Results 11 to 20 of about 378,510 (233)

Exchanging Bandwidth With Aperture Size in Wireless Indoor Localization - Or Why 5G/6G Systems With Antenna Arrays Can Outperform UWB Solutions

open access: yesIEEE Open Journal of Vehicular Technology, 2021
The localization of wireless devices in indoor scenarios presents a major challenge because of multipath propagation. Hence, the majority of the research community has focused on increasing the available bandwidth of localization systems, leading to the ...
Erik Sippel   +5 more
doaj   +1 more source

Electromagnetically induced transparency on a single artificial atom [PDF]

open access: yes, 2010
We present experimental observation of electromagnetically induced transparency (EIT) on a single macroscopic artificial "atom" (superconducting quantum system) coupled to open 1D space of a transmission line.
A. A. Abdumalikov   +6 more
core   +2 more sources

A Fully Automatic Algorithm for Editing the TanDEM-X Global DEM

open access: yesRemote Sensing, 2020
The spaceborne mission TanDEM-X successfully acquired and processed a global Digital Elevation Model (DEM) from interferometric bistatic SAR data at X band. The product has been delivered in 2016 and is characterized by an unprecedented vertical accuracy.
Carolina González   +4 more
doaj   +1 more source

The High-Resolution Digital-Beamforming Airborne SAR System DBFSAR

open access: yesRemote Sensing, 2020
Synthetic Aperture Radar (SAR) is an established remote sensing technique that can robustly provide high-resolution imagery of the Earth’s surface. However, current space-borne SAR systems are limited, as a matter of principle, in achieving high azimuth ...
Andreas Reigber   +18 more
doaj   +1 more source

Machine Learning Approaches for Road Condition Monitoring Using Synthetic Aperture Radar

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Airborne synthetic aperture radar (SAR) has the potential to monitor remotely the road traffic infrastructure on a large scale. Of particular interest is the road surface roughness, which is an important road safety parameter.
Lucas Germano Rischioni   +3 more
doaj   +1 more source

On the effect of superfluid flows on the interaction of microwaves with He II [PDF]

open access: yes, 2012
The paper proposes a possible mechanism of interaction of microwaves with superfluid helium that results in an experimentally observed narrow peak of microwave absorption on the frequencies by the order of the roton frequency.
Khodusov, V. D., Naumovets, A. S.
core   +2 more sources

Antenna Array Calibration Using a Sparse Scene

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
In radar systems, antenna arrays acquire direction-dependent information to localize targets or create images of the environment. However, because of unknown complex amplitudes per channel and mutual coupling, a calibration is necessary for good ...
Johanna Geiss   +3 more
doaj   +1 more source

Modeling and Compensation of the Penetration Bias in InSAR DEMs of Ice Sheets at Different Frequencies

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Interferometric synthetic aperture radar (InSAR) is able to provide important information for the characterization of the surface topography of glaciers and ice sheets.
Georg Fischer   +2 more
doaj   +1 more source

Model-Based Interpretation of PolSAR Data for the Characterization of Glacier Zones in Greenland

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Different approaches have been proposed in recent years to map glacier zones using Synthetic Aperture Radar (SAR). Most of them rely on empirical or statistical approaches for the interpretation of backscatter intensity measurements and their seasonal ...
Giuseppe Parrella   +2 more
doaj   +1 more source

Statistical Regularization for Enhanced TomoSAR Imaging

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
One of the main topics in synthetic aperture radar (SAR) tomography (TomoSAR) is the estimation of the vertical structures' location, which scatter the field back toward the sensor, constrained to a reduced number of passes. Moreover, the introduction of
Gustavo Martin del Campo   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy