Results 21 to 30 of about 61,185 (361)

Sar2color: Learning Imaging Characteristics of SAR Images for SAR-to-Optical Transformation

open access: yesRemote Sensing, 2022
Optical images are rich in spectral information, but difficult to acquire under all-weather conditions, while SAR images can overcome adverse meteorological conditions, but geometric distortion and speckle noise will reduce the quality of SAR images and thus make image interpretation more challenging.
Zhe Guo   +5 more
openaire   +2 more sources

An unusual cause of pulmonary infiltrates mimicking pulmonary edema: metastatic calcifications

open access: yesRadiology Case Reports, 2022
Metastatic calcification is an uncommon condition with underlying abnormal bone and calcium metabolism, leading to ectopic deposition of calcium in soft tissues.
Chun Hong Suen, MBBS, FRCR   +3 more
doaj   +1 more source

An Overview of OFDM SAR Imaging Methods

open access: yesLeida xuebao, 2020
In recent years, Orthogonal Frequency Division Multiplexing (OFDM) signal has been widely used in Synthetic Aperture Radar (SAR) imaging research due to its orthogonality and large bandwidth.
ZHANG Tianxian, XIA Xiang-Gen
doaj   +1 more source

Curved Synthetic Aperture Radar for Near-Field Terahertz Imaging

open access: yesIEEE Photonics Journal, 2023
High resolution imaging techniques will play an essential role in the future smart imaging applications to provide potential solutions for accurate detection, monitoring and classification of the target.
Mavis Gezimati, Ghanshyam Singh
doaj   +1 more source

Concept, System, and Method of Holographic Synthetic Aperture Radar

open access: yesLeida xuebao, 2020
Over time, Synthetic Aperture Radar (SAR) imaging techniques have been developed from twodimensional SAR, two-and-a-half-dimensional SAR (InSAR), and three-dimensional SAR to multi-dimensional SAR. This has led to great technological achievements.
DING Chibiao, QIU Xiaolan, WU Yirong
doaj   +1 more source

Frequency-Scaling-Based Spaceborne Squint SAR Sparse Imaging

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
In synthetic aperture radar (SAR), due to the characteristics of squint data in spaceborne imaging geometry, a more accurate range cell migration correction operation is necessary.
Yufan Song   +4 more
doaj   +1 more source

SAR Image Segmentation with GMMs [PDF]

open access: yesInternational Conference on Radar Systems (Radar 2017), 2017
This paper proposes a new approach for Synthetic Aperture Radar (SAR) image segmentation. Segmenting SAR images can be challenging because of the blurry edges and the high speckle. The segmentation proposed is based on a machine learning technique.
Belloni, Carole   +3 more
openaire   +4 more sources

RCS measurement and SAR imaging verification based on blast furnace stock line

open access: yes工程科学学报, 2018
Based on the requirements of blast furnace burden surface monitoring imaging, this study investigated the measurement of the radar cross section (RCS) of the blast furnace radar target.
WANG Chen-lu   +3 more
doaj   +1 more source

Synthetic Aperture Radar Three-dimensional Imaging——From TomoSAR and Array InSAR to Microwave Vision

open access: yesLeida xuebao, 2019
Synthetic Aperture Radar three-Dimensional (SAR 3D) imaging technology can eliminate severe overlap in 2D images, and improve target recognition and 3D modeling capabilities, which have become an important trend in SAR development.
DING Chibiao   +5 more
doaj   +1 more source

SAR moving target imaging using group sparsity [PDF]

open access: yes, 2013
SAR imaging of scenes containing moving targets results in defocusing in the reconstructed images if the SAR observation model used in imaging does not take the motion into account.
Önhon, Özben Naime   +2 more
core   +1 more source

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