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Zlatko ?ivkovic,Antonio ?arolic
Pág. 125 - 132
The paper presents the method for measuring parameters (gain, antenna factor, impedance and radiation pattern) of small antennas in GTEM cell, which is a novel method and environment for antenna measurements. In order toinvestigate the suitability of GTE...
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Damir Senic,Dragan Poljak,Antonio ?arolic
Pág. 133 - 140
The radiation of RFID anti-theft gate system based on two parallel coaxial square loop antennas has been analyzed.The system was simulated in FEKO and near electric andmagnetic fields have been calculated. A physical model of thesystem was realized and n...
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Jason Gross, Yu Gu and Matthew Rhudy
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Jason Gross, Yu Gu and Matthew Rhudy
This article considers a novel approach to using global positioning system (GPS) signal strength readings and estimated velocity vector for estimating the attitude of a small fixed-wing unmanned aerial vehicle (UAV). This approach has the benefit being a...
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Sudantha Perera, Yan Zhang, Dusan Zrnic and Richard Doviak
Electromagnetic (EM) simulation of dual-polarized antennas is necessary for precise initial alignments, calibration and performance predictions of multi-function phased array radar systems. To achieve the required flexibility and scalability, a novel Fin...
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Sudantha Perera, Yan Zhang, Dusan Zrnic and Richard Doviak
Electromagnetic (EM) simulation of dual-polarized antennas is necessary for precise initial alignments, calibration and performance predictions of multi-function phased array radar systems. To achieve the required flexibility and scalability, a novel Fin...
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Stephan Haefner,Reiner Thomä
Pág. 27 - 34
Estimating the parameters of a geometric propagation model from MIMO channel sounding measurements will be considered, which requires the solution of an inverse problem. Thus, a model of the measured data is derived, which incorporates a model of the mea...
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Kyle Hoegh, Roger Roberts, Shongtao Dai and Eyoab Zegeye Teshale
Asphalt pavement compaction quality control and quality assurance (QC/QA) are traditionally based on destructive drilled cores and/or nuclear gauge results, which both are spot measurements representing significantly less than 1 percent of the in-service...
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Mousumi Ahmed and Kamesh Subbarao
This paper presents an estimation based backstepping like control law design for an Unmanned Aerial Vehicle (UAV) to track a moving target in 3-D space. A ground-based sensor or an onboard seeker antenna provides range, azimuth angle, and elevation angle...
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Antonio Angrisano, Giovanni Cappello, Salvatore Gaglione and Ciro Gioia
Velocity estimation has a key role in several applications; for instance, velocity estimation in navigation or in mobile mapping systems and GNSSs is currently a common way to achieve reliable and accurate velocity. Two approaches are mainly used to obta...
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Pramod Kumar Jangir, Kevin C. Ewans and Ian R. Young
Ocean wave design criteria are required for the design of offshore platforms and floating systems, which are derived using in situ measurements. However, there is uncertainty regarding the performance of the instruments used for the in situ measurements....
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Wladyslaw Koc, Cezary Specht, Jacek Szmaglinski and Piotr Chrostowski
At present, the problem of rail routes reconstruction in a global reference system is increasingly important. This issue is called Absolute Track Geometry, and its essence is the determination of the axis of railway tracks in the form of Cartesian coordi...
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Marek Ce?kovic, Martin Schrötter, Róbert Hunady, Pavol Kurdel and Natália Gecejová
A helicopter in flight can be considered an unstable dynamic system with many unwanted vibrations originating from multiple sources, such as the operation of the engines and individual components. These vibrations cause the degradation of the structural ...
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Antonios Constantinides, Haris Haralambous, Harris Papadopoulos and Michalis Makrominas
Interference from other users, due to the long-distance propagation of HF signals, causes spectral congestion, which is considered a primary detrimental effect on HF (3?30 MHz) communication systems. More than a year of HF electric field measurements fro...
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Jinjing Ren, Hezhihan Fan, Qi Tang, Zhongyuan Yu, Yang Xiao and Xiang Zhou
Enlarging or reducing the antenna beam width of antennas can improve the positioning capability of detection systems. A miniaturized and easily fabricated ultra-wideband (UWB) antenna system for long-distance electromagnetic detection is proposed in this...
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Ayan Barbora, Shailendra Rajput, Konstantin Komoshvili, Jacob Levitan, Asher Yahalom and Stella Liberman-Aronov
Non-ionizing millimeter-waves (MMW) interact with cells in a variety of ways. Here the inhibited cell division effect was investigated using 85?105 GHz MMW irradiation within the International Commission on Non-Ionizing Radiation Protection (ICNIRP) non-...
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Levon Grigoryan,Martin Aivazyan,Arshak Babayan
Pág. 1 - 8
The work is devoted to research in Mobile Station (MS) positioning techniques having opportunity and perspective of using in the next generation communication networks, particularly in cellular networks. Direction of Arrival (DOA) estimation is necessary...
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Na Kou, Long Li, Shuncheng Tian and Yuanchang Li
A metamaterial aperture antenna (MAA) that generates frequency-diverse radiation field patterns has been introduced in the context of microwave wave imaging to perform compressive image reconstruction. This paper presents a new metamateriapl aperture des...
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Soufian Lakrit,Hassan Ammor
Pág. 210 - 214
A new small circular patch antenna for ultra-wideband (UWB) applications is presented. By studying this structure, it is shown that the insertion of a slot with the desired length and width in the ground plane, can lead to a large bandwidth. Our antenna,...
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Anargyros T. Baklezos, Theodoros N. Kapetanakis, Ioannis O. Vardiambasis, Christos N. Capsalis and Christos D. Nikolopoulos
A key part of every space science mission, in the system-level approach, is the detailed study and modeling of the emissions from transmission lines. Harnesses usually emit electromagnetic fields due to the currents (of common and/or differential modes) ...
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