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

{"title":"Frequency Controlled Harmonic Oscillators Using Differentially Connected FETs with Automatic Oscillation Amplitude Control","authors":"T. I. Boldyreva, E. M. Torina","doi":"10.1109/SYNCHROINFO49631.2020.9166123","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166123","url":null,"abstract":"Using method of shortened symbolic equations, investigation of stationary mode of operation and characteristics of phase and amplitude fluctuations of oscillations in the frequency controlled differential field effect transistor (FET) oscillator was fulfilled. It was shown that using MOS-structures in such oscillator one can provide wide band of the oscillation frequency variation. But in this band the variations of the oscillation frequency are accompanied by significant variations of the oscillation amplitude. To decrease these variations the automatic amplitude stabilization circuit was offered. Results of these circuit approximate analytic calculations were checked by calculations of particular frequency tuned oscillator by means of polyharmonic method.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126989739","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}

{"title":"Stochastic Filtration for Moving Intensity of Poisson Flow with Random Jumps at Random Moments","authors":"O. A. Shorin, A. Shorin, G. O. Bokk","doi":"10.1109/SYNCHROINFO49631.2020.9166038","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166038","url":null,"abstract":"A wide range of events in Queuing networks, stock exchanges, and automatic systems can be described by a Poisson flow model with changing intensity that undergoes random jumps at a priori unknown moments. The direct solution of the identification problem in such conditions leads to algorithms with exponential complexity. An asymptotically optimal ML filtering algorithm for observed Poisson flow with polynomial computational complexity is proposed. It is shown that the optimal estimates of the moments of jumps must coincide with one of the moments of the observed events.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115324299","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}

{"title":"Modeling of The Microwave Oscillator Steady-State Mode, which Use a Dielectric Resonator","authors":"V. Gevorkyan, V. Kochemasov, Y. Kazantsev, S. Mikhalin, A. Chenakin","doi":"10.1109/SYNCHROINFO49631.2020.9166117","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166117","url":null,"abstract":"A variant of steady-state mode modeling of a microwave oscillator with a parallel feedback on the base of the transistor micro-assembly with the oscillating system, which is formed with application of the open dielectric resonator, is examined. Modeling is based on the utilization of a combination of known wave representations and developed circuitry representations of the passive and active components in microwave circuits.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"542 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115327626","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}

{"title":"Study on the Assessment of the Quality of Experience of Streaming Video","authors":"A. Ivchenko, Pavel Kononyuk, A. Dvorkovich, L. Antiufrieva","doi":"10.1109/SYNCHROINFO49631.2020.9166092","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166092","url":null,"abstract":"Dynamic adaptive streaming over HTTP provides the work of most multimedia services, however, the nature of this technology further complicates the assessment of the QoE (Quality of Experience). In this paper, the influence of various objective factors on the subjective estimation of the QoE of streaming video is studied. The paper presents standard and handcrafted features, shows their correlation and p-Value of significance. VQA (Video Quality Assessment) models based on regression and gradient boosting with SRCC reaching up to 0.9647 on the validation subsample are proposed. The proposed regression models are adapted for applied applications (both with and without a reference video); the Gradient Boosting Regressor model is perspective for further improvement of the quality estimation model. We take SQoE-III database, so far the largest and most realistic of its kind. The VQA (video quality assessment) models are available at https://github.com/AleksandrIvchenko/QoE-assesment","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116768333","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}

{"title":"Optimization of the Placement Topology of Spatially Distributed Receiving and Transmitting Posts for the Detection of Small UAVs in the Conditions of a “Smart City”","authors":"D. S. Chirov, Y. Kochetkov","doi":"10.1109/SYNCHROINFO49631.2020.9166037","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166037","url":null,"abstract":"Introduced in almost all megacities of the world, the concept of “smart city” implies the integration of information and communication technologies for the management of urban property. This concept is designed to make the life of people in the city better and more convenient. One of the directions of the development of the “smart city” is the active use of unmanned vehicles in urban space, including unmanned aerial vehicles. Already, UAVs are actively used for filming urban mass events for media coverage, traffic control, delivery of small loads, etc. Experts' forecasts indicate an inevitable increase in the number of UAVs used in urban space in the next 2–3 years. Under such conditions, the problem arises of controlling the movement of UAVs in the airspace of the city. This task is especially acute when monitoring small UAVs. This is through difficulties in installing on-board transponders for air traffic control systems on such UAVs due to the small dimensions of the UAV and restrictions on the payload mass. Also, the experience of recent years shows, small UAVs can be used by terrorist organizations to carry out terrorist acts. One of the ways to organize UAV air traffic control in urban space and to detect UAV intruders is to use low-power multi-position radar systems. This article is devoted to the optimization of the placement topology of spatially distributed transceiver posts for the detection of small UAVs in the conditions of a “smart city”. In particular, the procedure of optimization of the position placement for the case of “one transmitting position - many receiving positions” is considered taking into account the accuracy of multi-position location of UAVs. Based on the simulation results for the case of “one transmitting position - many receiving positions”, the following results were obtained: optimum by the criteria of the maximum volume or by the criteria of the maximum coverage area is the uniform circular placement of receiving positions around the betraying one, while optimization reduces to find the radius of the circle at which the volume or coverage area is maximized, i.e. optimization is one-dimensional; the volume of the coverage area of a multi-position radar is much bigger than the volume of the coverage area of a single-position radar with one transmitting and receiving position; to perform multi-position location, detect UAVs from different angles and determine the full speed of the target, you can spread the receiving positions and arrange them in a circle around the transmitting position, sacrificing the volume of the coverage area; the accuracy of determining the location will increase with increasing distance from the transmitting position until the signal-to-noise ratio drops so much that the accuracy of determining the location begins to decrease, while the volume of the coverage area decreases. There is an optimal removal of receiving positions from the transmitting one, which ensures the smallest root mean ","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125570529","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}

{"title":"Processing Multicarrier Phase Coded Signals with OFDM on the USRP Platform for NVIS Sounding of HF Radio Channels","authors":"N. Ryabova, D. Ivanov, V. Ivanov, A. Elsukov","doi":"10.1109/SYNCHROINFO49631.2020.9166059","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166059","url":null,"abstract":"We proposed to use a wideband multicarrier phase coded signal (MCPC) and orthogonal subcarrier multiplexing for vertical sounding. Approach involved phase coding by the Barker pseudorandom sequence and compression of partial signals in the time domain. The models of such spread spectrum signals were studied and methods for their processing at the reception were developed. Algorithms are adapted to the devices based on SDR technology. Their software implementation was verified with the use of USRP - 210 hardware platform in laboratory experiments.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122648017","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}

{"title":"Developing Spherical Mobile Devices for Indoor Exploration","authors":"E. V. Potapov, A. A. Ipatov, A. Priorov, A. Romanov","doi":"10.1109/SYNCHROINFO49631.2020.9166095","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166095","url":null,"abstract":"Computer vision systems and algorithms are designed to process digital images and extract necessary information from it. In this research we propose computer vision system consisting of several spherical mobile devices with digital camera and microcomputer inside. Device's design, basic characteristics and current results, as well as steps for further actions to improve the system are described below in the paper. At the core of image processing OpenCV library and modern convolutional neural networks such as YOLOv3, MobileNETSSDv2 are used.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121421147","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}

{"title":"Frequency-Scan Array Antennas of Three-Dimensional Surveillance Radars","authors":"A. V. Suchkov, V. I. Vinnikov","doi":"10.1109/SYNCHROINFO49631.2020.9166004","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166004","url":null,"abstract":"The development of frequency-scan array antennas of three-dimensional air surveillance radars is briefly analyzed. According to the materials of Russian and foreign open sources a review of such antennas and the analysis of technical solutions for their implementation in the different frequency bands are presented. The basic types of used frequency-scan antennas, starting from simplest to monopulse are considered. Some of required parameters and the implemented characteristics are given.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"849 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120883051","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}

{"title":"Digital Oscillators Noise Characteristics","authors":"A. Luchinin, I. Malygin","doi":"10.1109/SYNCHROINFO49631.2020.9166071","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166071","url":null,"abstract":"Digital modulated signals are a new modern element of transmitting devices that allows you to create high-quality complex signals. In this paper, the characteristics and capabilities of the AD9957 digital upconverter (DUC), which has a low level of phase noise, are studied. Positive results were obtained for creating signals that successfully meet the requirements for electromagnetic compatibility with the exception of out-of-band noise components. The report presents the results of measurements of the DUC AD9957 amplitude and phase noise levels. An increased level of amplitude noise was detected 20 dB higher than the level of phase noise. The results of measurements of noise levels of modern digital standard generators and for comparison – noise characteristics of analog quartz generators are presented. A significant excess of the amplitude noise level above the phase noise level was also found in the SMA 100 type generator (Rohde&Schwartz). This ratio is not observed in low-noise analog generators.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115125008","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}

{"title":"Definition of Parameters of the Source of Error Model for Communication Systems with Mobile Objects","authors":"V. Shestakov, I. V. Manonina","doi":"10.1109/SYNCHROINFO49631.2020.9166053","DOIUrl":"https://doi.org/10.1109/SYNCHROINFO49631.2020.9166053","url":null,"abstract":"In theoretical studies of the issues of encoding, transmission and decoding digital information, one often uses the concept of a discrete communication channel. Of greatest interest are errors determined by the parameters of the radio path, in particular associated with fading. Numerous studies conducted in communication with mobile objects in the microwave range have shown that in this case the most representative is the description of fading using the Rayleigh distribution. Based on this, the model parameters were determined, taking into account the characteristics of the radio path. The features of calculating the elements of the transition probability matrix are determined.","PeriodicalId":255578,"journal":{"name":"2020 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124576810","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}