Results 21 to 30 of about 3,021 (195)

Circular SAR Optimization Imaging Method of Buildings

open access: yesLeida xuebao, 2015
The Circular Synthetic Aperture Radar (CSAR) can obtain the entire scattering properties of targets because of its great ability of 360° observation. In this study, an optimal orientation of the CSAR imaging algorithm of buildings is proposed by applying
Wang Jian-feng   +4 more
doaj   +1 more source

Innovative Educational Technology for the Use of Modern CAD Systems for the Formation of Professional Competences of Students of Radio Engineering Specialties [PDF]

open access: yesITM Web of Conferences, 2020
The basic principles of application of innovative educational technology on the basis of modern systems of automated design for higher educational institutions for students of radio engineering specialties are considered.
Suchkov Victor B.   +3 more
doaj   +1 more source

Modelling of two-dimensional scattering centre of wind turbine based on Feko

open access: yesThe Journal of Engineering, 2019
The wind farm and high-frequency radar station inevitably produce more and more prominent electromagnetic interference problem. The key to solve the interference problem is to study the electromagnetic scattering characteristics of wind turbines in high ...
Bo Tang, Hao Chen, Li Huang, Haobang Liu
doaj   +1 more source

Gain improvement of the Yagi-Uda Antenna Using Genetic Algorithm for Application in DVB-T2 Television Signal Reception in Tanzania [PDF]

open access: yesJournal of Interdisciplinary Sciences, 2017
Region 2 UHF Frequency band is the frequency range which is used for transmitting Television signals in East Africa. Yagi-uda antenna is an array Antenna designed for various applications, in this paper a 5-element yagi-uda antenna is designed and ...
Twahir Kazema, Kisangiri Michael
doaj  

Evaluation of electric and magnetic fields distribution and SAR induced in 3D models of water containers by radiofrequency radiation using FDTD and FEM simulation techniques

open access: yes, 2014
In this study, two software packages using different numerical techniques FEKO 6.3 with Finite-Element Method (FEM) and XFDTD 7 with Finite Difference Time Domain Method (FDTD) were used to assess exposure of 3D models of square, rectangular, and ...
Abdelsamie, Maher A. A.   +3 more
core   +1 more source

Analysis of Eddy currents induced by transverse and longitudinal gradient coils in different tungsten collimators geometries for SPECT/MRI integration [PDF]

open access: yes, 2015
A
Joseph, Wout   +7 more
core   +3 more sources

Multi-radar fusion technique for high-resolution ISAR imaging in sea-cluttered environment

open access: yesThe Journal of Engineering, 2019
Radar imaging of the ship is one of the important means for surveillance and reconnaissance of targets. Here, the K-distribution is used for the statistical characterisation of echo model in sea-clutter environment.
Liu Yi   +3 more
doaj   +1 more source

Estimating Soil Electrical Parameters in the Canadian High Arctic From Impedance Measurements of the MIST Antenna Above the Surface

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The MIST experiment aims to detect the cosmological 21‐cm signal through sky observations at 25–125 MHz using a wide‐beam antenna. The antenna is mounted above the soil and the beam characteristics are highly dependent on the soil's electrical properties.
I. Hendricksen   +15 more
wiley   +1 more source

Characteristics of HEMP Radiation Field on Typical Transport Aircraft with Frequency Sweep Method

open access: yesApplied Sciences, 2021
This paper presents characteristics of the HEMP radiation field on a typical transport aircraft using the frequency sweep method. Firstly, the characteristics of the HEMP field are analyzed.
Guang Hu, Qianfeng Liu
doaj   +1 more source

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