Results 51 to 60 of about 6,696,337 (373)

Atomic resolution imaging at 2.5 GHz using near-field microwave microscopy

open access: yes, 2010
Atomic resolution imaging is demonstrated using a hybrid scanning tunneling/near-field microwave microscope (microwave-STM). The microwave channels of the microscope correspond to the resonant frequency and quality factor of a coaxial microwave resonator,
Lee, Jonghee   +4 more
core   +1 more source

Microwave Vision Three-dimensional SAR Experimental System and Full-polarimetric Data Processing Method

open access: yesLeida xuebao
Three-Dimensional (3D) Synthetic Aperture Radar (SAR) holds great potential for applications in fields such as mapping and disaster management, making it an important research focus in SAR technology. To advance the application and development of 3D SAR,
Xiaolan QIU   +9 more
doaj   +1 more source

Solar Radio Bursts with Spectral Fine Structures in Preflares [PDF]

open access: yes, 2014
A good observation of preflare activities is important for us to understand the origin and triggering mechanism of solar flares, and to predict the occurrence of solar flares.
Huang, Jing   +6 more
core   +2 more sources

Simulation and Analysis of SAR Images of Oceanic Shear-Wave-Generated Eddies

open access: yesSensors, 2019
Synthetic Aperture Radar (SAR) is widely used in oceanic eddies research. High-resolution SAR images should be useful in revealing eddy features and investigating the eddy imaging mechanism.
Yuhang Wang, Min Yang, Jinsong Chong
doaj   +1 more source

The Planck Low Frequency Instrument [PDF]

open access: yes, 1999
The Low Frequency Instrument (LFI) of the "Planck Surveyor" ESA mission will perform high-resolution imaging of the Cosmic Microwave Background anisotropies at four frequencies in the 30-100 GHz range.
A. Mennella   +8 more
core   +2 more sources

A Polarization-Power-Maximum-Based 3-D Imaging Method for Ku-Band UAV-Borne Fully Polarimetric Array InSAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Fully polarimetric array InSAR (Pol-array-InSAR) can obtain 3-D position information and the polarization scattering characteristics of targets. In this article, we propose a polarization analysis-based processing framework for the synthetic aperture ...
Shujie Song   +6 more
doaj   +1 more source

Sparse Bayesian Learning Based Three-Dimensional Imaging Algorithm for Off-Grid Air Targets in MIMO Radar Array

open access: yesRemote Sensing, 2018
In recent years, the development of compressed sensing (CS) and array signal processing provides us with a broader perspective of 3D imaging. The CS-based imaging algorithms have a better performance than traditional methods.
Zekun Jiao   +4 more
doaj   +1 more source

Near-Field Scanning Microwave Microscopy: Measuring Local Microwave Properties and Electric Field Distributions

open access: yes, 1998
We describe the near-field microwave microscopy of microwave devices on a length scale much smaller than the wavelength used for imaging. Our microscope can be operated in two possible configurations, allowing a quantitative study of either material ...
Anlage, Steven M.   +6 more
core   +2 more sources

Solar Activity Studies using Microwave Imaging Observations [PDF]

open access: yes, 2016
We report on the status of solar cycle 24 based on polar prominence eruptions (PEs) and microwave brightness enhancement (MBE) information obtained by the Nobeyama radioheliograph.
Gopalswamy, Nat
core   +3 more sources

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source

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