Results 1 to 10 of about 16,219 (178)

A Metalearning-based Sparse Aperture ISAR Imaging Method

open access: yesLeida xuebao, 2023
Sparse Aperture-Inverse Synthetic Aperture Radar (SA-ISAR) imaging methods aim to reconstruct high-quality ISAR images from the corresponding incomplete ISAR echoes.
Jingyuan XIA   +5 more
doaj   +1 more source

An ISAR Image Component Recognition Method Based on Semantic Segmentation and Mask Matching

open access: yesSensors, 2023
The inverse synthetic aperture radar (ISAR) image is a kind of target feature data acquired by radar for moving targets, which can reflect the shape, structure, and motion information of the target, and has attracted a great deal of attention from the ...
Xinli Zhu   +4 more
doaj   +1 more source

CLISAR-Net: A Deformation-Robust ISAR Image Classification Network Using Contrastive Learning

open access: yesRemote Sensing, 2022
The inherent unknown deformations of inverse synthetic aperture radar (ISAR) images, such as translation, scaling, and rotation, pose great challenges to space target classification. To achieve high-precision classification for ISAR images, a deformation-
Peishuang Ni   +5 more
doaj   +1 more source

Identification of hospitalized elderly patients at risk for adverse in-hospital outcomes in a university orthopedics and trauma surgery environment. [PDF]

open access: yesPLoS ONE, 2017
As a consequence of demographic changes, hospitals are confronted with increasing numbers of elderly patients, who are at high risk of adverse events during hospitalization.
Janine Gronewold   +3 more
doaj   +1 more source

Multiview ISAR Imaging for Complex Targets Based on Improved SBR Scattering Model

open access: yesInternational Journal of Antennas and Propagation, 2021
A novel multiview inverse synthetic aperture radar (ISAR) imaging method is proposed to simulate high-resolution and identifiable ISAR image of complex targets by handling large-angle and wide-bandwidth scattering data.
Tiantian Feng, Lixin Guo
doaj   +1 more source

A New Denoising System for SONAR Images

open access: yesEURASIP Journal on Image and Video Processing, 2009
The SONAR images are perturbed by speckle noise. The use of speckle reduction filters is necessary to optimize the image exploitation procedures.
Alexandru Isar, Sorin Moga, Dorina Isar
doaj   +2 more sources

GNSS-Based Passive Inverse SAR Imaging

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The utilization of global navigation satellite system (GNSS) signals for remote sensing has been a hot topic recently. In this article, the feasibility of the GNSS-based passive inverse synthetic aperture radar (P-ISAR) is analyzed. GNSS-based P-ISAR can
Pengbo Wang   +4 more
doaj   +1 more source

Polarimetric ISAR autofocusing

open access: yesIET Signal Processing, 2008
Interest in polarimetric inverse synthetic aperture radar (ISAR) systems has been growing because of their capability to provide extra information about the imaged target compared with single polarisation ISAR systems. Target classification and recognition can be improved by exploiting full polarisation ISAR images.
MARTORELLA, MARCO   +4 more
openaire   +3 more sources

Axial Attitude Estimation of Spacecraft in Orbit Based on ISAR Image Sequence

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Attitude estimation is a significant task for monitoring noncooperative spacecraft in orbit. Inverse synthetic aperture radar (ISAR) is an effective method to obtain the structure, size, and attitude of spacecraft.
Peng Kou   +5 more
doaj   +1 more source

Distributed MIMO-ISAR Sub-image Fusion Method

open access: yesLeida xuebao, 2017
The fast fluctuation associated with maneuvering a target’s radar cross-section often affects the imaging performance stability of traditional monostatic Inverse Synthetic Aperture Radar (ISAR).
Gu Wenkun, Wang Dangwei, Ma Xiaoyan
doaj   +1 more source

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