2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)最新文献_第7页

Errors and Distortions of the Characteristics of a Multichannel Phased Antenna Array with Directional Asymmetry Obtained by Synthetic Method in Aviation Weather Navigation Radar 航空气象导航雷达中定向不对称多通道相控阵特性的综合误差与畸变

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470581

Yu. A. Novikova, M. B. Ryzhikov, V. G. Svanidze

{"title":"Errors and Distortions of the Characteristics of a Multichannel Phased Antenna Array with Directional Asymmetry Obtained by Synthetic Method in Aviation Weather Navigation Radar","authors":"Yu. A. Novikova, M. B. Ryzhikov, V. G. Svanidze","doi":"10.1109/WECONF51603.2021.9470581","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470581","url":null,"abstract":"Considered in this article synthetic method of a one-side reduction of the side lobes level of the total radiation pattern of the antenna system is one of the options to protect onboard weather radars operating in the modes of airspace overview for searching for dangerous weather formations and/or point and group air targets (manned planes and helicopters or drones) from interference signals coming from the underlying surface. The method is adaptive: interference signals from the ground are subjected to spatial rejection in the purpose angular range, determined by the size of the range of the current overviewing area. Unfortunately, the practical implementation of the method is usually associated with many destabilizing factors, for example, errors in the amplitude-phase distribution over the antenna array. In this paper special attention is paid to the analysis of the influence of the such destabilizing factors on the effectiveness of the synthetic method, as well as on the characteristics of the direction and direction-finding of antenna of the onboard radar.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126385306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Agent-based ZeroLogon Vulnerability Detection 基于代理的ZeroLogon漏洞检测

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470548

S. Bezzateev, S. Fomicheva, G. Zhemelev

引用次数: 1

Channel Estimation of the 802.11p Standard in High-Speed Mobile Environments 高速移动环境下802.11p标准的信道估计

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470693

S. N. Eliseev, L. N. Filimonova

{"title":"Channel Estimation of the 802.11p Standard in High-Speed Mobile Environments","authors":"S. N. Eliseev, L. N. Filimonova","doi":"10.1109/WECONF51603.2021.9470693","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470693","url":null,"abstract":"Wireless communication systems of the 802.11 p standard designed for direct communication between high-speed mobile users in the channels of the 5.9 Ghz band, subject to rapid fading. At the physical level, these systems are completely identical to the 802.11 a systems created for communication in the same range with very low speed objects, and the channel evaluation is performed by the “preamble” training symbols transmitted at the beginning of the frame. As a result, in longterm information packets (frames), the value of the channel estimation error reaches unacceptably large values. In this paper, it is proposed the change in the channel estimation in 802.11 p is based on the” cross-layered” approach, where the pilot symbols or pilot tones (PT) known on the receiving side are inserted at a high standard level as pilot ones to improve the channel estimation. The initial information for the channel parmeters is the estimates of these additional PT, and to improve this assessment, it is proposed to apply the inter-channel interference (ICI) self-suppression approach. The resulting reduction in the mean-square error of the channel estimation is given on the example of a channel with Rayleigh fading caused by Doppler spreading of the Jake.s type.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125813384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative Analysis of Results of Modern Classification Algorithms Usage for Determining the Type of Physical Activity Based on Integrated Sensors Data 基于集成传感器数据确定运动类型的现代分类算法使用结果的比较分析

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470661

A. V. Agranovskiĭ, A. P. Silukov

{"title":"Comparative Analysis of Results of Modern Classification Algorithms Usage for Determining the Type of Physical Activity Based on Integrated Sensors Data","authors":"A. V. Agranovskiĭ, A. P. Silukov","doi":"10.1109/WECONF51603.2021.9470661","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470661","url":null,"abstract":"The article considers the usage of various classification algorithms to process data from integrated sensors of a modern smartphone to obtain user's physical activity. To compare classification algorithms, we use modeling based on a dataset from an experiment that has 561 significant characteristics for each type of activity with a total number of records equal to 10299. The analysis of data from integrated sensors is performed by several classification algorithms: decision trees, Random Forest algorithm, logistic regression, support vector machine with a linear function and a kernel function. In addition to pure (without modification) ones, algorithms with preliminary optimization of hyperparameters using random search and cross-validation are used. The evaluation metrics are: Accuracy, Precision, Recall, F-measure, Mean Absolute Error and Root Mean Square Error. The estimated metrics and confusion matrices obtained using specially written python scripts using the sklearn library are provided for each algorithm. Analysis of the presented results shows that the best classification results both with preliminary optimization of hyperparameters and cross-validation, and without preliminary tuning, are provided by the use of linear support vector machine algorithm.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125916616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Arbitrarily Accurate Approximation of Numerical Characteristics of Stationary ALOHA Channels 静态ALOHA通道数值特性的任意精确近似

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470700

A. Burkov, S. Shneer, A. Turlikov

引用次数: 0

The System for Determining Position, Movement and Inclination of the Human Head For Orthopedics 用于骨科的人体头部位置、运动和倾斜度测定系统

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470743

O. Tikhonenkova, S. A. Tsurkov, A. Danilova, T. Sergeev

引用次数: 0

Investigation of Conditions for Detecting False Windshear Areas in Weather Radar for Low-Altitude Flights of Small Aircrafts 小型飞机低空飞行气象雷达探测假风切变区的条件研究

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470689

A. R. Bestugin, M. B. Ryzhikov, Yu. A. Novikova, I. Kirshina

引用次数: 1

Formation of Frequency-Modulated Signals Using the Direct Digital Synthesis Method 利用直接数字合成方法形成调频信号

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470536

I. Ryabov, N. V. Degtyarev, D. N. Bochcarev

{"title":"Formation of Frequency-Modulated Signals Using the Direct Digital Synthesis Method","authors":"I. Ryabov, N. V. Degtyarev, D. N. Bochcarev","doi":"10.1109/WECONF51603.2021.9470536","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470536","url":null,"abstract":"The most important trends of the development of communication and radiolocation systems are the application of higher frequencies and the transition to the use of complex signals for the creation of new advanced radio engineering systems with improved noise immunity. The search for new methods of improving the operation speed and «spectrum purity» of formed oscillations is very important. The purpose of the work is to extend functional capabilities of direct digital synthesizers and digital frequency synthesizers, when using them in radio-electronic systems of radiolocation, navigation and communication. Research methods. While solving the set tasks, the methods of the signal theory, number theory, probability theory and mathematical statistics as well as mathematical modeling, computer simulation and experimental research were used in the work. Results. These direct digital synthesizers allow synthesizing frequency-modulated and phase- manipulated signals and they have extended functional capabilities in comparison with other types of synthesizers. The given direct digital synthesizers can be used in adaptive communication systems, telecommunications, radio-engineering systems for the remote sensing of the ionosphere, in radiolocation and navigation systems.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131174275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Trajectory Control Algorithms for Unmanned Aircraft Complexes Flying in Formation 无人机编队飞行的轨迹控制算法

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470714

A. Ermakov, T. Portnova, B. Lezhankin, V. Erokhin

引用次数: 0

Evaluation of the Union Bound Using Characteristic Functions for Coded Transmission over Memoryless Channels 用特征函数求无记忆信道编码传输的联合界

2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) Pub Date : 2021-05-31 DOI: 10.1109/WECONF51603.2021.9470730

A. Trofimov, F. Taubin

引用次数: 0