Detection of Low RCS Unmanned Air Systems Using K-Band Continuous Wave Doppler Radar
Journal 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
3D Printed Hemispherically Radiating Antenna for Broadband Millimeter Wave Applications
IEEE Open Journal of Antennas and Propagation, 2023 Nowadays, additive manufacturing provides far-reaching possibilities for use in radio frequency components. In addition to almost unlimited freedom of design as compared to conventional manufacturing, the absence of further assembly steps is a key aspect
Lukas Engel +7 more
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The Interaction of Microwaves with Materials of Different Properties
Electromagnetic Fields and Waves, 2019 Electromagnetic radiation, such as microwaves, are all the time reflected, transmitted, and/or absorbed by any kind of matter, glasses, conductors, water, ferrites, and so forth. Magnetic materials absorb greatly microwaves.
R. Ulloa +2 more
semanticscholar +1 more source
Dual-Frequency Airborne SAR for Large Scale Mapping of Tidal Flats
Remote 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
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Magnetization switching by microwaves initially rotating in opposite direction to precession [PDF]
Applied Physics Express 8, 123002 (2015), 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. In this letter however, we show that microwaves initially rotating opposite to the magnetization precession destabilize the magnetization ...
arxiv +1 more source
Universal holonomic quantum gates over geometric spin qubits with polarised microwaves
Nature Communications, 2018 A microwave shares a nonintuitive phase called the geometric phase with an interacting electron spin after an elastic scattering. The geometric phase, generally discarded as a global phase, allows universal holonomic gating of an ideal logical qubit ...
Kodai Nagata +3 more
semanticscholar +1 more source
Coherent frequency up-conversion of microwaves to the optical telecommunications band in an Er:YSO crystal [PDF]
, 2015 The ability to convert quantum states from microwave photons to optical photons is important for hybrid system approaches to quantum information processing.
X. Fernandez-Gonzalvo +4 more
semanticscholar +1 more source
Characterization of the Amazon Rainforest Backscatter at X-Band Using TanDEM-X Data
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThe radiometric calibration of spaceborne SAR products plays a key role for ensuring a good performance of the whole end-to-end system and requires a precise knowledge of both the radar system and the illuminated target on ground.
Luca Dell'Amore +4 more
doaj +1 more source
Large-baseline InSAR for precise topographic mapping: a framework for TanDEM-X large-baseline data [PDF]
Advances in Radio Science, 2017 The global Digital Elevation Model (DEM) resulting from the TanDEM-X mission provides information about the world topography with outstanding precision.
M. Pinheiro, A. Reigber, A. Moreira
doaj +1 more source
A Tutorial on the Sequential Sampling Impulse Radar Concept and Selected Applications
IEEE Journal of Microwaves, 2023 The sequential sampling impulse radar is a radar concept that has been known for a very long time. Ultrawideband (UWB) radar systems have been realized based on this concept long before the popular phrases UWB and UWB radar were created.
Martin Vossiek +5 more
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