Results 1 to 10 of about 4,631,130 (249)

Optimized SAR imaging algorithm with SSL constraints for the Azimuth direction [PDF]

Scientific Reports, 2023
In order to address the low azimuth imaging problem of traditional Range Doppler (RD) algorithm, a high-resolution imaging algorithm with optimal azimuth sampling sequence length (SSL) constraints is hereby proposed.
Zhenli Wang, Mengsheng Cai, Qun Wang, Xianyi Chen   +3 more
doaj   +2 more sources

Deep Learning-Enabled Clinically Applicable CT Planbox for Stroke With High Accuracy and Repeatability

Frontiers in Neurology, 2022
BackgroundComputed tomography (CT) plays an essential role in classifying stroke, quantifying penumbra size and supporting stroke-relevant radiomics studies.
Yang Wang, Junkai Zhu, Jinli Zhao, Wenyi Li, Xin Zhang, Xiaolin Meng, Taige Chen, Ming Li, Meiping Ye, Renfang Hu, Shidan Dou, Huayin Hao, Xiaofen Zhao, Xiaoming Wu, Wei Hu, Cheng Li, Xiaole Fan, Liyun Jiang, Xiaofan Lu, Fangrong Yan   +19 more
doaj   +1 more source

An Improved Imaging Algorithm for HRWS Space-Borne SAR Data Processing Based on CVPRI

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
In space-borne synthetic aperture radar (SAR), the sliding spotlight mode can acquire images with both high-resolution and wide-swath in azimuth direction.
Yanan Guo, Pengbo Wang, Xinkai Zhou, Tao He, Jie Chen   +4 more
doaj   +1 more source

Synthetic aperture imagery for high-resolution imaging sonar

Frontiers in Marine Science, 2022
Synthetic aperture sonar (SAS) can provide high-resolution underwater images. Traditional fast imaging algorithms designed for multi-receiver synthetic aperture sonar (MSAS) are complex because the point target reference spectrum (PTRS) deduction and ...
Pan Huang, Peixuan Yang
doaj   +1 more source

Bi/multi-static Synthetic Aperture Radar Using Spaceborne Illuminator

Leida xuebao, 2023
Bi/multistatic Synthetic Aperture Radar (SAR) using spaceborne illuminator utilizes spaceborne platforms as transmitters and satellites, near-space vehicles, aircraft, and ground platforms as receivers, which allows high-resolution imaging of ground and ...
Junjie WU, Zhichao SUN, Zheng LV, Jianyu YANG, Caipin LI, Huarui SUN, Tianfu CHEN, Liangbo ZHAO, Hang REN   +8 more
doaj   +1 more source

Weighted Structured Sparse Reconstruction-Based Lamb Wave Imaging Exploiting Multipath Edge Reflections in an Isotropic Plate

Sensors, 2020
Lamb wave-based structural health monitoring techniques have the ability to scan a large area with relatively few sensors. Lamb wave imaging is a signal processing strategy that generates an image for locating scatterers according to the received Lamb ...
Caibin Xu, Zhibo Yang, Mingxi Deng
doaj   +1 more source

A Novel Imaging Algorithm for Wide-Beam Multiple-Receiver Synthetic Aperture Sonar Systems

Remote Sensing, 2023
In existing imaging algorithms for wide-beam multiple-receiver synthetic aperture sonar (SAS) systems, the double-square-root (DSR) range history of each receiver is generally converted into the sum of a single-square-root (SSR) range history and an ...
Jiafeng Zhang, Guangli Cheng, Jinsong Tang, Zhimin Xie, Haoran Wu   +4 more
doaj   +1 more source

An Improved UAV Bi-SAR Imaging Algorithm with Two-Dimensional Spatial Variant Range Cell Migration Correction and Azimuth Non-Linear Phase Equalization

Remote Sensing, 2023
The transmitter and receiver of unmanned aerial vehicle (UAV) bistatic synthetic aperture radar (Bi-SAR) are respectively carried on different UAV platforms, which has the advantages of flexible movement and strong concealment, and has broad application ...
Junjie Yan, Linghao Li, Han Li, Meng Ke, Xinnong Ma, Xinshuai Sun   +5 more
doaj   +1 more source

A Novel Imaging Algorithm for High-Resolution Wide-Swath Space-Borne SAR Based on a Spatial-Variant Equivalent Squint Range Model

Remote Sensing, 2022
High-Resolution Wide-Swath (HRWS) is an important development direction of space-borne Synthetic Aperture Radar (SAR). The two-dimensional spatial variation of the Doppler parameters is the most significant characteristic of the sliding spotlight space ...
Yanan Guo, Pengbo Wang, Jie Chen, Zhirong Men, Lei Cui, Lei Zhuang   +5 more
doaj   +1 more source

A Signal Model Based on the Space–Time Coding Array and a Novel Imaging Method Based on the Hybrid Correlation Algorithm for F-SCAN SAR

Remote Sensing, 2023
The F-SCAN principle is a better alternative to the scan-on-receive technique (SCORE) based on digital beamforming (DBF), which can avoid low gain caused by a conventional broad beam in the case of a wide swath.
Yuqing Liu, Pengbo Wang, Zhirong Men, Yanan Guo, Tao He, Rui Bao, Lei Cui   +6 more
doaj   +1 more source