Temat: UWB - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An Ultra-Wideband System for Vehicle Positioning
Autorzy:: Kolakowski, J.
Cichocki, J.
Makal, P.
Michnowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/226796.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: UWB
vehicle positioning
positioning systems
TDOA
Opis:: Systems supporting traffic safety require precise information on a vehicle position. The paper contains a proposal for a vehicle localization system based on ultra-wideband (UWB) technology. The system allows for vehicle positioning with submeter accuracy. The paper presents a system concept and an algorithm used for position calculation. The algorithm consists in selection of a system configuration in order to decrease the positioning uncertainty. The system concept was verified with a developed system demonstrator. The paper contains a description of the devices comprising the system. Exemplary results of outdoor demonstrator tests are included and discussed. The tests confirmed efficiency and attractiveness of the proposed solution.
Źródło:: International Journal of Electronics and Telecommunications; 2010, 56, 3; 247-256
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zastosowanie technologii Ultra Wideband w magazynie
Application of Ultra Wideband technology in warehouse
Autorzy:: Rykała, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/1383483.pdf
Data publikacji:: 2018
Wydawca:: Polskie Wydawnictwo Ekonomiczne
Tematy:: UWB
RTLS
optymalizacja
magazyn
optimization
warehouse
Opis:: Przedsiębiorstwa stale dążą do maksymalizacji swoich zysków poszukując rozwiązań optymalizujących procesy logistyczne. Rosnąca konkurencja na rynku wymusza korzystanie z coraz to nowych rozwiązań technologicznych, które pozwalają nie tylko na śledzenie procesów w czasie rzeczywistym, ale również na zwiększenie ich produktywności. Zaletami zastosowania takich systemów są niewątpliwie: możliwość śledzenia ruchu pracowników czy towarów w czasie rzeczywistym oraz ich identyfikacja. W artykule opisano technologię Ultra Wideband, przedstawiono sposób wyznaczania pozycji w tym systemie oraz wskazano możliwość zastosowania omawianej technologii w magazynie.
Enterprises are constantly pursuing to maximize their profits by looking for solutions that optimize logistics processes. Increasing competition on the market enforces the use of new technological solutions that allow not only to track processes in real time, but also to increase their productivity. The advantages of using such systems are undoubtedly: the ability to track the movement of employees or goods in real time and their identification. The article describes the Ultra Wideband technology, presents the method of determining the position in this system and indicates the possibility of applying the discussed technology in the warehouse.
Źródło:: Gospodarka Materiałowa i Logistyka; 2018, 10; 29-37
1231-2037
Pojawia się w:: Gospodarka Materiałowa i Logistyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Miniaturized Spectacles Shaped Tapered Slotted Patch Antenna for UWB Applications
Autorzy:: Islam, M. T.
Samsuzzaman, M.
Mahmud, M. Z.
Powiązania:: https://bibliotekanauki.pl/articles/307753.pdf
Data publikacji:: 2018
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: patch antenna
tapered ground
UWB
wireless communication
Opis:: A compact planner patch ultra-wideband (UWB) antenna is presented in this paper. The antenna configuration consists of a spectacles-shaped patch and a slotted ground plane. Different parameters are investigated for improving the antenna’s properties and for achieving the preferred UWB band (3.1–10.6 GHz). The experimental and simulated results demonstrate that the proposed antenna acquires an operating bandwidth of 117% (3–11.5 GHz) with a stable omnidirectional radiation pattern, about 89% of average radiation efficiency and 4.2 dBi of average gain with the maximum of 5.7 dBi at 10.2 GHz.
Źródło:: Journal of Telecommunications and Information Technology; 2018, 1; 70-76
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Improving the GPR Detectability Using a Novel Loop Bowtie Antenna
Autorzy:: Ajith, K. K.
Bhattacharya, A.
Powiązania:: https://bibliotekanauki.pl/articles/308503.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: antenna
Ground Penetrating Radar
imaging
UHF
UWB
Opis:: The Ground Penetrating Radar (GPR) technique finds immense applications in civil engineering today, as the most suitable approach for non-destructive testing of pavements, highways, concrete structures, and more. The major challenge in carrying out a GPR evaluation is that the properties of the probed medium are usually unknown. The permittivity and conductivity of the medium may vary from those of air to water. The electromagnetic waves also have a frequency dependent attenuation. The ability of GPR to detect signals reflected and scattered by the targets largely depends upon the antenna performance. This paper studies a novel 11:1 wideband loop bowtie antenna with very good radiation properties in the entire operating bandwidth. Synthetic and experimental results are presented for the return loss and gain of the antenna. Furthermore, experimental results are presented for the radiation patterns in the E- and H-plane. We also used the antenna to measure B-scans over two different pipes, a bamboo, and a reinforced concrete structure. All results obtained with the proposed antenna have been compared with results obtained by using a RC loaded antenna. It has been found that the loop bowtie antenna has excellent detection capability and produces less clutter. The loop loading technique can be applied to existing antennas for improved GPR imaging. This will improve the detectability of GPR by improving the target return signal.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 3; 9-16
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Energy Consumption Models For MISO-UWB and TR-MISO-UWB Systems
Autorzy:: El Abboubi, A.
Elbahhar, F.
Heddebaut, M.
Elhillali, Y.
Powiązania:: https://bibliotekanauki.pl/articles/226206.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: energy efficiency
time reversal
MISO systems
UWB
Opis:: This paper, an energy consumption model is developed and exploited to evaluate the electrical energy consumption of ultra-wideband impulse radio (UWB-IR) systems. We develop the energy consumption models and our comparative study, on the one hand, for a system based single-input singleoutput (SISO) configuration and a multiple-input single-output (MISO) and, on the other hand, for a time reversal TR-MISO configuration and for MISO alone configuration. We consider an indoor propagation environment based on the 802.15.4a channel model. The results show very different behaviors depending on the propagation conditions, the number of antennas used, or on the number of transmitted symbols. Using such a model, a radiofrequency designer can obtain significant inputs to optimally select an adequate configuration to design an adaptive energyaware UWB-IR system.
Źródło:: International Journal of Electronics and Telecommunications; 2017, 63, 3; 285-291
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The influence of the data packet size on positioning parameters of UWB system for the purpose of tagging smart city infrastructure
Autorzy:: Hanzel, K.
Paszek, K.
Grzechca, D.
Powiązania:: https://bibliotekanauki.pl/articles/200391.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: UWB
positioning
V2I
smart city
infrastructure
Opis:: The paper presents a concept of the vehicle/road infrastructure in vehicle-to-infrastructure (V2I) communication for tagging and informing vehicles about the surrounded environment. A frame analysis and the influence of the data packet size on Ultra-wideband (UWB) were investigated. The authors have determined the distance that could be traveled by a vehicle at the given speed in relation to the amount of data that has to be transmitted during the ranging procedure. The authors propose a data frame format (using the IEEE 802.15.4a protocol) for coding/encoding the information about the road infrastructure efficiently during the positioning procedure. It affects to minimum the time that is required to exchange messages during the ranging and communication process. The whole system is an efficient and reliable element that enhances/extends the existing components of advanced driver-assistance systems (ADAS), which will facilitate validation of the information obtained from devices such as lidar, radar or video. The impact of the transmitted payload to the distance traveled by car opens the door to future research on the possibility of implementing efficient vehicle-to-vehicle (V2V) communication for autonomous driving or and other smart city solutions.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 4; 857-868
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Design of an Ultrawideband CPW-Fed Monopole Antenna with a Band-Notch Function
Autorzy:: Hosseini-Varkiani, M.
Hojat-Kashani, F.
Kamyab Hesari, M.
Powiązania:: https://bibliotekanauki.pl/articles/226522.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: monopole antenna
notch-band
coplanar waveguid
(CPW)
UWB
Opis:: In this paper, a CPW-fed monopole antenna for ultra wideband (UWB) applications using band-notch characteristics with size of (24×24×1.6 mm³ ) is presented. The antenna is designed for operation across the entire UWB from 3.1 to 10.6 GHz with band-notch in 5-6 GHz, by inserting an H-shaped slot on the CPW staircase feed line. The proposed antenna has a reflection coefficient below -10 dB through the frequency band. Also, reasonable gain values and good radiation pattern over the same frequency band have been observed. Details of the proposed antenna and experimental results are discussed and parametric study is presented.
Źródło:: International Journal of Electronics and Telecommunications; 2011, 57, 1; 109-113
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Characterization of an aperture-stacked patch antenna for ultra-wideband wearable radio systems
Autorzy:: Klemm, M.
Troester, G.
Powiązania:: https://bibliotekanauki.pl/articles/307769.pdf
Data publikacji:: 2005
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: ultra-wideband
UWB
ultra-wideband antennas
ultra-wideband communication
Opis:: This paper presents, for the first time, the time-domain characteristics of an aperture-stacked patch antenna (ASPA) for ultra-wideband (UWB) wearable devices. The methodology of antennas characterization for UWB radio systems is also outlined. The antenna operates within the 3-6 GHz frequency band. Time- and frequency-domain characteristics of this antenna are presented in transmission mode (Tx), receiving mode (Rx) and for 2-antenna (Tx-Rx) system. The pulse driving the antenna has duration of 0.65 ns. In the Tx mode, pulses radiated in different directions of the H-plane have very similar shapes. Fidelity factors are as high as 91.6-99.9%. For 2-antenna system, pulses received in normal and end-fire-like directions have the fidelity of 69.5%. As it was found, antenna does not behave "reciprocal" comparing Tx and Rx modes. For normal propagation direction, radiated pulse is the 2nd derivative of the input waveform, but in the Rx mode, received pulse is the 1st derivative of the incident plane wave. This antenna can be used for transmission of short-pulses, even 0.65-1 ns in duration. It is also small (patch planar dimensions 32/19 mm) and compact. Microstrip configuration allows further integration of active devices on the same board. Taking into account above results we can say that ASPA is a good candidate for UWB non-invasive wireless body area network (WBAN) applications.
Źródło:: Journal of Telecommunications and Information Technology; 2005, 2; 39-44
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The Positioning Accuracy Based on the UWB Technology for an Object on Circular Trajectory
Autorzy:: Grzechca, D.
Hanzel, K.
Powiązania:: https://bibliotekanauki.pl/articles/227286.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Ultra-Wideband
UWB
localization
propellers positioning
trilateration
location filtration
Opis:: This paper presents the comparison of filtering methods – median filtration, moving average Kalman filtration and filtration based on a distance difference to determine the most accurate arm length for circular motion, as a model of wind turbine propellers movement. The experiments have been performed with the UWB technology system containing four anchors and a tag attached to 90 cm arm that was rotated with speed up to 15.5 rad/s (as a linear speed of 50 km/h). The trilateration concept based on the signal latency has been described in order to determinate the position of an object on circular trajectory. The main objective is the circle plane rotation (parallel and perpendicular) with respect to the anchors plane reference system. All research tasks have been performed for various cases of motion schemes in order to get the filtration method for object in motion under best accuracy goal. Filtration methods have been applied on one of two stages of the positioning algorithm: (1) on raw data got from the single anchor-tag (before trilateration); (2) on the position obtained from four anchors and tag (after trilateration). It has been proven that the appropriate filtering allows for higher location accuracy. Moreover, location capabilities with the use of UWB technology – shows prospective use of positioning of objects without access to other positioning forms (ex. GPS) in many aspects of life such as currently developing renewable, green energy sources like wind turbines where the circular motion plays an important role, and precise positioning of propellers is a key element in monitoring the work of the whole wind turbine.
Źródło:: International Journal of Electronics and Telecommunications; 2018, 64, 4; 487-494
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Band Notch Characteristics Reconfigurable UWB Leaf Shape Monopole Antenna
Autorzy:: Muthusamy, Pachiyaannan
Nallapaneni, Srikanta
Perumalla, Krishna Chaitanya
Punna, Bharghava
Powiązania:: https://bibliotekanauki.pl/articles/2055232.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: band notch
PIN diode
leaf shape monopole antenna
reconfigurable
UWB
Opis:: In this paper a band notch characteristics reconfigurable UWB leaf shape monopole antenna is reported. The proposed antenna size is 42×32×1.6 mm³ and simulated S11-10dB impedance bandwidth is from 2.1 to 13.0 GHz. The notch bands are embodied into the designed antenna to suppress Bluetooth and WiFi bands from 2.3-2.7 GHz and 4.6-5.3 GHz. The PIN Diode is loaded to slot on the DGS to achieve notch bands. It has 4.48dB and 1.7dB gain achieved when diode ON and OFF condition. Further, it encompasses a bio-inspired leaf shape patch having high feasibility for deployment in secret and military purposes.
Źródło:: International Journal of Electronics and Telecommunications; 2022, 68, 2; 223--228
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Research on a scheme of generating ultra-wideband doublet signal based on the cross-gain modulation in a semiconductor optical amplifier
Autorzy:: Zhang, K.
Shao, J.
Powiązania:: https://bibliotekanauki.pl/articles/173646.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: ultra-wideband
UWB
semiconductor optical amplifier
SOA
cross-gain modulation
XGM
Opis:: We propose a novel scheme for generating ultra-wideband doublet signal based on the cross-gain modulation effect in a semiconductor optical amplifier. This scheme requires only a semiconductor optical amplifier and an optical source. By using OptiSystem software, we simulate and analyze the effect of the input signal light power and wavelength, the pulse width and injection current on the generated doublet pulse. In addition, the optimal range of parameters are also given in the simulation process.
Źródło:: Optica Applicata; 2018, 48, 1; 127-135
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: DS-UWB and TH-UWB Energy Consumption Comparison
Autorzy:: Elabboubi, A.
Elbahhar, F.
Heddebaut, M.
Elhillali, Y.
Powiązania:: https://bibliotekanauki.pl/articles/958085.pdf
Data publikacji:: 2016
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: energy consumption
multi-user techniques
Nakagami fading channel
TH time hopping
UWB
Opis:: The energy consumption of the wireless communication systems is starting to be unaffordable. One way to improve the power consumption is the optimization of the communication techniques used by the communication networks and devices. In order to develop an energy efficient UWB multi-user communication system, the choice of modulation and multi access technique is important. This paper compares two Ultra-wideband multi-user techniques, i.e. the DS-UWB and the TH-UWB in the case of the Nakagami-m fading channel. For the DS-UWB technique, the orthogonal (T-OVSF, ZCD) and non-orthogonal (Kasami) codes are used. For TH-UWB, authors consider different modulations (PPM, PSM, PAM). This comparison allows choosing the best solution in terms of energy consumption, data rate and communication range. Two different studies are realized to find the most efficient technique to use. In the first study, the same number of users for the different type of codes (data rate values) is chosen and the total energy consumption for several distances and path-loss coefficient is computed. In the second one, the multiusers effects (same data rate) for various values of distances and path-loss are evaluated.
Źródło:: Journal of Telecommunications and Information Technology; 2016, 1; 101-109
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Dual Port Antenna Combining Sensing and Communication Tasks for Cognitive Radio
Autorzy:: Nachouane, H.
Najid, A.
Tribak, A.
Riouch, F.
Powiązania:: https://bibliotekanauki.pl/articles/226370.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: cognitive radio
microstrip antenna
UWB
coplanar waveguide
sensing and communication tasks
sensing antenna
Opis:: Dynamic spectrum access has been proposed as the effective solution to overcome the spectrum scarcity issue, supported by cognitive radio technology. Sensing and communication functions are both the most important tasks in cognitive radio systems. In this paper, an antenna system combining sensing and communication tasks is proposed to be integrated into cognitive radio front-ends. The sensing task is performed by means of an ultra-wideband quasi-omnidirectional antenna. Whilst the communication task is ensured by using a narrowband antenna. Both antennas have been designed on the same layer of an FR4 substrate, for manufacturing cost constraint. Therefore, the isolation between them must take into consideration. The measured mutual coupling of less than -18 dB is achieved over the whole impedance bandwidth. The proposed sensing antenna covers a wide range frequency bands ranging from 2 to 5.5 GHz. While the communication antenna operates at 2.8 GHz, and by adding inductors to the antenna, the resonant frequency can be tuned from 2.6 to 2.7 GHz. The whole antenna system was designed, fabricated, and tested. Measurement and simulation results prove the feasibility of the proposed structure for cognitive radio applications.
Źródło:: International Journal of Electronics and Telecommunications; 2016, 62, 2; 121-127
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Localization System Supporting People with Cognitive Impairment and Their Caregivers
Autorzy:: Kolakowski, Jerzy
Djaja-Josko, Vitomir
Kolakowski, Marcin
Cichocki, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/225971.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: active and assisted living (AAL)
Bluetooth Low Energy
dementia
internet of things
localization
UWB
Opis:: Localization systems are an important component of Active and Assisted Living (AAL) platforms supporting persons with cognitive impairments. The paper presents a positioning system being a part of the platform developed within the IONIS European project. The system’s main function is providing the platform with data on user mobility and localization, which would be used to analyze his/her behavior and detect dementia wandering symptoms. An additional function of the system is localization of items, which are frequently misplaced by dementia sufferers. The paper includes a brief description of system’sarchitecture, design of anchor nodes and tags and exchange of data between devices.both localization algorithms for user and item positioning are also presented. Exemplary results illustrating the system’s capabilities are also included.
Źródło:: International Journal of Electronics and Telecommunications; 2020, 66, 1; 125-131
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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