Results 31 to 40 of about 3,423,847 (360)
, 2018 Stealth technology combines numerous means and techniques to be ‘invisible’ for opponents in a battle field. Since metals are the key construction materials of military vehicles, weapon and equipment, they can be targeted and detected by RAdio Detection ...
A. Kolanowska +5 more
semanticscholar +1 more source
Photonic probing of radio waves for k-space tomography.
Optics Express, 2017 We harness coherent optical processing to simultaneously sense the angle of arrival and the frequency of radio waves. Signals captured by a distributed antenna array are up-converted to optical domain using electro-optic modulators coupled to individual ...
J. Murakowski +4 more
semanticscholar +1 more source
Illuminating gravitational waves: A concordant picture of photons from a neutron star merger [PDF]
Science, 2017 GROWTH observations of GW170817 The gravitational wave event GW170817 was caused by the merger of two neutron stars (see the Introduction by Smith). In three papers, teams associated with the GROWTH (Global Relay of Observatories Watching Transients ...
M. Kasliwal +80 more
semanticscholar +1 more source
A tunable metamaterial absorber using varactor diodes
New Journal of Physics, 2013 We present the design, analysis and measurements of a polarization-insensitive tunable metamaterial absorber with varactor diodes embedded between metamaterial units.
Jie Zhao +5 more
doaj +1 more source
Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell
International Journal of Antennas and Propagation, 2020 The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of
Vinci de Dieu Bokoyo Barandja +5 more
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Excitation of plasma waves by unstable photoelectron and thermal electron populations on closed magnetic field lines in the Martian ionosphere [PDF]
Annales Geophysicae, 2005 It is argued that anisotropic electron pitch angle distributions in the closed magnetic field regions of the Martian ionosphere gives rise to excitation of plasma instabilities.
N. Borisov, N. Borisov, E. Nielsen
doaj +1 more source
Optical detection of radio waves through a nanomechanical transducer [PDF]
Nature, 2013 Low-loss transmission and sensitive recovery of weak radio-frequency and microwave signals is a ubiquitous challenge, crucial in radio astronomy, medical imaging, navigation, and classical and quantum communication.
T. Bagci +10 more
semanticscholar +1 more source
Electromagnetic manifestation of the lithosphere in the ULF-VLF range
Геофизический журнал, 2012 Brief analysis of the current state of research in natural electromagnetic field at the Earth’s surface in the SLF-VLF range has been conducted. A set of estimations of field levels ratios of lithospheric and storm origin has been made. It has been shown
V. N. Uvarov
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Вестник урологии, 2023 Introduction. Premature ejaculation (PE) is the second most common male sexual dysfunction with a significant negative impact on quality of life. A significant number of conservative and surgical methods for the treatment of PE are proposed, but their ...
Ya. B. Mirkin +3 more
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Scattering Characteristics of Targets above a Rough Surface in SAR Images
International Journal of Antennas and Propagation, 2013 The modeling, simulation, and analysis of target characteristics are essential to a synthetic aperture radar (SAR) image-based autotarget recognition (ATR) system.
Bo Zhao, Tie Jun Cui
doaj +1 more source