Results 31 to 40 of about 1,598,295 (269)

Implementation Method of Automotive Video SAR (ViSAR) Based on Sub-Aperture Spectrum Fusion

open access: yesRemote Sensing, 2023
The automotive synthetic aperture radar (SAR) can obtain two-dimensional (2-D) high-resolution images and has good robustness compared with the other sensors.
Ping Guo   +4 more
doaj   +1 more source

Staggered-SAR for High-Resolution Wide-Swath Imaging [PDF]

open access: yes, 2012
Synthetic aperture radar (SAR) is a remote sensing technique, capable of providing high resolution images independent of weather conditions and sunlight illumination.
Villano, Michelangelo   +5 more
core   +1 more source

Spaceborne Bi- and Multistatic SAR: Potential and Challenges [PDF]

open access: yes, 2006
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas that are mounted on separate platforms. Such a spatial separation has several operational advantages, which will increase the capability, reliability ...
Moreira, Alberto, Krieger, Gerhard
core   +1 more source

A SAR conjugate mirror [PDF]

open access: yes, 2006
A radar transponder was constructed, which modifies the received signal such that its complex conjugate is returned to the radar, qualities of the conjugate mirror used in optics and acoustics.
Hounam, David
core   +1 more source

Video SAR Enhanced Imaging Using a Self-Supervised Super-Resolution Reconstruction Network

open access: yesRemote Sensing
Video synthetic aperture radar (SAR) enables observation of moving targets by leveraging temporal information across successive frames. In particular, dynamic shadows in video SAR image sequences provide critical cues for detecting moving objects whose ...
Xuejun Huang   +4 more
doaj   +1 more source

Signal Processing for a Multiple-Input, Multiple-Output (MIMO) Video Synthetic Aperture Radar (SAR) with Beat Frequency Division Frequency-Modulated Continuous Wave (FMCW)

open access: yesRemote Sensing, 2017
In this paper, we present a novel signal processing method for video synthetic aperture radar (ViSAR) systems, which are suitable for operation in unmanned aerial vehicle (UAV) environments.
Seok Kim   +4 more
doaj   +1 more source

Focusing dynamic single‐channel synthetic aperture radar video with optical flow‐informed reconstruction

open access: yesElectronics Letters, 2022
The motion of targets is well known to result in their defocusing and displacement in SAR imagery, but detection of motion and re‐focusing of targets under generic conditions remains an ongoing interest.
F. M. Watson
doaj   +1 more source

Mechanisms of disease-modifying effect of saracatinib (AZD0530), a Src/Fyn tyrosine kinase inhibitor, in the rat kainate model of temporal lobe epilepsy

open access: yesNeurobiology of Disease, 2021
We have recently demonstrated the role of the Fyn-PKCδ signaling pathway in status epilepticus (SE)-induced neuroinflammation and epileptogenesis in experimental models of temporal lobe epilepsy (TLE).
Shaunik Sharma   +5 more
doaj   +1 more source

Fractal Models for SAR images [PDF]

open access: yes, 2011
In this thesis the modeling of SAR (Synthetic Aperture Radar) images of natural surfaces described via fractal models is dealt with. A complete theoretical forward model linking the parameters describing the scene observed by the sensor to the stochastic
Zinno, Ivana
core   +1 more source

Efficient Doppler ambiguity resolver for video SAR

open access: yesElectronics Letters, 2018
The attitude of synthetic aperture radar (SAR) antenna cannot be fully controlled or precisely measured, which causes the ambiguity of Doppler centroid and thus degrades the image quality. A few Doppler ambiguity resolvers (DARs) have been developed by evaluating image quality, which focus on the data with all possible ambiguity numbers until the ...
Jinshan Ding   +3 more
openaire   +1 more source

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