Results 51 to 60 of about 870,217 (377)

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

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

Microwave Heating of Water, Ice and Saline Solution: Molecular Dynamics Study

open access: yes, 2006
In order to study the heating process of water by the microwaves of 2.5-20GHz frequencies, we have performed molecular dynamics simulations by adopting a non-polarized water model that have fixed point charges on rigid-body molecules.
Havriliak S.   +4 more
core   +1 more source

Temporal and Spatial Analyses of Spectral Indices of Nonthermal Emissions Derived from Hard X-Rays and Microwaves [PDF]

open access: yes, 2012
We studied electron spectral indices of nonthermal emissions seen in hard X-rays (HXRs) and in microwaves. We analyzed 12 flares observed by the Hard X-ray Telescope aboard {\it Yohkoh}, Nobeyama Radio Polarimeters (NoRP), and the Nobeyama ...
Asai, Ayumi   +7 more
core   +2 more sources

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

High-Resolution Forest Mapping from TanDEM-X Interferometric Data Exploiting Nonlocal Filtering

open access: yesRemote Sensing, 2018
In this paper, we discuss the potential and limitations of high-resolution single-pass interferometric synthetic aperture radar (InSAR) data for forest mapping.
Michele Martone   +5 more
doaj   +1 more source

Large-baseline InSAR for precise topographic mapping: a framework for TanDEM-X large-baseline data [PDF]

open access: yesAdvances 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

open access: yesIEEE 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
doaj   +1 more source

Photodetection of propagating quantum microwaves in circuit QED [PDF]

open access: yes, 2009
We develop the theory of a metamaterial composed of an array of discrete quantum absorbers inside a one-dimensional waveguide that implements a high-efficiency microwave photon detector.
Bouchiat V   +11 more
core   +3 more sources

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