Results 51 to 60 of about 881,066 (380)

3D Printed Hemispherically Radiating Antenna for Broadband Millimeter Wave Applications

open access: yesIEEE 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
doaj   +1 more source

Relationship of type III radio bursts with quasi-periodic pulsations in a solar flare [PDF]

open access: yes, 2016
We studied a solar flare with pronounced quasi-periodic pulsations detected in the microwave, X-ray, and radio bands. We used correlation, Fourier, and wavelet analyses methods to examine the temporal fine structures and relationships between the time ...
Kashapova, L.K.   +3 more
core   +2 more sources

Geometric Accuracy of Sentinel-1A and 1B Derived from SAR Raw Data with GPS Surveyed Corner Reflector Positions

open access: yesRemote Sensing, 2018
The geometric accuracy of synthetic aperture radar (SAR) data is usually derived from level-1 products using accurately surveyed corner reflector positions.
Kersten Schmidt   +3 more
doaj   +1 more source

Approaches for Road Surface Roughness Estimation Using Airborne Polarimetric SAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The road surface roughness is an important parameter that determines the quality of a road network. It has a direct influence on the grip and skid resistance of the vehicles.
Arun Babu   +2 more
doaj   +1 more source

Resonance-like Goss-Haenchen Shift induced by nano-metal films

open access: yes, 2008
The influence of nano-metal films on the Goos-Haenchen shift (GHS) is investigated. The films deposited at the total reflecting surface of a perspex prism/air have a sheet resistance varying between Z = 25 and 3 000 Ohm.
Agudin   +10 more
core   +1 more source

The Interaction of Microwaves with Materials of Different Properties

open access: yesElectromagnetic 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

Characterization of the Amazon Rainforest Backscatter at X-Band Using TanDEM-X Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The 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

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

TE Wave Measurement and Modeling

open access: yes, 2013
In the TE wave method, microwaves are coupled into the beam-pipe and the effect of the electron cloud on these microwaves is measured. An electron cloud (EC) density can then be calculated from this measurement.
Alesini, David   +4 more
core   +1 more source

Universal holonomic quantum gates over geometric spin qubits with polarised microwaves

open access: yesNature 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

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