Results 31 to 40 of about 48,172 (166)

Simulation and Analysis of SAR Images of Oceanic Shear-Wave-Generated Eddies

Sensors, 2019
Synthetic Aperture Radar (SAR) is widely used in oceanic eddies research. High-resolution SAR images should be useful in revealing eddy features and investigating the eddy imaging mechanism.
Yuhang Wang, Min Yang, Jinsong Chong
doaj   +1 more source

Restoration of Multichannel Microwave Radiometric Images [PDF]

IEEE Transactions on Pattern Analysis and Machine Intelligence, 1985
A constrained iterative image restoration method is applied to multichannel diffraction-limited imagery. This method is based on the Gerchberg-Papoulis algorithm utilizing incomplete information and partial constraints. The procedure is described using the orthogonal projection operators which project onto two prescribed subspaces iteratively.
Roland T. Chin, Chia-Lung Yeh, William S. Olson   +2 more
openaire   +2 more sources

Sparse Bayesian Learning Based Three-Dimensional Imaging Algorithm for Off-Grid Air Targets in MIMO Radar Array

Remote Sensing, 2018
In recent years, the development of compressed sensing (CS) and array signal processing provides us with a broader perspective of 3D imaging. The CS-based imaging algorithms have a better performance than traditional methods.
Zekun Jiao, Chibiao Ding, Xingdong Liang, Longyong Chen, Fubo Zhang   +4 more
doaj   +1 more source

Tomographic SAR 3D Imaging Method Based on Geometry and Polarization Joint Constraints

Leida xuebao
Tomographic Synthetic Aperture Radar (TomoSAR) is a key technique for 3D reconstruction of urban buildings. Although existing methods improve imaging quality by incorporating geometric constraints and have evolved into Polarimetric TomoSAR (PolTomoSAR ...
Shuhang DONG, Zekun JIAO, Liangjiang ZHOU, Xiaolan QIU   +3 more
doaj   +1 more source

Multiple-Bounce Scattering of Tomo-SAR in Single-Pass Mode for Building Reconstructions

IEEE Access, 2019
Building reconstruction is a very important application in SAR tomography in urban areas. Most of the current reconstruction methods are the combinations of the edge-based method and region growing method.
Ruichang Cheng, Xingdong Liang, Fubo Zhang, Qichang Guo, Longyong Chen   +4 more
doaj   +1 more source

Microwave SQUID multiplexer demonstration for cosmic microwave background imagers [PDF]

Applied Physics Letters, 2017
Key performance characteristics are demonstrated for the microwave superconducting quantum interference device (SQUID) multiplexer (μmux) coupled to transition edge sensor (TES) bolometers that have been optimized for cosmic microwave background (CMB) observations.
B. Dober, D. T. Becker, D. A. Bennett, S. A. Bryan, S. M. Duff, J. D. Gard, J. P. Hays-Wehle, G. C. Hilton, J. Hubmayr, J. A. B. Mates, C. D. Reintsema, L. R. Vale, J. N. Ullom   +12 more
openaire   +3 more sources

Three-Dimensional Imaging Method for Array ISAR Based on Sparse Bayesian Inference

Sensors, 2018
The problem of synthesis scatterers in inverse synthetic aperture radar (ISAR) make it difficult to realize high-resolution three-dimensional (3D) imaging.
Zekun Jiao, Chibiao Ding, Longyong Chen, Fubo Zhang   +3 more
doaj   +1 more source

A Geometric Semantic Enhanced TomoSAR Reconstruction Algorithm in an Urban Area: Analysis and Application

Journal of Remote Sensing
Tomographic synthetic aperture radar (TomoSAR) has the ability to separate mixed scatterers, making it highly suitable for urban 3-dimensional (3D) reconstruction.
Chunyi Wang, Qiancheng Yan, Xiaolan Qiu, Yitong Luo, Lingxiao Peng, Zhe Zhang   +5 more
doaj   +1 more source

Intelligence Evaluating Computational Power: A Multi-Factor Method

IEEE Access
With the rapid development of hardware technologies and the continuous optimization of deep learning tasks, accurately evaluating the computational power of artificial intelligence (AI) systems has become a critical requirement. However, the diversity of
Yuhuan Huang, Hang Li, Dongdong Lu, Zhe Zhang, Wenjie Tie   +4 more
doaj   +1 more source

Synthetic Aperture Radar Interferometry Based on Vortex Electromagnetic Waves

IEEE Access, 2019
The vortex electromagnetic (EM) wave carrying orbital angular momentum (OAM) offers a new degree of freedom for synthetic aperture radar (SAR) imaging. Because vortex EM waves have helical wavefronts, the vortex EM wave-based SAR echo contains the three ...
Xiang-Xi Bu, Zhuo Zhang, Long-Yong Chen, Ke-Hong Zhu, Siyan Zhou, Jian-Ping Luo, Ruichang Cheng, Xing-Dong Liang   +7 more
doaj   +1 more source