Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477399
O. Sadílek, T. Lelek, P. Sýkora, R. Dolecek
This paper describes research activities that have Department of Electrical and Electronic Engineering and Signaling in Transport done in area of control, accumulators and photovoltaic feeding of railway vehicles - the biggest part is focused on experimental research done on narrow-track experimental railway vehicle owned by the department. The paper deals with the description of the experimental vehicle which means the concrete topology of electric drive and the structure of sourcing system (Li-ion LiFePO4 battery and photovoltaic cells). In the article are published the existing results and defined next needed tests.
{"title":"Research of alternative energy sources for railway vehicles","authors":"O. Sadílek, T. Lelek, P. Sýkora, R. Dolecek","doi":"10.1109/RADIOELEK.2016.7477399","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477399","url":null,"abstract":"This paper describes research activities that have Department of Electrical and Electronic Engineering and Signaling in Transport done in area of control, accumulators and photovoltaic feeding of railway vehicles - the biggest part is focused on experimental research done on narrow-track experimental railway vehicle owned by the department. The paper deals with the description of the experimental vehicle which means the concrete topology of electric drive and the structure of sourcing system (Li-ion LiFePO4 battery and photovoltaic cells). In the article are published the existing results and defined next needed tests.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"12372 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129157339","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477350
T. Ivaniga, Ľ. Ovseník, J. Turán
This article focuses on the creation of a four-channel WDM (Wavelength Division Multiplexing) system using SOA (Semiconductor Optical Amplifier) at the speed of 10 Gbps and the spacing of 1nm. In creating an optical network it is necessary to utilise software tools simulating a real optical network under the given conditions. Evaluation of the optical line quality for the respective channel is performed on the basis of BER (Bit Error Rate). The result of the article is a WDM system in a simulated environment evaluating BER at particular stream in SOA. The wavelengths compared were of 1549 nm and 1550 nm at pump current in the SOA: 0.05 A, 0.1 A and 0.2 A.
{"title":"The four-channel WDM system using Semiconductor Optical Amplifier","authors":"T. Ivaniga, Ľ. Ovseník, J. Turán","doi":"10.1109/RADIOELEK.2016.7477350","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477350","url":null,"abstract":"This article focuses on the creation of a four-channel WDM (Wavelength Division Multiplexing) system using SOA (Semiconductor Optical Amplifier) at the speed of 10 Gbps and the spacing of 1nm. In creating an optical network it is necessary to utilise software tools simulating a real optical network under the given conditions. Evaluation of the optical line quality for the respective channel is performed on the basis of BER (Bit Error Rate). The result of the article is a WDM system in a simulated environment evaluating BER at particular stream in SOA. The wavelengths compared were of 1549 nm and 1550 nm at pump current in the SOA: 0.05 A, 0.1 A and 0.2 A.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129167882","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477343
M. Reznicek, P. Bezousek, T. Zálabský, L. Rejfek, P. Chmelar, J. Pidanic, Mohhamd Reza Rezakhah
In this paper a method of clutter maps creation for the Doppler filtering of undesirable echoes in monostatic primary radar is presented. A described algorithm of the received data analysis leads to clutter maps of two types. The first one is a ground clutter map used for stationary echoes cancelation using a standard MTI filter. The second one is a map of the meteo-clutter suppressed by the AMTI filter, where a Doppler frequency estimate is stored in parallel.
{"title":"Clutter maps formation in monostatic primary radar","authors":"M. Reznicek, P. Bezousek, T. Zálabský, L. Rejfek, P. Chmelar, J. Pidanic, Mohhamd Reza Rezakhah","doi":"10.1109/RADIOELEK.2016.7477343","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477343","url":null,"abstract":"In this paper a method of clutter maps creation for the Doppler filtering of undesirable echoes in monostatic primary radar is presented. A described algorithm of the received data analysis leads to clutter maps of two types. The first one is a ground clutter map used for stationary echoes cancelation using a standard MTI filter. The second one is a map of the meteo-clutter suppressed by the AMTI filter, where a Doppler frequency estimate is stored in parallel.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128463758","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477402
Natalija Chmelařová, V. Tykhonov
The composite vector stochastic processes model is usable in many signal processing areas. Advantages of the model utilization, in task of electric motors acoustic signals parametric estimations, are shown in this paper. Models' results are compared with the traditional statistical methods for the signal analysis, in the two samples classes recognition task. The expressions for correlation function, autoregressive models' parameters calculation, and parametric power spectral density estimation in autoregressive composite vector stochastic processes representation, are shown in the paper. The proposed method for signals analysis, presented in this paper, enables to obtain information, which is difficult to gain by using traditional methods of statistical analysis.
{"title":"Composite vector stochastic processes model in the task of signals' recognition","authors":"Natalija Chmelařová, V. Tykhonov","doi":"10.1109/RADIOELEK.2016.7477402","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477402","url":null,"abstract":"The composite vector stochastic processes model is usable in many signal processing areas. Advantages of the model utilization, in task of electric motors acoustic signals parametric estimations, are shown in this paper. Models' results are compared with the traditional statistical methods for the signal analysis, in the two samples classes recognition task. The expressions for correlation function, autoregressive models' parameters calculation, and parametric power spectral density estimation in autoregressive composite vector stochastic processes representation, are shown in the paper. The proposed method for signals analysis, presented in this paper, enables to obtain information, which is difficult to gain by using traditional methods of statistical analysis.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133114510","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477397
O. Fiser, V. Pek, V. Brazda, V. Schejbal
The satellite signal drop can be caused either by atmospheric attenuation (rain, clouds, snow, ...) either by unwanted satellite motion. This contribution demonstrates the software methods to extract the atmospheric attenuation from signal level record influenced by space satellite motion. Contribution is devoted to the construction of so called template (signal course in the case there is no atmospheric attenuation) using clear day signal, Fourier transform and cosine or polynomial approximation.
{"title":"Mathematical elimination of unwanted signal decrease due to satellite spatial motion","authors":"O. Fiser, V. Pek, V. Brazda, V. Schejbal","doi":"10.1109/RADIOELEK.2016.7477397","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477397","url":null,"abstract":"The satellite signal drop can be caused either by atmospheric attenuation (rain, clouds, snow, ...) either by unwanted satellite motion. This contribution demonstrates the software methods to extract the atmospheric attenuation from signal level record influenced by space satellite motion. Contribution is devoted to the construction of so called template (signal course in the case there is no atmospheric attenuation) using clear day signal, Fourier transform and cosine or polynomial approximation.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131848059","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477370
V. Hajduk, M. Broda, O. Kováč, D. Levický
This paper is focused on proposal of image steganographic method that is able to embedding of encoded secret message using Quick Response Code (QR) code into image data. Discrete Wavelet Transformation (DWT) domain is used for the embedding of QR code, while embedding process is additionally protected by Advanced Encryption Standard (AES) cipher algorithm. In addition, typical characteristics of QR code was broken using the encryption, therefore it makes the method more secure. The aim of this paper is design of image steganographic method with high secure level and high non-perceptibility level. The relation between security and capacity of the method was improved by special compression of QR code before the embedding process. Efficiency of the proposed method was measured by Peak Signal-to-Noise Ratio (PSNR) and achieved results were compared with other steganographic tools.
{"title":"Image steganography with using QR code and cryptography","authors":"V. Hajduk, M. Broda, O. Kováč, D. Levický","doi":"10.1109/RADIOELEK.2016.7477370","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477370","url":null,"abstract":"This paper is focused on proposal of image steganographic method that is able to embedding of encoded secret message using Quick Response Code (QR) code into image data. Discrete Wavelet Transformation (DWT) domain is used for the embedding of QR code, while embedding process is additionally protected by Advanced Encryption Standard (AES) cipher algorithm. In addition, typical characteristics of QR code was broken using the encryption, therefore it makes the method more secure. The aim of this paper is design of image steganographic method with high secure level and high non-perceptibility level. The relation between security and capacity of the method was improved by special compression of QR code before the embedding process. Efficiency of the proposed method was measured by Peak Signal-to-Noise Ratio (PSNR) and achieved results were compared with other steganographic tools.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122867105","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477371
M. Repko, J. Gamec, Ján Schneider
This paper describes a simple method for the relative permittivity estimation of the wall by an UWB (ultra wideband) impulse radar system. It is non-invasive reflected free space method for data gathering just from the single side of the wall. There is just one condition also by which we can achieve the best possible accuracy. It is a short time window of monitored signal, while there is an undesired reflection from the other side of the wall. Frequency dependence of the relative permittivity is then obtained from the reflection coefficient of the transmitted TEM (transverse electromagnetic) wave. The paper describes two demonstrative measurements and verification of the measured data by the transmission method.
{"title":"Simple estimation of relative permittivity of wall by UWB radar system","authors":"M. Repko, J. Gamec, Ján Schneider","doi":"10.1109/RADIOELEK.2016.7477371","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477371","url":null,"abstract":"This paper describes a simple method for the relative permittivity estimation of the wall by an UWB (ultra wideband) impulse radar system. It is non-invasive reflected free space method for data gathering just from the single side of the wall. There is just one condition also by which we can achieve the best possible accuracy. It is a short time window of monitored signal, while there is an undesired reflection from the other side of the wall. Frequency dependence of the relative permittivity is then obtained from the reflection coefficient of the transmitted TEM (transverse electromagnetic) wave. The paper describes two demonstrative measurements and verification of the measured data by the transmission method.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128523837","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477414
Matuska Slavomir, Hudec Robert, Hlubik Jan, Talapka Jozef
This paper proposed about comparison of the animal recognition processed on the real world objects and the modeled 3D objects. The object classification consists of the three main steps - feature extraction, training classifier and image evaluation. Feature description is based on locale visual descriptors like SIFT or SURF. Support Vector Machine (SVM) in combination with the bags of visual keypoints (BOW) is used to classify descriptors. The 3D models were created using photogrammetry and 3D modeling for ideal 3D models of mammals. This method of 3D model creation is described in details.
{"title":"A comparison of the animal recognition between the real objects and the modeled 3D objects","authors":"Matuska Slavomir, Hudec Robert, Hlubik Jan, Talapka Jozef","doi":"10.1109/RADIOELEK.2016.7477414","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477414","url":null,"abstract":"This paper proposed about comparison of the animal recognition processed on the real world objects and the modeled 3D objects. The object classification consists of the three main steps - feature extraction, training classifier and image evaluation. Feature description is based on locale visual descriptors like SIFT or SURF. Support Vector Machine (SVM) in combination with the bags of visual keypoints (BOW) is used to classify descriptors. The 3D models were created using photogrammetry and 3D modeling for ideal 3D models of mammals. This method of 3D model creation is described in details.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117154563","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477387
A. Majumder, R. Kaushik, Abir J. Mondal
The interest for ultra-low power integrated circuits in the recent past has guided the research community to establish the proposal of several adiabatic logic circuits in which the energy stored can be efficiently recycled. Many of these architectures suffer from problems like glitch & huge number of transistors as compared to conventional CMOS, which stop them to be used in practical scenario. As a consequence, we tried to come up with a new circuit that could address the above said limitations. In this work, we have proposed a new adiabatic logic where glitches are reduced drastically such that Logic 0 & Logic 1 level looks almost like what we generally have in conventional CMOS circuit output. The new logic is applied to design NOT, NAND & NOR gate as these are the fundamental building blocks of any digital system. The simulation of the circuits is done in 180 nm Technology and a significant savings in power and energy has been achieved after comparing with the conventional CMOS and a few previous well known adiabatic logics.
{"title":"Design and analysis of new energy efficient glitch free adiabatic logic circuit","authors":"A. Majumder, R. Kaushik, Abir J. Mondal","doi":"10.1109/RADIOELEK.2016.7477387","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477387","url":null,"abstract":"The interest for ultra-low power integrated circuits in the recent past has guided the research community to establish the proposal of several adiabatic logic circuits in which the energy stored can be efficiently recycled. Many of these architectures suffer from problems like glitch & huge number of transistors as compared to conventional CMOS, which stop them to be used in practical scenario. As a consequence, we tried to come up with a new circuit that could address the above said limitations. In this work, we have proposed a new adiabatic logic where glitches are reduced drastically such that Logic 0 & Logic 1 level looks almost like what we generally have in conventional CMOS circuit output. The new logic is applied to design NOT, NAND & NOR gate as these are the fundamental building blocks of any digital system. The simulation of the circuits is done in 180 nm Technology and a significant savings in power and energy has been achieved after comparing with the conventional CMOS and a few previous well known adiabatic logics.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114170148","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}
Pub Date : 2016-04-19DOI: 10.1109/RADIOELEK.2016.7477416
M. Konc, R. Dolecek, O. Černý, I. Dobes
The paper deals with comparing the reliability and continuity of supply to traction power systems and compare it with the level of deliveries to all other customers in the distribution area of ČEZ Distribuce. It examines the causes of the disruption of clarity and also shows to the map. The present electric rail transport is very dependent on the continual electrical energy supply both for transport infrastructure and also for electric vehicles and units. In the case of traction energy supply faults the transport of electric drive vehicles will be stopped and the diesel rail vehicles have to be used for rail transport. This situation is incomparable with road transport due to many aspects. These traction power supply systems are highly dependent on the properties of distribution systems. For this reason, the stricter conditions in comparison with industrial systems are required. The characteristic consumptions and their variabilities during tens of seconds at traction systems, which is given by transport technology and management, are represented completely different sources of interference for other devices and systems.
{"title":"The effects of faults at the distribution systems on the traction power supply systems","authors":"M. Konc, R. Dolecek, O. Černý, I. Dobes","doi":"10.1109/RADIOELEK.2016.7477416","DOIUrl":"https://doi.org/10.1109/RADIOELEK.2016.7477416","url":null,"abstract":"The paper deals with comparing the reliability and continuity of supply to traction power systems and compare it with the level of deliveries to all other customers in the distribution area of ČEZ Distribuce. It examines the causes of the disruption of clarity and also shows to the map. The present electric rail transport is very dependent on the continual electrical energy supply both for transport infrastructure and also for electric vehicles and units. In the case of traction energy supply faults the transport of electric drive vehicles will be stopped and the diesel rail vehicles have to be used for rail transport. This situation is incomparable with road transport due to many aspects. These traction power supply systems are highly dependent on the properties of distribution systems. For this reason, the stricter conditions in comparison with industrial systems are required. The characteristic consumptions and their variabilities during tens of seconds at traction systems, which is given by transport technology and management, are represented completely different sources of interference for other devices and systems.","PeriodicalId":159747,"journal":{"name":"2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125470577","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}
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