Results 51 to 60 of about 41,766 (196)

Computational fluid dynamics modeling of symptomatic intracranial atherosclerosis may predict risk of stroke recurrence. [PDF]

, 2014
BackgroundPatients with symptomatic intracranial atherosclerosis (ICAS) of ≥ 70% luminal stenosis are at high risk of stroke recurrence. We aimed to evaluate the relationships between hemodynamics of ICAS revealed by computational fluid dynamics (CFD ...
Chen, Xiangyan, Fan, Florence SY, Feldmann, Edward, Fong, Albert K, Ip, Hing Lung, Johnson, Mark, Leng, Xinyi, Leung, Thomas WH, Liebeskind, David S, Liu, Liping, Miao, Zhongrong, Scalzo, Fabien, Soo, Yannie OY, Wong, Ka Sing   +13 more
core   +3 more sources

3D SAR Imaging Radar System at Microwave Frequencies: Experimental Results

2022 19th European Radar Conference (EuRAD), 2022
Microwave frequencies based on frequency-modulated continuous-wave (FMCW) technique as applied to synthetic aperture radar (SAR) imaging have many potential applications related to security, automotive, mapping, medical, and surveillance. In this paper, a three-dimensional (3D) SAR imaging system at K band frequencies is presented and its effective ...
Kumar, Rupesh, Molaei, Amir Masoud, Fusco, Vincent, Yurduseven, Okan   +3 more
openaire   +2 more sources

Evaluation of electric and magnetic fields distribution and SAR induced in 3D models of water containers by radiofrequency radiation using FDTD and FEM simulation techniques

, 2014
In this study, two software packages using different numerical techniques FEKO 6.3 with Finite-Element Method (FEM) and XFDTD 7 with Finite Difference Time Domain Method (FDTD) were used to assess exposure of 3D models of square, rectangular, and ...
Abdelsamie, Maher A. A., Hashim, Dzulkifly, Mustafa, Shuhaimi, Rahman, Russly b Abdul   +3 more
core   +1 more source

Multi-Baseline Bistatic SAR Three-Dimensional Imaging Method Based on Phase Error Calibration Combining PGA and EB-ISOA

Remote Sensing
Tomographic synthetic aperture radar (TomoSAR) is an advanced three-dimensional (3D) synthetic aperture radar (SAR) imaging technology that can obtain multiple SAR images through multi-track observations, thereby reconstructing the 3D spatial structure ...
Jinfeng He, Hongtu Xie, Haozong Liu, Zhitao Wu, Bin Xu, Nannan Zhu, Zheng Lu, Pengcheng Qin   +7 more
doaj   +1 more source

A Novel 3D Imaging Method for Airborne Downward-Looking Sparse Array SAR Based on Special Squint Model

International Journal of Antennas and Propagation, 2014
Three-dimensional (3D) imaging technology based on antenna array is one of the most important 3D synthetic aperture radar (SAR) high resolution imaging modes. In this paper, a novel 3D imaging method is proposed for airborne down-looking sparse array SAR
Xiaozhen Ren, Yao Qin, Lihong Qiao
doaj   +1 more source

Signal Processing Options for High Resolution SAR Tomography of Natural Scenarios

Remote Sensing, 2020
Synthetic Aperture Radar (SAR) Tomography is a technique to provide direct three-dimensional (3D) imaging of the illuminated targets by processing SAR data acquired from different trajectories. In a large part of the literature, 3D imaging is achieved by
Yanghai Yu, Mauro Mariotti d’Alessandro, Stefano Tebaldini, Mingsheng Liao   +3 more
doaj   +1 more source

High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects [PDF]

, 2015
The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects.
Almslmany, A. E., Cao, Q. S., Wang, C. Y.   +2 more
core   +2 more sources

SAR IMAGE DESPECKLING BY SELECTIVE 3D FILTERING OF MULTIPLE COMPRESSIVE RECONSTRUCTED IMAGES [PDF]

Progress In Electromagnetics Research, 2013
A despeckling technique based on multiple image reconstruction and selective 3-dimensional flltering is proposed. Multiple SAR images are reconstructed from a single SAR image by employing compressive sensing (CS) theory. In order to obtain multiple images from single SAR image, multiple subsets of pixels are selected from input SAR image by imposing ...
Mahboob Iqbal, Jie Chen, Wei Yang, Pengbo Wang, Bing Sun   +4 more
openaire   +1 more source

A Modified Keystone-Based Forward-Looking Arc Array Synthetic Aperture Radar 3D Imaging Method

Sensors, 2023
An arc array synthetic aperture radar (AA-SAR) is a new type of omnidirectional observation and imaging system. Based on linear array 3D imaging, this paper introduces a keystone algorithm combined with the arc array SAR 2D imaging method and proposes a ...
Xiaofan Zhu, Pingping Huang, Wei Xu, Weixian Tan, Yaolong Qi   +4 more
doaj   +1 more source

Towards Automatic SAR-Optical Stereogrammetry over Urban Areas using Very High Resolution Imagery

, 2018
In this paper we discuss the potential and challenges regarding SAR-optical stereogrammetry for urban areas, using very-high-resolution (VHR) remote sensing imagery.
Qiu, Chunping, Schmitt, Michael, Zhu, Xiao Xiang   +2 more
core   +1 more source