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Publikācijas

729 publikācijas

2012
Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data

I.Bilinskis, A.Skageris, K.Sudars

Kopsavilkums

I.Bilinskis, A.Skageris, K.Sudars, “Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data”, International conference “Electronics 2012”, Palanga, Lithuania, 18-20 June 2012. <a href="http://www.ee.ktu.lt/electronics/files/E2012_program.pdf" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Method for Wideband Signal Digitizing and their Real-time Reconstruction in Enlarged Dynamic Range

I.Bilinskis, K. Sudars, M. Min

Kopsavilkums

I.Bilinskis, K. Sudars, M. Min, “Method for Wideband Signal Digitizing and their Real-time Reconstruction in Enlarged Dynamic Range”, International conference “Electronics 2012”, Palanga, Lithuania, 18-20 June 2012. <a href="http://www.ee.ktu.lt/electronics/files/E2012_program.pdf" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Accessible, Customizable, High-Performance IEEE 802.11p Vehicular Communication Solution

N. Agafonovs, G. Strazdins, M.Greitans

Kopsavilkums

N. Agafonovs, G. Strazdins, M.Greitans, "Accessible, Customizable, High-Performance IEEE 802.11p Vehicular Communication Solution," in Proc. of International Workshop on Vehicular Communications and Applications (VCA 2012), Aiya Napa, Cyprus, pp. 127-132, June 19, 2012. Abstract Intelligent driving is a promising area for increased safety and comfort. Vehicular communication is an essential part of building such intelligent systems. To provide inter-operability of wide vehicle range, common standards are needed. One of recently established standards for vehicular networks is IEEE 802.11p. However, 802.11p hardware platform market is limited due to protocol immaturity. Existing solutions are complex, expensive and closed-source systems with limited applicability. In this paper we propose an open, accessible and customizable wireless system for vehicular communication supporting IEEE 802.11p protocol. The system consists of low-cost components and open source software suitable for experimental intelligent transportation system research and applications. Nevertheless, real world tests prove feasibility of the system. <a href="http://strazdins.lv/papers/agafonovs2012router.pdf" target="_blank" rel="noopener noreferrer">pdf</a> (G. Strazdins personal page)<a href="http://strazdins.lv/papers/mednis2011androidpotholes.pdf" target="_blank" rel="noopener noreferrer"> </a>
2012
Адаптивный k-up-and-down метод при компараторном стробоскопическом преобразовании сигналов UWB радиолокации

К. Круминьш и В. Плоциньш

Kopsavilkums

К. Круминьш и В. Плоциньш, "Адаптивный k-up-and-down метод при компараторном стробоскопическом преобразовании сигналов UWB радиолокации", "Автоматика и вычислительная техника", Рига, 2012, No.6, c.58-68.
2012
A mini-batch discriminative feature weighting algorithm for lbp - based face recognition

O. Nikisins, M. Greitans

Kopsavilkums

O. Nikisins, M. Greitans. A mini-batch discriminative feature weighting algorithm for lbp - based face recognition. Peoceedings of IEEE International Conference on Imaging Systems and Techniques (IST 2012), pages 170-175, July 2012.
2012
Compression Functions Used in the Algorithms for the Estimation of Signal Arrival Time under High-Precision Event Timing

A. Ribakov

Kopsavilkums

A. Ribakov „Compression Functions Used in the Algorithms for the Estimation of Signal Arrival Time under High-Precision Event Timing” “Automatic Control and Computer Sciences” Vol.46, Number 6, 2012 , Allerton Press, Inc. pp. 288-298. A.Рыбаков. „Использование сжимающих функций в алгоритмах оценивания времени прихода сигналов при прецизионном таймировании событий”. - ”Автоматика и вычислительная техника” - АВТ, Выпуск No.6, 2012, с.69-82. Abstract The possibilities are studied for improving the accuracy of the interpolation method for measuring the event occurrence time based on the digital processing of signals associated with the events. The problem of estimating the time of the analog signal arrival is formulated and solved as a problem of finding a fixed point of some contraction mapping. The compression function is constructed on the basis of spectral coefficients of a trigonometric series that approximates the shape of the analog signal. The accuracy potential of the interpolation measurement technique is illustrated by the results of computer simulation. <a href="http://link.springer.com/content/pdf/10.3103%2FS0146411612060077.pdf" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Извлечение информации из СШП импульсного сигнала с использованием преобразования Карунена-Лоэва

Грейтанс М., Аристов В

Kopsavilkums

Грейтанс М., Аристов В „Извлечение информации из СШП импульсного сигнала с использованием преобразования Карунена-Лоэва” , Вісник Національного університету „Львівська політехніка”, Радіоелектроніка та телекомунікації, № 738 (2012), c 38-42. <a href="http://vlp.com.ua/node/9823" target="_blank" rel="noopener noreferrer">pdf</a>
2012
A Method for Correction of Rural Multispectral Aerial Image Mosaics

I.Mednieks

Kopsavilkums

I.Mednieks. "A Method for Correction of Rural Multispectral Aerial Image Mosaics." Proceedings of the 13th Biennial Baltic Electronics Conference, Tallinn, pp.295-298, 2012.
2012
Measurement signal digitizing based on timing operation providing for complexity-reduced digital filtering

Yu. Artyukh, I. Bilinskis, K. Sudars

Kopsavilkums

Yu. Artyukh, I. Bilinskis, K. Sudars. “Measurement signal digitizing based on timing operation providing for complexity-reduced digital filtering”, Metrology and Measurement Systems.
2012
Signal-dependent analog-to-digital converter based on MINIMAX sampling

I.Homjakovs, M.Hashimoto, T.Hirose and T.Onoye

Kopsavilkums

I.Homjakovs, M.Hashimoto, T.Hirose and T.Onoye, „Signal-dependent analog-to-digital converter based on MINIMAX sampling”, In Proc. of 9th International SoC Design Conference (ISOCC 2012), E-ISBN 978-1-4673-2988-0, pp.120-123, Nov. 2012. Abstract This paper presents a physical implementation of a signal-dependent analog-to-digital converter (ADC), called MINIMAX ADC. This ADC captures a sample every time an analog signal reaches its local maximum or minimum value. In this ADC, sampling naturally adapts to input signal frequency, which enables high data compression rate and power reduction to be achieved. A 8-bit MINIMAX ADC was implemented in 180nm CMOS technology. Measurement results show that the proposed MINIMAX ADC consumes lower power for less active signals, and the power reduction from conventional synchronous ADC is up to 20%. <a href="http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6407054&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6407054" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Reliability enhancement of event timer calibration by using a dual PLL for the calibrating signal generation

V. Vedins, A. Mezeriņš

Kopsavilkums

V. Vedins, A. Mezeriņš. “Reliability enhancement of event timer calibration by using a dual PLL for the calibrating signal generation”. Proc. 13th Biennial Baltic Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, pp.113-114. Abstract An approach to calibration of the DSP-based very high precision event timer is considered. A specific calibration signal is synthesized from the master clock signal by employing a dual PLL circuit. Experimental results obtained by testing a particular event timer confirm high reliability of such solution. <a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6376828&contentType=Conference+Publications" target="_blank" rel="noopener noreferrer">pdf</a>
2012
High-precise determination of correction function for reducing integral non-linearity of DSP-based event timer

Yu. Artyukh, E. Boole, J.Bule

Kopsavilkums

Yu. Artyukh, E. Boole, J.Bule. “High-precise determination of correction function for reducing integral non-linearity of DSP-based event timer.” Proc. 13th Biennial Baltic Electronics Conference (BEC2012), October 3-5, 2012, Tallin, Estonia, pp.303-306. Abstract Effective non-linearity correction is one of the most important problem for development of high-performance event timers based on Digital Signal Processing (DSP) methods. Suggested approach to resolving this problem is based on determination of a correction function using constant period test pulse sequences with seemingly random modular values. It is shown that such an approach allows achieving non-linearity correction with picosecond precision at test pulse sequence lengths quite acceptable for practical applications. Precision of DSP-based event timers can be improved in this way up to a few picoseconds. <a href="http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6376877&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6376877" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data

I.Bilinskis, A.Skageris, K.Sudars

Kopsavilkums

I.Bilinskis, A.Skageris, K.Sudars, “Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data”, International conference “Electronics 2012”, Palanga, Lithuania, 18-20 June 2012. Abstract Specifics of event timing data transmission are experimentally investigated under conditions typical for multi-channel data acquisition from a large quantity of signal sources. The events, in the considered case, are analog input signal and sinusoidal reference function crossings. The sequences of the crossing time instants represent the respective analog input signals and these sequences have to be transmitted to the signal reconstruction subsystem. An experimental system for fast short-distance transmission has been built. It performs data encoding on the basis of digital pulse position modulation with 10 picoseconds resolution. The achievable data encoding resolution and other vital parameters characterizing data transmission systems of this type were evaluated on this basis. <a href="http://www.eejournal.ktu.lt/index.php/elt/article/view/4055" target="_blank" rel="noopener noreferrer">pdf</a>
2012
Using Consolidated Covariance Image for Discrimination of Habitats

R. Dinuls, A. Lorencs, I. Mednieks

Kopsavilkums

R. Dinuls, A. Lorencs, I. Mednieks. "Using Consolidated Covariance Image for Discrimination of Habitats," Proceedings of the 13th Biennial Baltic Electronics Conference, Tallinn, Estonia, pp.299-302, 2012.
2012
SADmote: A Robust and Cost-Effective Device for Environmental Monitoring

Atis Elsts, Rihards Balass, Janis Judvaitis, Reinholds Zviedris, Girts Strazdins, Artis Mednis, and Leo Selavo

Kopsavilkums

Atis Elsts, Rihards Balass, Janis Judvaitis, Reinholds Zviedris, Girts Strazdins, Artis Mednis, and Leo Selavo. SADmote: A Robust and Cost-Effective Device for Environmental Monitoring. A. Herkersdorf et al. (Eds.): ARCS 2012, LNCS 7179, pp. 225–237, 2012. Springer-Verlag Berlin Heidelberg 2012. Abstract Time to deployment for wireless sensor networks could be reduced by using commercial sensor nodes. However, this may lead to suboptimal flexibility, power consumption and cost of the system. Our pilot deployment for precision agriculture and fruit growing research showed similar conclusions and outlined the design decisions leading to SADmote: a new sensor node for environmental monitoring. It was evaluated both in the lab and field, showing improved energy consumption over commercial solutions such as Tmote Sky and Waspmote. <a href="http://www.springerlink.com/content/d4322r4528177727" target="_blank" rel="noopener noreferrer">pdf</a> Springer <a href="http://strazdins.lv/papers/elsts2012sadmote.pdf" target="_blank" rel="noopener noreferrer">pdf</a> (G. Strazdins personal page)
2012
Embedded Solution for Road Condition Monitoring Using Vehicular Sensor Networks

Artis Mednis, Atis Elsts, and Leo Selavo

Kopsavilkums

Artis Mednis, Atis Elsts, and Leo Selavo. Embedded Solution for Road Condition Monitoring Using Vehicular Sensor Networks. The 6th International Conference on Application of Information and Communication Technologies (AICT 2012), Proceedings of the 6th International Conference on Application of Information and Communication Technologies (AICT 2012), pp. 248-252, 2012. IEEE eXpress Conference Publishing, 2012. Abstract The advantages of vehicular sensor networks over common wireless sensor networks include the possibility to cover wide measurement area using relatively small number of sensor nodes as well as not so strong limitations according device dimensions, weight and power consumption. These attractive features are reason for expansion of vehicular sensor networks for various environmental monitoring tasks - from defects of road surface to air quality in urban areas. The contribution of this paper is a customized embedded device dedicated for monitoring of road surface using microphone and accelerometer sensors as well as collection of meteorogical data for creation of detailed road meteorology maps. Selected hardware and software aspects are discussed and the implementation of previously developed method for road surface monitoring using accelerometer data is presented. <a href="http://www.google.com/url?q=http%3A%2F%2Faict.info%2F2012%2Finfo%2FAICT2012-Conference-Program.pdf&sa=D&sntz=1&usg=AFrqEze7PvumOIWwo8CT2eIIoatYcJ9sbg" target="_blank" rel="noopener noreferrer">pdf</a> <a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&tp=&arnumber=6398502" target="_blank" rel="noopener noreferrer">pdf IEEE</a>
2012
Retrieval information from the UWB pulse signal using the Karhunen Loeve transform

Vladimir Aristov, Modris Greitans

Kopsavilkums

Abstract: <div>In the article the results of the Karhunen-Loeve transform in the processing model of UWB pulse signals to retrieval information about the amplitude and phase changes.</div>
2012
SAD: Wireless Sensor Network System for Microclimate Monitoring in Precision Agriculture

A. Elsts, R. Balass, J. Judvaitis and L. Selavo

Kopsavilkums

A. Elsts, R. Balass, J. Judvaitis and L. Selavo, “SAD: Wireless Sensor Network System for Microclimate Monitoring in Precision Agriculture,” in Proceedings of the 5-th international scientific conference Applied information and communication technologies (AICT 2012), Jelgava, Latvia, April 26-27, ISBN 978-9984-48-065-7, pp. 271-281, 2012
2012
Poster Abstract: SEAL: An Easy-to-use Sensor Node Application Development System

A. Elsts, J. Judvaitis and L. Selavo

Kopsavilkums

A. Elsts, J. Judvaitis and L. Selavo, “Poster Abstract: SEAL: An Easy-to-use Sensor Node Application Development System”, 9th European Conference on Wireless Sensor Networks (EWSN 2012), Poster and Demo Proceedings, pp. 31–32, Trento, Italy, 2012.
2012
Receiving system for ionospheric research

J. Trokss, A. Lesins, G. Gaigals, M. Nechaeva, Vl. Bezrukovs.

Kopsavilkums

J. Trokss, A. Lesins, G. Gaigals, M. Nechaeva, Vl. Bezrukovs. Receiving system for ionospheric research. Latvian Journal of Physics and Technical Sciences, december 2012., N6 (Scopus, Tompson Reuter Web of Science, EBSCO).

Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data

Method for Wideband Signal Digitizing and their Real-time Reconstruction in Enlarged Dynamic Range

Accessible, Customizable, High-Performance IEEE 802.11p Vehicular Communication Solution

Адаптивный k-up-and-down метод при компараторном стробоскопическом преобразовании сигналов UWB радиолокации

A mini-batch discriminative feature weighting algorithm for lbp - based face recognition

Compression Functions Used in the Algorithms for the Estimation of Signal Arrival Time under High-Precision Event Timing

Извлечение информации из СШП импульсного сигнала с использованием преобразования Карунена-Лоэва

A Method for Correction of Rural Multispectral Aerial Image Mosaics

Measurement signal digitizing based on timing operation providing for complexity-reduced digital filtering

Signal-dependent analog-to-digital converter based on MINIMAX sampling

Reliability enhancement of event timer calibration by using a dual PLL for the calibrating signal generation

High-precise determination of correction function for reducing integral non-linearity of DSP-based event timer

Experimental Evaluation of Conditions for Short-Distance Transmission of Event Timing Data

Using Consolidated Covariance Image for Discrimination of Habitats

SADmote: A Robust and Cost-Effective Device for Environmental Monitoring

Embedded Solution for Road Condition Monitoring Using Vehicular Sensor Networks

Retrieval information from the UWB pulse signal using the Karhunen Loeve transform

SAD: Wireless Sensor Network System for Microclimate Monitoring in Precision Agriculture

Poster Abstract: SEAL: An Easy-to-use Sensor Node Application Development System

Receiving system for ionospheric research