Pub Date : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564404
V. Zemlyakov, A. Filimonov, S. Vainshtein, V. Egorkin, A. Fotiadi
The aim of the work is to create a miniature pulse optical lidar on an infrared laser diode by means of highly effective avalanche switching in bipolar silicon transistors. Confident operation of the optical switch board at a frequency of 10 kHz with a dynamic charging circuit has been achieved. The ways of increasing the radiation power, increasing the repetition rate of pulses (necessary to improve the accuracy of the lidar) are considered.
{"title":"Investigation Principles of Creation of Nanosecond Laser Driver with Operating Frequency up to 10 kHz","authors":"V. Zemlyakov, A. Filimonov, S. Vainshtein, V. Egorkin, A. Fotiadi","doi":"10.1109/EEXPOLYTECH.2018.8564404","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564404","url":null,"abstract":"The aim of the work is to create a miniature pulse optical lidar on an infrared laser diode by means of highly effective avalanche switching in bipolar silicon transistors. Confident operation of the optical switch board at a frequency of 10 kHz with a dynamic charging circuit has been achieved. The ways of increasing the radiation power, increasing the repetition rate of pulses (necessary to improve the accuracy of the lidar) are considered.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134593863","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564371
A. P. Rachitskaya, I. Tsikin
In this work we consider the optimum antenna array signal processing for spoofing interference detection to provide GNSS integrity monitoring procedure. In accordance to generalized likelihood ratio test (GLRT) we constructed decision-making algorithm when there is no a priori information about the coordinates of both the user and the false navigation signal source. Since the practical implementation of such algorithm requires large computational costs, we also consider another algorithm, which is optimized for the situation when these coordinates are accurately known. However, we examine the second algorithm in the situation of a priori uncertainty about user's coordinates, i.e. in some uncertainty area. Comparative analysis of the mentioned algorithms was processed in terms of probability-based characteristics obtained as the result of statistical simulation procedure in Matlab. Finally, the value of the uncertainty area size is established, when the efficiency loss of the second algorithm in comparison with the first one is within acceptable limits.
{"title":"GNSS Integrity Monitoring in Case of a Priori Uncertainty About User's Coordinates","authors":"A. P. Rachitskaya, I. Tsikin","doi":"10.1109/EEXPOLYTECH.2018.8564371","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564371","url":null,"abstract":"In this work we consider the optimum antenna array signal processing for spoofing interference detection to provide GNSS integrity monitoring procedure. In accordance to generalized likelihood ratio test (GLRT) we constructed decision-making algorithm when there is no a priori information about the coordinates of both the user and the false navigation signal source. Since the practical implementation of such algorithm requires large computational costs, we also consider another algorithm, which is optimized for the situation when these coordinates are accurately known. However, we examine the second algorithm in the situation of a priori uncertainty about user's coordinates, i.e. in some uncertainty area. Comparative analysis of the mentioned algorithms was processed in terms of probability-based characteristics obtained as the result of statistical simulation procedure in Matlab. Finally, the value of the uncertainty area size is established, when the efficiency loss of the second algorithm in comparison with the first one is within acceptable limits.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134620439","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564412
D. Denisenko, N. Prokopenko, Y. Ivanov, E. A. Zhebrun
A new topology of the band-pass active RC filter (BP) based on the classic Wien bridge is proposed. This scheme, implemented on two Op-Amps, is recommended for the use as a second-order link in more complex BPs. The analysis of the modified band-pass ARC filter is carried out, the main parameters of the BP are found. The computer simulation of the developed PF tuning algorithm is completed. The graphs of changes in the frequency response and phase response when changing various parameters of the BP are obtained. It is shown that in the considered BP an independent adjustment of the main parameters is ensured - transmission coefficient in the passband, pole attenuation and pole frequency.
{"title":"Band-Pass ARC-Filter Based on the Classical Wien Bridge with the Pole Frequency Rise and Independent Adjustment of the Main Parameters","authors":"D. Denisenko, N. Prokopenko, Y. Ivanov, E. A. Zhebrun","doi":"10.1109/EEXPOLYTECH.2018.8564412","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564412","url":null,"abstract":"A new topology of the band-pass active RC filter (BP) based on the classic Wien bridge is proposed. This scheme, implemented on two Op-Amps, is recommended for the use as a second-order link in more complex BPs. The analysis of the modified band-pass ARC filter is carried out, the main parameters of the BP are found. The computer simulation of the developed PF tuning algorithm is completed. The graphs of changes in the frequency response and phase response when changing various parameters of the BP are obtained. It is shown that in the considered BP an independent adjustment of the main parameters is ensured - transmission coefficient in the passband, pole attenuation and pole frequency.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1987 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131089572","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564365
D. Karov, A. Puro
This work presents an application of integrated photoelasticity for non-destructive reconstructions of residual stresses in an axially symmetric gradient index (GRIN) optical structure. Transformation of the polarization of light is measured in a plane orthogonal to the optical axis of the article. Stresses are determined within the framework of the Maxwell piezo-optic law (linear dependence of the permittivity tensor on stresses) and small rotation of principal stress axis. This paper generalizes the method of integrated photoelasticity for the case of the curving translucente rays.
{"title":"Integrated Photoelasicity of Residual Stresses in Axysimmetric GRIN Optical Structures","authors":"D. Karov, A. Puro","doi":"10.1109/EEXPOLYTECH.2018.8564365","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564365","url":null,"abstract":"This work presents an application of integrated photoelasticity for non-destructive reconstructions of residual stresses in an axially symmetric gradient index (GRIN) optical structure. Transformation of the polarization of light is measured in a plane orthogonal to the optical axis of the article. Stresses are determined within the framework of the Maxwell piezo-optic law (linear dependence of the permittivity tensor on stresses) and small rotation of principal stress axis. This paper generalizes the method of integrated photoelasticity for the case of the curving translucente rays.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134335674","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564389
A. Petrov, V. E. Shabanov, D. V. Zalyotov, V. Davydov, A. Bulyanitsa, D. V. Shapovalov
The paper substantiates the necessity of currently used quantum frequency standards modernization for solving various problems. One of the directions of quantum frequency standard modernization is proposed, in particular, the development of a new design of a frequency synthesizer for improving metrological characteristics of quantum frequency standard. Results of experimental studies show the effectiveness of the new development application.
{"title":"Modernization of the Frequency Synthesizer of Cesium Atomic Clock","authors":"A. Petrov, V. E. Shabanov, D. V. Zalyotov, V. Davydov, A. Bulyanitsa, D. V. Shapovalov","doi":"10.1109/EEXPOLYTECH.2018.8564389","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564389","url":null,"abstract":"The paper substantiates the necessity of currently used quantum frequency standards modernization for solving various problems. One of the directions of quantum frequency standard modernization is proposed, in particular, the development of a new design of a frequency synthesizer for improving metrological characteristics of quantum frequency standard. Results of experimental studies show the effectiveness of the new development application.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"2144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130013038","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564380
Ilnur R. Ishkaev, A. Belov, S. Zavjalov
Problems of pulse detection with unknown parameters are discussed. Detection of long pulse signals if the pulse duration exceeds duration of the detector sliding windows is considered. A widely used adaptive detector with sliding windows, known as cell averaging constant false alarm rate (CA-CFAR) detector, is investigated in detail. It is shown, that the use of long guard intervals between the analyzed sample and the sliding windows helps to significantly increase the probability of correct detection of long pulse signals. It is also shown that the use of different lengths of these guard intervals helps to increase the probability of correct detection of pulse trains in comparison with the use of identical interval lengths. The results are not limited to CA-CFAR detectors since many other types of adaptive detectors using sliding windows for noise level estimation suffer from similar problems.
{"title":"Influence of Guard Intervals Length on Detection of Long Pulse Signals","authors":"Ilnur R. Ishkaev, A. Belov, S. Zavjalov","doi":"10.1109/EEXPOLYTECH.2018.8564380","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564380","url":null,"abstract":"Problems of pulse detection with unknown parameters are discussed. Detection of long pulse signals if the pulse duration exceeds duration of the detector sliding windows is considered. A widely used adaptive detector with sliding windows, known as cell averaging constant false alarm rate (CA-CFAR) detector, is investigated in detail. It is shown, that the use of long guard intervals between the analyzed sample and the sliding windows helps to significantly increase the probability of correct detection of long pulse signals. It is also shown that the use of different lengths of these guard intervals helps to increase the probability of correct detection of pulse trains in comparison with the use of identical interval lengths. The results are not limited to CA-CFAR detectors since many other types of adaptive detectors using sliding windows for noise level estimation suffer from similar problems.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122072041","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564402
S. Logunov, M. G. Vysoczky, V. Davydov, O. Titova
The new photometric method based on a ferrofluid cell for recording variations in the magnetic field is considered. The possibility of determining the magnetic object position in the placement zone by quantum sensor is established. The need to use of change in diffraction pattern structure from the laser radiation passing through the ferofluid cell is justified. The results of experimental studies are presented.
{"title":"On the Possibility of Using the Photometric Method for Monitoring the Position of a Mobile Marine Object","authors":"S. Logunov, M. G. Vysoczky, V. Davydov, O. Titova","doi":"10.1109/EEXPOLYTECH.2018.8564402","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564402","url":null,"abstract":"The new photometric method based on a ferrofluid cell for recording variations in the magnetic field is considered. The possibility of determining the magnetic object position in the placement zone by quantum sensor is established. The need to use of change in diffraction pattern structure from the laser radiation passing through the ferofluid cell is justified. The results of experimental studies are presented.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130256339","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564373
D. Akhmetov, A. Korotkov, I. Rumyancev
Paper presents simulation and measurement results of 2.4-2.5 GHz fractional-N frequency synthesizer with integrated voltage controlled oscillator, designed in a standard 0.18 um CMOS technology process, for RFID systems. Phase noise of the designed synthesizer is below −117 dBc/Hz at 1 MHz offset. The output power is −2 dBm, while spur level is below − 79 dBc. Chip area, occupied by the designed circuit, is 1.2 sq. mm.
本文介绍了采用标准0.18 um CMOS工艺设计的带集成压控振荡器的2.4-2.5 GHz分数n频率合成器用于RFID系统的仿真和测量结果。设计的合成器在1mhz偏移时相位噪声低于- 117 dBc/Hz。输出功率为−2dbm，杂散电平低于−79dbc。所设计的电路所占用的芯片面积为1.2平方。毫米。
{"title":"2.4-2.5 GHz Fractional-N Frequency Synthesizer with Integrated VCO in 0.18 um CMOS for RFID Systems","authors":"D. Akhmetov, A. Korotkov, I. Rumyancev","doi":"10.1109/EEXPOLYTECH.2018.8564373","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564373","url":null,"abstract":"Paper presents simulation and measurement results of 2.4-2.5 GHz fractional-N frequency synthesizer with integrated voltage controlled oscillator, designed in a standard 0.18 um CMOS technology process, for RFID systems. Phase noise of the designed synthesizer is below −117 dBc/Hz at 1 MHz offset. The output power is −2 dBm, while spur level is below − 79 dBc. Chip area, occupied by the designed circuit, is 1.2 sq. mm.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124618357","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 : 2018-10-01DOI: 10.1109/eexpolytech.2018.8564436
{"title":"[Title page]","authors":"","doi":"10.1109/eexpolytech.2018.8564436","DOIUrl":"https://doi.org/10.1109/eexpolytech.2018.8564436","url":null,"abstract":"","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123189607","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 : 2018-10-01DOI: 10.1109/EEXPOLYTECH.2018.8564388
D. Prokuratov, A. Davtian, D. Pankin, A. Mikhaylova, A. Povolotckaia, A. Shimko
The investigation of possibility of using lasers with different wavelength and pulse duration to clean the surface of lead and zinc exterior sculptures was held in this work. Comparison of lasers with different durations was done, pcs laser shown the best results in cleaning both of zinc and lead. The measuring of reflectance of corrosion layers indicates minimum in UV part of spectrum, however there were no positive cleaning results using 355nm 25 ns laser. The pulse duration is much more important parameter in preservation of surface during laser cleaning, as shown. Also, the surface state plays significant role – the technology of producing of object and its history of exposition.
{"title":"Analysis of the Possibility of Lasers' Usage for Cleaning Lead and Zinc Exterior Sculpture","authors":"D. Prokuratov, A. Davtian, D. Pankin, A. Mikhaylova, A. Povolotckaia, A. Shimko","doi":"10.1109/EEXPOLYTECH.2018.8564388","DOIUrl":"https://doi.org/10.1109/EEXPOLYTECH.2018.8564388","url":null,"abstract":"The investigation of possibility of using lasers with different wavelength and pulse duration to clean the surface of lead and zinc exterior sculptures was held in this work. Comparison of lasers with different durations was done, pcs laser shown the best results in cleaning both of zinc and lead. The measuring of reflectance of corrosion layers indicates minimum in UV part of spectrum, however there were no positive cleaning results using 355nm 25 ns laser. The pulse duration is much more important parameter in preservation of surface during laser cleaning, as shown. Also, the surface state plays significant role – the technology of producing of object and its history of exposition.","PeriodicalId":296618,"journal":{"name":"2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130673016","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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