Results 81 to 90 of about 136,601 (340)

Technical approaches, chapter 3, part E [PDF]

open access: yes
Radar altimeters, scatterometers, and imaging radar are described in terms of their functions, future developments, constraints, and ...

core   +1 more source

Lanthanum‐Induced Gradient Fields in Asymmetric Heterointerface Catalysts for Enhanced Oxygen Electrocatalysis

open access: yesAdvanced Materials, EarlyView.
Uncontrolled atomic migration during the pyrolysis of metal‐N‐C catalysts often leads to disordered coordination environments, active site loss, and poor oxygen electrocatalytic activities. Herein, a La‐mediated atomic migration strategy enables the fabrication of a well‐defined asymmetric heterostructure (LaN/LaFe‐NC) featuring a built‐in electric ...
Yihan Zhang   +6 more
wiley   +1 more source

Gridless sparsity-based DOA estimation for sparse linear array

open access: yesThe Journal of Engineering, 2019
A novel two-stage gridless sparsity-based method for sparse linear array direction-of-arrival (DOA) estimation is presented. First, the covariance matrix gridless sparse representation method based on atomic norm minimisation is proposed for ...
Yu Zhang   +3 more
doaj   +1 more source

Quality Assessment of SAR-to-Optical Image Translation

open access: yesRemote Sensing, 2020
Synthetic aperture radar (SAR) images contain severe speckle noise and weak texture, which are unsuitable for visual interpretation. Many studies have been undertaken so far toward exploring the use of SAR-to-optical image translation to obtain near ...
Jiexin Zhang   +4 more
doaj   +1 more source

Spaceborne radar observations: A guide for Magellan radar-image analysis [PDF]

open access: yes
Geologic analyses of spaceborne radar images of Earth are reviewed and summarized with respect to detecting, mapping, and interpreting impact craters, volcanic landforms, eolian and subsurface features, and tectonic landforms.
Blom, R. G.   +8 more
core   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

open access: yes, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica   +4 more
core  

MoO2‐Mediated Ni─Fe Bond Contraction and Electronic Modulation in Ni3Fe Alloy for Efficient Water Electrolysis at High‐Current‐Densities

open access: yesAdvanced Materials, EarlyView.
MoO2 effectively modulates the electronic structure of Ni3Fe and optimizes the Ni─Fe bonding configuration, thereby enabling dual regulation of the Volmer‐Heyrovsky steps and the evolution pathways of reaction intermediates during the water electrolysis process, which collectively accelerates both the hydrogen evolution reaction and oxygen evolution ...
Liancen Li   +9 more
wiley   +1 more source

A Fast Approach to Texture-Less Object Detection Based on Orientation Compressing Map and Discriminative Regional Weight

open access: yesAlgorithms, 2018
This paper presents a fast algorithm for texture-less object recognition, which is designed to be robust to cluttered backgrounds and small transformations.
Hancheng Yu, Haibao Qin, Maoting Peng
doaj   +1 more source

Geological evaluation of radar imagery of the Spanish Peaks region, Colorado [PDF]

open access: yes
Radar imaging of Spanish Peaks, Colorado geological ...
Johnson, R. B.
core   +1 more source

Advanced Synthetic Aperture Radar Based on Digital Beamforming and Waveform Diversity [PDF]

open access: yes, 2008
This paper introduces innovative SAR system concepts for the acquisition of high resolution radar images with wide swath coverage from spaceborne platforms.
Gebert, Nicolas   +3 more
core   +1 more source

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