法的监视雷达。我们分析了评估长期多扫描观测方法效率的不同方法。这些方法的预期效益通常与雷达的探测距离有关。由于信号能量的长期积累,增加了探测距离。但不仅要考虑探测距离增益,还要考虑航迹数据获取的相关效益。分析了弹道参数估计的精度和增加弹道起始距离的方法。
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引用次数: 1
Algorithm and Software for Intelligent Analysis of the Frequency Spectrum for Cognitive Radio Systems 认知无线电系统频谱智能分析算法与软件
E. O. Kandaurova, D. S. Chirov
Currently, systems with dynamic access to the radio spectrum technology, such as cognitive radio systems, are in demand and are actively developing. To ensure the effective operation of such systems, constant knowledge of the radio environment in the frequency range used is necessary. This article is devoted to the development of algorithms and software for intelligent analysis of the frequency spectrum to build a model for predicting the spectrum occupancy in time. The solution of this problem allows you to provide dynamic spectrum access without affecting the rights and quality of communication of primary users, while not reducing the quality of service for secondary users. This article has proposed and described an algorithm for implementing dynamic spectrum access with prediction based on spectrum occupancy models, consisting of 3 stages. Currently, software has been developed and a field experiment has been carried out to implement the first stage of the algorithm. The results of a field experiment for the first stage showed that the developed software allows us to identify free parts of the spectrum during the day. Also, the values of the duty cycle were obtained, allowing predicting the probability of occupancy of the frequency channel in the selected time period. Using this information, it is possible to build frequent (sequential) patterns to develop an up-to-date prediction model of spectrum occupancy.
目前,具有动态访问无线电频谱技术的系统,如认知无线电系统,是有需求的,并且正在积极发展。为确保这类系统有效运作,必须不断了解所使用频率范围内的无线电环境。本文致力于开发用于频谱智能分析的算法和软件,以建立实时预测频谱占用的模型。通过解决该问题,可以在不影响主用户权限和通信质量的情况下提供动态频谱接入,同时不降低从用户的业务质量。本文提出并描述了一种基于频谱占用模型预测的动态频谱接入算法,该算法分为3个阶段。目前,已经开发了软件,并进行了现场实验,实现了算法的第一阶段。第一阶段的现场实验结果表明,开发的软件使我们能够在白天识别频谱的自由部分。此外,还获得了占空比的值,从而可以预测在所选时间段内占用频率通道的概率。利用这些信息,可以建立频繁的(连续的)模式来开发最新的频谱占用预测模型。
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引用次数: 3
Optimization in Oscillators and Autodynes with Stabilizing Resonators 具有稳定谐振器的振荡器和自激器的优化
M. V. Balashkov, V. M. Bogachev, I. N. Leonov
This paper is devoted to the criteria choice and determination of optimal operation modes and parameters of oscillating systems of double- and triple-circuit oscillators taking into account the contradictory requirements to the generating power, the frequency instability and the oscillation stability. The optimization algorithm is based on the maximum search of the objective function (OF) at the specified regeneration factor. As the objective function, we choose the function equaled to the product of the partial power of the first circuit and the frequency stabilization coefficient in the power $nu=1ldots 2$. At $nu=1$, the OF maximum corresponds to the maximum of the frequency stabilization coefficient; at $nu=2$-to the minimum of the phase diffusion coefficient. At intermediate $nu$ value, the compromise task solution is provided. At optimization, we choose the oscillating system locus shape, at which the hysteresis phenomena absence is provided at oscillator tuning on the nominal frequency. Recommendations on the efficiency choice of the load coupling circuit are discussed.
考虑到双回路和三回路振荡系统对发电功率、频率不稳定性和振荡稳定性的矛盾要求,研究了双回路和三回路振荡系统的最佳运行方式和参数的选择与确定准则。该优化算法基于目标函数在指定再生因子处的最大搜索。作为目标函数,我们选择等于第一个电路的部分功率与功率$nu=1ldots 2$中的稳频系数乘积的函数。$nu=1$时,OF最大值对应于稳频系数最大值;在$nu=2$到相扩散系数的最小值。在$nu$值的中间位置,给出折衷任务解。在优化时,我们选择了振荡系统轨迹形状,在该形状下,振荡器在标称频率上调谐时不存在滞回现象。对负载耦合电路的效率选择提出了建议。
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引用次数: 0
The Basics of Automated Processing of Optical Fiber Reflectograms for Evaluating Characteristics of the Mandelstam — Brillouin Backscatter 评价曼德尔施塔姆-布里渊反向散射特性的光纤反射图自动处理的基础
I. Bogachkov, N. Gorlov
A classification of varieties of single-mode optical fibers based on analysis of the Mandelstam - Brillouin backscatter characteristics is discussed in this paper. It is shown how by the characteristics of the frequency profiles of the Mandelstam - Brillouin scattering spectrum, one can determine the type of fiber and also evaluate the change in the strain and Brillouin frequency shift. The programs for the automated processing of the Brillouin reflectograms data are presented. Based on the analysis of Brillouin reflectograms, it is possible to identify a factor that had a predominant influence on the characteristics of the Mandelstam - Brillouin backscatter signal in the explored sections of single-mode optical fibers.
本文在分析曼德尔施塔姆-布里渊后向散射特性的基础上,对单模光纤进行了分类。通过曼德尔施塔姆-布里渊散射谱的频率分布特征,可以确定光纤的类型,也可以评估应变和布里渊频移的变化。给出了布里渊反射图数据的自动处理程序。基于对布里渊反射图的分析,有可能在单模光纤的探测截面中确定一个对曼德尔施塔姆-布里渊后向散射信号特性有主要影响的因素。
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引用次数: 2
Development and Research of a HF Range Hybrid Filter Bank Based on ARM Processor 基于ARM处理器的高频范围混合滤波器组的开发与研究
V. Magsumov, V. Priputin, D. S. Chirov
Currently, the electronic environment is largely determined by the use of modern radio communication systems with adaptive modes of operation, as well as the use of complex broadband signals. Monitoring a wide frequency range is used when observing various energy and spectral parameters of radio signals. The applicability of a particular signal format to the problem being solved is determined by the correspondence of these parameters to the conditions in which information is transmitted and received. The aforementioned parameters include possible interference, leading to various kinds of distortions, which, in turn, cause a deterioration in the parameters of radio monitoring systems. One of the possible methods for solving the problem of processing a wide frequency range in a difficult interference environment is the use of adaptive subband filtering based on a hybrid filter bank. The basis of the method is the decomposition of the input signal into individual frequency components (subchannels), the processing of which is performed at a speed M reduced by a factor of compared with the input signal. Further, the processed frequency components are combined into a single signal. A test of the developed filter bank was carried out on a processor with an arm core.
目前,电子环境在很大程度上取决于使用具有自适应操作模式的现代无线电通信系统,以及使用复杂的宽带信号。在观测无线电信号的各种能量和频谱参数时,采用宽频率范围监测。特定信号格式对所要解决的问题的适用性取决于这些参数与信息发送和接收条件的对应关系。上述参数包括可能的干扰,导致各种畸变,进而导致无线电监测系统参数的恶化。解决在困难干扰环境下处理宽频率范围的问题的可能方法之一是使用基于混合滤波器组的自适应子带滤波。该方法的基础是将输入信号分解成单独的频率分量(子通道),其处理以速度M进行,与输入信号相比,速度M降低了一个系数。此外,将处理过的频率分量组合成单个信号。在带臂核的处理器上对所开发的滤波器组进行了测试。
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引用次数: 0
Optimization of the Structure of Spectral-Effective Radio Signals on the Basis of Functional Converters and Vector Modulators in the Composition of the Predistortion Tract 基于功能变换器和矢量调制器组成预失真信道的频谱有效无线电信号结构优化
S. S. Pechnikov, S. A. Sherstukov
The article describes a method for optimizing the structure of spectrally effective radio signals using functional converters and vector modulators as part of the predistortion path, which allows you to convert the temporal forms of amplitude-phase-modulated signals to radio signals with a constant envelope to increase energy efficiency through the use of nonlinear power amplifiers.
本文描述了一种使用功能转换器和矢量调制器作为预失真路径的一部分来优化频谱有效无线电信号结构的方法,该方法允许您将幅度相位调制信号的时间形式转换为具有恒定包络的无线电信号,从而通过使用非线性功率放大器来提高能量效率。
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引用次数: 1
Stationary Channel Factors and Signal Disturbances in a Direct Converter Receiver in a System with MIMO Joint Estimation Algorithm MIMO联合估计系统中直接变换器接收机的平稳信道因素和信号干扰
N. E. Poborchaya
The article discusses the algorithm for the joint estimation of the stationary channel factors and signal distortions, such as DC drift, the frequency shift remaining from the demodulation procedure, amplitude and phase imbalance (IQ-imbalance). The problem of estimating unknown parameters is solved in two stages, by combining two procedures. The first, based on the polynomial approximation of the generalized communication channel and the linear least squares (MLS) method, estimates the constant components of the signal quadrature, amplitude and phase imbalance, as well as a rough estimate of the channel frequency and factors. The second procedure is synthesized using the Taylor approximation, a modified method of least squares in the form of a functional A.N. Tikhonov and regularization method. It is a nonlinear recursive algorithm for obtaining a more accurate estimate of the frequency and channel factors. This approach allows a sufficiently high estimation accuracy to reduce the complexity of the algorithm compared to using only the second procedure. The resulting algorithm works under conditions of uncorrelated Rayleigh fading in MIMO systems with spatial multiplexing with a priori uncertainty regarding the statistical characteristics of the communication channel (except for the dispersion of additive noise) and the laws of noise distribution, both phase and additive.
本文讨论了联合估计平稳信道因素和信号畸变的算法,如直流漂移、解调过程遗留的频移、幅相不平衡(iq -不平衡)。通过两种方法的结合,分两个阶段解决了未知参数的估计问题。首先,基于广义通信信道的多项式近似和线性最小二乘(MLS)方法,估计了信号正交、幅值和相位不平衡的常数分量,以及信道频率和因子的粗略估计。第二个过程是综合使用泰勒近似,一种改进的最小二乘方法的形式在一个泛函A.N.吉洪诺夫和正则化方法。它是一种非线性递归算法,用于更准确地估计频率和信道因子。与仅使用第二个过程相比,该方法允许足够高的估计精度来降低算法的复杂性。所得到的算法在具有空间复用的MIMO系统的不相关瑞利衰落条件下工作,该条件下通信信道的统计特性(除加性噪声的色散外)和相位和加性噪声分布规律具有先验不确定性。
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引用次数: 0
On the Peculiarities of The Behaviour Of The Instantaneous Frequency of APSK-N-Signal At The Linear Selective System Output In The Presence Of ISI ISI存在下线性选择系统输出处apsk - n信号瞬时频率行为的特殊性
Z. R. Idiatullov, M. M. Fatykhov, G. Il'in, V. I. Il’in
The paper studies the behavior of the instantaneous frequency of a multi-position amplitude-phase-manipulated signal at the output of linear selective systems under conditions of strong intersymbol interference. On the basis of the used model, an analytical expression is obtained, which makes it possible to estimate the frequency changing of this type of signal at the output of linear selective systems. The result of the analysis of the obtained expression by means of mathematical simulating identified common properties that, in particular, can be used to create highly efficient symbolic synchronization systems, which can be used both in data transmission systems operating under strong intersymbol interference.
本文研究了在强码间干扰条件下,多位置幅相控制信号在线性选择系统输出端的瞬时频率特性。在此模型的基础上,得到了一种解析表达式,可以估计线性选择系统输出时这类信号的频率变化。用数学模拟的方法对所得到的表达式进行了分析,发现了它们的共同特性,特别是可以用来创建高效的符号同步系统,它既可以用于在强符号间干扰下运行的数据传输系统。
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引用次数: 0
The Possibility and Prospects for Using Multiferroic Materials in the Production 多铁性材料应用于生产的可能性与前景
B. Khlopov, N. P. Kolesnikov, G. Andreev, V. Shashurin, S. Meshkov
Research of multiferroid materials was conducted for the purpose of their possible use in industrial production for radio-electronic information devices [1]. It is shown that ordered structures based on silica microspheres with embedded magnetic nanoparticles represent one of the most interesting options for implementing multiferroid materials in the form of a 3D lattice of nanoclusters of crystalline multiferroics (iron, manganese and cobalt titanates of the FeTi205, FeTiO3 type), the results of which are presented in the materials of the article [2]. The possibility of the existence of a negative real part of the magnetic permeability of such materials under magnetic resonance conditions is not in doubt. Experiments conducted by a group of authors have shown that external fields can significantly change the characteristics of this class of nanomaterials [3]–[5] and allow them to be used in promising REA developments. Synthesis of multiferroic and multiferroic materials based on previously developed technologies to produce high-quality lattice packings of nanospheres of silica structure of opal SiT2 [6], and study of electromagnetic, dielectric, optical, magnetic and other properties of such materials is of great importance due to the prospects of their application, for example, allowed to find out the conditions under which this class of multiferroic media can be used in the creation of an effective electronic information devices that control electromagnetic fields.
对多铁质材料的研究是为了将其应用于无线电电子信息设备的工业生产[1]。研究表明,基于嵌入磁性纳米颗粒的二氧化硅微球的有序结构代表了以晶体多铁质纳米团簇(FeTi205、FeTiO3型的铁、锰和钴钛酸盐)的3D晶格形式实现多铁质材料的最有趣的选择之一,其结果在文章[2]的材料中提出。这种材料的磁导率在磁共振条件下存在负实部的可能性是毫无疑问的。一组作者进行的实验表明,外场可以显著改变这类纳米材料的特性[3]-[5],并使它们能够用于有前途的REA开发。基于前人开发的技术合成多铁性和多铁性材料,制备高质量的蛋白石硅结构纳米球晶格填料[6],研究此类材料的电磁、介电、光学、磁性等性质,具有重要的应用前景,例如:允许找出在何种条件下这类多铁性介质可以用于创建有效的控制电磁场的电子信息设备。
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引用次数: 0
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2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)
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