Results 41 to 50 of about 870,217 (377)

Performance Comparison of Reflector- and Planar-Antenna Based Digital Beam-Forming SAR

open access: yesInternational Journal of Antennas and Propagation, 2009
The trend in the conception of future spaceborne radar remote sensing is clearly toward the use of digital beamforming techniques. These systems will comprise multiple digital channels, where the analog-to-digital converter is moved closer to the antenna.
Marwan Younis   +4 more
doaj   +1 more source

Mitigation of Mutual Antenna Coupling Effects for Active Radar Targets in L-Band

open access: yesRemote Sensing, 2021
In order to realize a compact L-band transponder design for the calibration of spaceborne synthetic aperture radar (SAR) systems, a novel antenna was developed by DLR.
Anna Maria Büchner   +4 more
doaj   +1 more source

Magnetization switching by microwaves initially rotating in opposite direction to precession

open access: yes, 2015
A common understanding of magnetization switching in microwave-assisted magnetization reversal is that the rotation direction of the microwaves should be the same with the precession direction of the magnetization.
Taniguchi, Tomohiro
core   +1 more source

Microwaves Are Everywhere: “SMM: Nano-Microwaves” [PDF]

open access: yesIEEE Journal of Microwaves, 2021
If the Twentieth Century boasted of the Space Age and the Computer Age, the Twenty-First Century is certainly starting off with the Age of Biology, or at least Biochemistry. The enormous impact of CRISPR (clustered regularly interspaced short palindromic repeats), LAMP (loop-mediated isothermal amplification), cryo-EM (electron microscopy), and many ...
openaire   +2 more sources

Dual-Frequency Airborne SAR for Large Scale Mapping of Tidal Flats

open access: yesRemote Sensing, 2020
Digital elevation models of tidal flats are a most valuable data source for the water management of coastal areas and need frequent updates to account for changes in sedimentation, erosion and identification of damages in building infrastructure.
Muriel Pinheiro   +7 more
doaj   +1 more source

Integrated microwave photonics [PDF]

open access: yesLaser & Photonics Reviews, 2013
30 pages, 23 figures, to appear in Laser & Photonics ...
David Marpaung   +6 more
openaire   +5 more sources

Range-Doppler Based CFAR Ship Detection with Automatic Training Data Selection

open access: yesRemote Sensing, 2019
Ship detection is an essential maritime security requirement. Current state-of-the-art synthetic aperture radar (SAR) based ship detection methods employ fully focused images.
Sushil Kumar Joshi   +3 more
doaj   +1 more source

Detection of Low RCS Unmanned Air Systems Using K-Band Continuous Wave Doppler Radar

open access: yesJournal of Electrical and Computer Engineering, 2023
UASs (Unmanned Air Systems) are universally used in many activities, spanning from leisure-commercial to military applications. Accordingly, as the number of UASs operating in the sky increases, so does the need to detect and identify them, in order to ...
Alexandros Kyritsis   +2 more
doaj   +1 more source

Single Cooper pair tunneling induced by non-classical microwaves

open access: yes, 1996
A mesoscopic Josephson junction interacting with a mode of non-classical microwaves with frequency $\omega$ is considered. Squeezing of the electromagnetic field drastically affects the dynamics of Cooper tunneling.
A Vourdas   +9 more
core   +1 more source

Magnetization dynamics in the single-molecule magnet Fe8 under pulsed microwave irradiation [PDF]

open access: yes, 2007
We present measurements on the single molecule magnet Fe8 in the presence of pulsed microwave radiation at 118 GHz. The spin dynamics is studied via time resolved magnetization experiments using a Hall probe magnetometer.
A. Abragam   +7 more
core   +1 more source

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