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2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)最新文献

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OFDM signal bandwidth selection for indoor positioning system 室内定位系统OFDM信号带宽选择
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7936652
M. Pola, P. Bezousek, Jiri Skapa, Karel Juryca
{"title":"OFDM signal bandwidth selection for indoor positioning system","authors":"M. Pola, P. Bezousek, Jiri Skapa, Karel Juryca","doi":"10.1109/RADIOELEK.2017.7936652","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7936652","url":null,"abstract":"In GPS denied environments like buildings there was unimaginable to wirelessly and electronically track members of rescue squads still few years ago. With today technologies the situation changed but there are still sever challenges to such system. Perhaps the most serious one is a direct signal separation from a bunch of its replicas caused by a multipath propagation. The aim of this article is to assess the problem of accurate direct signal time of arrival measurement in this situation. In the article the model of broadband transmitted and received signals modulated by OFDM are presented and methods of the direct signal delay estimation are described. Later the proper bandwidth for a sub meter accuracy of the range estimation is proposed based on modeling.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"29 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116348732","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
CFOA-based fractional-order oscillator design and analysis with NILT method 基于cfoa的分数阶振荡器设计与NILT分析
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937600
A. Kartci, L. Brancík
{"title":"CFOA-based fractional-order oscillator design and analysis with NILT method","authors":"A. Kartci, L. Brancík","doi":"10.1109/RADIOELEK.2017.7937600","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937600","url":null,"abstract":"In this paper, a fractional-order oscillator based on current-feedback operational amplifiers (CFOAs) is presented. The design parameters such as frequency of oscillation, condition of oscillation, and stability criteria are given in general. To demonstrate the effect of fractional-order on design parameters, some special cases are shown. The numerical results of different fractional-order oscillators are presented to validate the analytical formulas.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116469748","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: 3
Event-driven stereo vision algorithm based on silicon retina sensors 基于硅视网膜传感器的事件驱动立体视觉算法
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937602
F. Eibensteiner, H. Brachtendorf, J. Scharinger
{"title":"Event-driven stereo vision algorithm based on silicon retina sensors","authors":"F. Eibensteiner, H. Brachtendorf, J. Scharinger","doi":"10.1109/RADIOELEK.2017.7937602","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937602","url":null,"abstract":"In this paper a new stereo matching concept for event-driven silicon retinae is presented. The main contribution of the proposed approach is the correlation of incoming events. As a novelty, not only the spatial information is used, but also the time of occurrence of the events as a part of the similarity measure. Stereo matching is used in depth generating camera systems for solving the correspondence problem and for 3D reconstruction of the sensed environment. In fact, using conventionally frame-based cameras, this is a time consuming and computationally expensive task, especially for high frame rates and spatial resolutions. An event-based silicon retina delivers events only on illumination changes and completely asynchronous in time. The sensor provides no frames, but a time-continuous data stream of intensity differences and thus inherently reduces the visual information to a minimum. This paper focuses on an event-based stereo matching algorithm implemented in hardware on a field programmable gate array (FPGA) that allows a reliable matching of the sparse input event data. Furthermore, the approach is compared to other standard frame-based and event driven stereo methods. The results show that the achieved depth map outperforms other algorithms in terms of accuracy and the calculation performance of the hardware architecture is in the range or still higher than state-of-the-art computing platforms.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121855515","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: 4
Experimental electromagnetic characterization of composite joints: Theoretical background 复合材料接头的实验电磁特性:理论背景
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937575
D. Krutilek, Z. Raida
{"title":"Experimental electromagnetic characterization of composite joints: Theoretical background","authors":"D. Krutilek, Z. Raida","doi":"10.1109/RADIOELEK.2017.7937575","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937575","url":null,"abstract":"In the paper, a procedure of experimental characterization of composite joints is proposed. The procedure combines an equivalent-circuit approach and an auto-balancing bridge method. Functionality of the procedure was tested on a screw joint on the composite.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123869670","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
Analysis of short - base multistatic systems receiving aircraft transponders signals 接收飞机应答器信号的短基多基地系统分析
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937580
P. Bezousek, M. Pola
{"title":"Analysis of short - base multistatic systems receiving aircraft transponders signals","authors":"P. Bezousek, M. Pola","doi":"10.1109/RADIOELEK.2017.7937580","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937580","url":null,"abstract":"In the paper a mathematical model of a short-base multistatic system using aircraft transponder signals is presented. Several system modifications, combining a hyperbolic TDOA system, elliptical system using its own interrogator, angle measurement system and system exploiting the altitude information from the aircraft are simulated and analyzed. Their horizontal and vertical position estimation RMS errors are compared and possibilities of ADS-B based positioning system reliability enhancement are proposed.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"2017 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125770139","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
The point cloud visualisation for rotary optical rangefinders 旋转式光学测距仪的点云可视化
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937589
P. Chmelar, L. Beran, L. Rejfek, Natalija Chmelařová
{"title":"The point cloud visualisation for rotary optical rangefinders","authors":"P. Chmelar, L. Beran, L. Rejfek, Natalija Chmelařová","doi":"10.1109/RADIOELEK.2017.7937589","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937589","url":null,"abstract":"This paper describes the point cloud visualization for rotary optical rangefinders. Measured distance data with image information from captured frames give a possibility to create a colored point cloud. The distance is measured by the vertical laser line and to select a color value directly from an actual measured frame is not possible. For this reason, the previous measurement frame is used. The individual frames shifting is estimated by the temple matching algorithm. The purpose of the paper is to show how easily it is possible to combine measurement data with image information in case of a color point cloud construction. The paper includes several examples of different point clouds to verify the algorithm's ability.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125142740","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: 3
Construction of basic graphic elements library for geoinformation ecological monitoring system 地理信息生态监测系统基本图形要素库的构建
2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA) Pub Date : 2017-04-01 DOI: 10.1109/RADIOELEK.2017.7937585
N. Akinina, S. Gusev, A. Kolesenkov, A. Taganov
{"title":"Construction of basic graphic elements library for geoinformation ecological monitoring system","authors":"N. Akinina, S. Gusev, A. Kolesenkov, A. Taganov","doi":"10.1109/RADIOELEK.2017.7937585","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2017.7937585","url":null,"abstract":"An approach to the formation of operational visibility and ecological risks scene displaying in geographic information systems (GIS) of environmental protection is offered. The approach is based on structural-symbolic method of presenting the basic graphic elements (BGE) (models) of ecological risks, the linguistic rules and grammar construction of BGE on the basis of a given set of contours, BGE connectivity graph and set-theoretic operations of ecological risk maps synthesis using GIS. The main methods of structural electronic BGE library construction described in the article: direct structural-symbolic method of ecological risks graphical models representing; linguistic method of representing the alphabet and ecological risk models; program and program-linguistic method for representing the alphabet of basic graphic models of ecological risks.","PeriodicalId":160577,"journal":{"name":"2017 27th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116123846","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: 4
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