{"title":"All-in-View Time Difference Solution for eLoran","authors":"A. Grunin, S. Sai, B. Zakirov","doi":"10.1109/WECONF51603.2021.9470709","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470709","url":null,"abstract":"Pulse-phase radio navigation systems operating in the low frequency range used to perform the task of backing up global navigation satellite systems. The reasons for this were the low power of GPS signals, as well as their vulnerability to random or targeted interference. In the first part of the article, the main methods of obtaining the coordinates of the receiver are indicated when receiving several radio navigation chains. This is a hyperbolic method and a pseudorange method. These methods have both advantages and disadvantages associated with the fact that in many regions the pulse-phase radio navigation stations are not fully modernized. The article presents an iterative algorithm for converting the differences in the arrival times of radio pulses from all chains received in the region into geographic coordinates, regardless of whether the chains have synchronization of secondary stations with UTC. This method successfully removes the limitations of the hyperbolic method and the pseudorange method indicated in the article.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"23 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":"129866604","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":"Automatic Image Processing of Locator Sensors. Main Problems of Processing Radar, Sonar and Optoelectronic Images","authors":"A. Y. Zilinberg, Y. Korneev","doi":"10.1109/WECONF51603.2021.9470563","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470563","url":null,"abstract":"The article analyzes the typical conditions for the functioning of locator systems for various purposes. The general problems of processing location images are considered: radar, sonar, optoelectronic. The problems of analyzing radar images of a surveillance radar at various stages of processing are considered particularly. The characteristic features of such images are described. Examples of various interference-target situations are given. The problems of analysis of sonar images of highly automated sonar systems are commented in detail. A classification of the characteristic features for the sidescan sonar and near field sonar is given. A set of methods for overcoming the problems of a priori uncertainty and non-stationarity of the signal-interference environment is commented. The problems of the analysis of optoelectronic images are described. They are systematized and classified by the features of images for different conditions of observation of marine optoelectronic systems. Comments on processing when various objects of brightness are detected in the image are given.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"5 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":"128430645","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":"Using Machine Learning Techniques to Identify Bot Accounts on a Social Network","authors":"D. A. Belokurov, E. S. Shamakova, V. Kolomoitcev","doi":"10.1109/WECONF51603.2021.9470605","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470605","url":null,"abstract":"The purpose of the work was to study the problem of identifying bot accounts in social networks. Bot identification is a classification of user accounts based on the analysis of account parameters and publications. The paper provides an overview of machine learning-based bot detection methods such as decision tree, logistic regression, and naive Bayes classifier. A neural network classification model based on the morphological analysis of user publications has been designed and implemented. Evaluation of the effectiveness and comparative analysis of the models was carried out according to several criteria of effectiveness. The efficiency of the application of the neural network model, which conducts the morphological analysis of publications, is shown, not only from the point of view of the complex coefficient of estimation of the operating time and the classification accuracy, but also from the point of view of the correctness of the classification, under the conditions of humanlike behavior of bots.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"38 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":"129120763","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":"Reducing Energy Consumption in the IoT Systems with Unlimited Number of Devices","authors":"A. Borisovskaya, A. Turlikov","doi":"10.1109/WECONF51603.2021.9470596","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470596","url":null,"abstract":"This paper considers a model of the Internet of Things (IoT) system with a potentially unlimited number of devices. In such systems, a large number of conflicts arises that leads to retransmissions of messages. A large number of retransmissions causes transmitter operation time growth. More transmitting time in turn increases energy consumption and reduce device battery life. For considered model a method is proposed. The method allows to reduce the average number of retransmissions for the given intensity of the input stream. As a consequence, energy consumption can be reduced. This method combines numerical computation and simulation.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"101 32","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945381","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":"IoMT Technology as the Basis of Wearable Online Monitors for Space Distributed Monitoring Systems for Pregnant Women","authors":"Z. Yuldashev, A. Sergeev, N. Nastueva","doi":"10.1109/WECONF51603.2021.9470556","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470556","url":null,"abstract":"The IoMT technology for development of global systems for monitoring of pregnant women's health state is considered. Monitoring is carried out remotely, transparently for a woman, without involving her in the intricacies of the process of interaction with a medical institution. The prospects for the widespread use of IoMT in online monitoring devices in the Russian Federation especially in the context of pandemics are assessed. Requirements are given and existing problems of a general nature are shown related mainly to the implementation of communications in the monitoring system.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"479 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":"125627258","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 Transmission Function of the Diffraction Grating for Operation in Higher Orders","authors":"V. Kazakov","doi":"10.1109/WECONF51603.2021.9470684","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470684","url":null,"abstract":"The paper considers the issue of increasing the efficiency of using higher diffraction orders of an amplitude transmitting diffraction grating for the purposes of spectral analysis of optical radiation. The topology of a high-order diffraction grating is proposed, which is represented by alternating transparent and opaque strokes of different widths. This topology makes it possible to significantly increase the diffraction efficiency in the 3rd and 4th orders. Ways of further improving the topology of a high-order diffraction grating are investigated. An algorithm and its software implementation in the MATLAB system are presented for finding the transmission function of an amplitude diffraction grating for the most efficient use of the specified higher diffraction orders. The results of calculations of the parameters of the grooves of the diffraction grating in relative units for using the second order of diffraction with effective suppression of neighboring orders are presented.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"48 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":"131767978","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}
M. Egorov, I. Kovalenko, M. Makarova, K. A. Isanov, D. V. Dzhan
{"title":"Transmission and Processing of Information Using Two-Stream Neutrino Communication","authors":"M. Egorov, I. Kovalenko, M. Makarova, K. A. Isanov, D. V. Dzhan","doi":"10.1109/WECONF51603.2021.9470713","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470713","url":null,"abstract":"The paper considers the problem of organizing neutrino communication. The search for options to increase the data transfer rate was performed. For this, an analysis is carried out and the concept of multichannel neutrino communication is presented, and its physical implementation is described. It is proposed to create a second channel for data transmission using the quantum oscillation effect by dividing the neutrino flux into different flavors. The quantum oscillation effect is considered in detail, including its applied use. Calculated estimates are made of the maxima and minima of the crests of oscillatory waves from the neutrino energy. Interpretation and use of the obtained data have shown the applicability of the proposed approach for the implementation of data transmission by splitting the stream by the quantum oscillation effect.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"45 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":"130865543","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":"Measurement of Surface Acoustic Waves Velocity in the Piezo Substrate","authors":"A. R. Zhezherin, A. S. Paraskun","doi":"10.1109/WECONF51603.2021.9470503","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470503","url":null,"abstract":"At designing and making various SAW devices, it's important to know the velocity of the surface waves in a piezoelectric substrate with high accuracy. Currently, broadband vector analyzers are used for measurements. They allow registering changes in the input frequency characteristics of passive two-port networks with high-frequency accuracy in a wide frequency range. At making various SAW equipment, reflective elements in the form of grooves and metal stripes are used on the surface of the piezo substrate. A special topology SAW device was developed, [Zin (jw)| of which changed its parameters in the frequency domain with a change in SAW velocity in a substrate. The applied vector analyzer made it possible to register these changes with high accuracy. The combination of a patented device topology with a broadband vector analyzer has created a patented technique for measuring SAW velocity in the substrate with high accuracy. In this paper, a method for measuring the speed of a SAW in a piezo-substrate using the original topology of a SAW device and a vector analyzer is considered. The characteristics of the device used in the measurements and the method for measuring the speed are described, and the measurement accuracy is estimated.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"8 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":"127797491","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":"Information Approach to Estimation of an Optical Spectral Device Efficiency","authors":"M. Vaganov","doi":"10.1109/WECONF51603.2021.9470578","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470578","url":null,"abstract":"An approach that allows to estimate and compare the efficiency of optical spectral devices of various classes is proposed in this paper. This approach was developed in the frame of information theory and the main criterion is the amount of information received by the spectral device during measurement. An exhaustive characteristic of a spectral device is the spread function, which is determined by the error of the device. The relationship between the amount of information received by the spectral device and its error was mathematically determined to estimate the obtained measurement accuracy. The term of information efficiency of a spectral device was introduced. It characterizes the consistency of the properties of the device and the measured process.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"113 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":"115673623","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}
T. N. Torgash, A. Kozlov, N. A. Chirikov, V. Strunin
{"title":"Analysis of Ladder Filters based on Solidly Mounted Resonators with Aluminum Nitride Thin Film","authors":"T. N. Torgash, A. Kozlov, N. A. Chirikov, V. Strunin","doi":"10.1109/WECONF51603.2021.9470544","DOIUrl":"https://doi.org/10.1109/WECONF51603.2021.9470544","url":null,"abstract":"$T$- and U-shared links of ladder filters based on microelectronic BAW resonators with a Bragg reflector are considered. The BAW resonator with a piezoelectric aluminum nitride thin film operated at a frequency of 3.7 GHz and has a quality factor of 518 is fabricated. The analytical studies of the electrical characteristics of ladder filters are presented. It is shown that ladder filter with a relative bandwidth of the order of 1 % can be obtained based on the resonators with resonance bandwidth equal to 10…15 MHz. The minimum insertion loss of the ladder filter is -2.9 dB. The maximum guaranteed attenuation in the stopband at 5 % offset is -41.4 dB for a U-shared link with three BAW resonators.","PeriodicalId":267775,"journal":{"name":"2021 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF)","volume":"6 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":"121914369","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}