Results 31 to 40 of about 14,244,062 (276)
Micromachines, 2022 As a widely clinical detection method, ultrasonography (US) has been applied to the diagnosis of breast cancer. In this paper, the multi-element synthetic aperture focusing (M-SAF) is applied to the ring array of breast ultrasonography (US) imaging ...
Yang Wu +8 more
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A Novel Method for Building Contour Extraction Based on CSAR Images
Remote Sensing, 2023 Circular synthetic aperture radar (CSAR) can obtain more complete scattering characteristics by observing the target with different azimuth angles. Therefore, extracting the complete structure of the target from CSAR images is of great significance for ...
Jia Zhao, Daoxiang An, Leping Chen
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A High-Resolution Imaging Method for Strip-Map SAR With Missing Data
IEEE Access, 2020 Due to the long aperture, the high-resolution imaging for strip-map SAR with missing data is a challenge, in which the range migration correction and phase error correction are challenging.
Huajun Duan, Daiyin Zhu, Tianshun Xiang
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Circular SAR Optimization Imaging Method of Buildings
Leida xuebao, 2015 The Circular Synthetic Aperture Radar (CSAR) can obtain the entire scattering properties of targets because of its great ability of 360° observation. In this study, an optimal orientation of the CSAR imaging algorithm of buildings is proposed by applying
Wang Jian-feng +4 more
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AIRBORNE SAR IMAGE BRIGHTNESS COMPENSATION ENHANCEMENT PROCESSING BASED ON NSCT TRANSFORM [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Image brightness compensation processing is one of the important aspects to decide whether the image can be further used for remote sensing quantitative applications.
W. Wang, W. Wang, C. Cheng, Y. Wang
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Twin-Lever Multifunctional Meta-Optics With High Longitudinal Tolerance. [PDF]
Adv Sci (Weinh)We introduce a single‐layer, CMOS‐compatible metasurface that allows for polarization‐programmable, achromatic broadband dual‐mode imaging with high longitudinal tolerance. The twin‐lever design combines bright‐field focusing and vortex‐based edge‐enhanced imaging while managing axial intensity distribution from 488 to 633 nm.
Javed I +10 more
europepmc +2 more sources
A Full-Aperture Frequency Scaling Algorithm for Processing Dechirped Sliding Spotlight SAR Data
IEEE Access, 2023 This paper proposes a full-aperture method for processing sliding spotlight synthetic aperture radar (SAR) data with dechirp-on-receive. The frequency scaling algorithm (FSA) efficiently processes the dechirped signals because the range cell migration ...
Young-Geun Kang, Seong-Ook Park
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Multi-Circular SAR Three-Dimensional Image Formation via Group Sparsity in Adjacent Sub-Apertures
Remote Sensing, 2022 Multi-circular SAR(MCSAR) can obtain holographic three-dimensional (3D) images of interesting observation targets, which is a significant research field at present.
Weixing Yang, Daiyin Zhu
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The optimal design of a binaural sparse-aperture system
Results in Physics, 2020 Optical sparse-aperture (OSA) can greatly improve the spatial resolution of optical system. However, its optical designs are complex. This paper proposes a binaural sparse-aperture system with a simple and symmetrical structure, which is composed of ...
Luting Zhang +5 more
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Application of invariant moment method for HAPS ISAR imaging with micro parts
Tongxin xuebao, 2013 To resolve the micromotion in the HAPS(high altitude platform station) ISAR system,the invariant moment method for ISAR imaging with micro parts was proposed.Firstly,invariant moment tool was applied to classify the echoes of different sub-aperture,and ...
Zhao-qun QI +3 more
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