Results 71 to 80 of about 41,766 (196)

Retrieving the Size of Deep-subwavelength Objects via Tunable Optical Spin-Orbit Coupling

, 2018
We propose a scheme to retrieve the size parameters of a nano-particle on a glass substrate at a scale much smaller than the wavelength. This is achieved by illuminating the particle using two plane waves to create rich and non-trivial local polarization
Urbach, H. P., Xi, Zheng
core   +1 more source

A Novel Multimodal Fusion Framework Based on Point Cloud Registration for Near-Field 3D SAR Perception

Remote Sensing
This study introduces a pioneering multimodal fusion framework to enhance near-field 3D Synthetic Aperture Radar (SAR) imaging, crucial for applications like radar cross-section measurement and concealed object detection.
Tianjiao Zeng, Wensi Zhang, Xu Zhan, Xiaowo Xu, Ziyang Liu, Baoyou Wang, Xiaoling Zhang   +6 more
doaj   +1 more source

Numerical investigation of novel microwave applicators based on zero-order mode resonance for hyperthermia treatment of cancer [PDF]

, 2016
This paper characterizes three novel microwave applicators based on zero-order mode resonators for use in hyperthermia treatment of cancer. The radiation patterns are studied with numerical simulations in muscle tissue-equivalent model at 434 MHz.
Rodrigues, Dario B., Stauffer, Paul R., Vrba, David, Vrba, Jan   +3 more
core   +1 more source

Inexpensive SAR testbed for 3D mmWave imaging applications

IET Radar, Sonar & Navigation
Abstract In this paper, the authors investigate and develop a low‐cost synthetic aperture radar (SAR) testbed and utilise it to capture and reconstruct high‐resolution 3D mmWave SAR images. Despite much attention from both industrial and academic scholars, cost restraints and complexity have hindered the deployment of SAR systems ...
S M Yahea Mahbub, Muhammad Dawood, Ehtesham Shareef   +2 more
openaire   +1 more source

Exploiting SAR visual semantics in TomoSAR for 3D modeling of buildings

National Science Open
Recently a new paradigm is emerging in synthetic aperture radar (SAR) three-dimensional (3D) imaging technology where the imaging performance is enhanced by exploiting SAR visual semantics.
Wang Wei, Wang Haixia, Yu Liankun, Dong Qiulei, Hu Zhanyi   +4 more
doaj   +1 more source

A 3D Reconstruction Technique for UAV SAR Under Horizontal-Cross Configurations

Remote Sensing
Synthetic Aperture Radar (SAR) three-dimensional (3D) imaging has considerable potential in disaster monitoring and topographic mapping. Conventional 3D SAR imaging techniques for unmanned aerial vehicle (UAV) formations require rigorously regulated ...
Junhao He, Dong Feng, Chongyi Fan, Beizhen Bi, Fengzhuo Huang, Shuang Yue, Zhuo Xu, Xiaotao Huang   +7 more
doaj   +1 more source

3D-Image Reconstruction using MIMO-SAR FMCW Radar

With the advancement of millimeter-wave radar technology, Synthetic Aperture Radar (SAR) imaging at millimeter-wave frequencies has gained significant attention in both academic research and industrial applications. However, traditional SAR imaging algorithms primarily focus on extracting two-dimensional information from detected targets, which limits ...
Jha, Ayush, Chandrika, Dhanireddy, Seelamantula, Chandra Sekhar, Thakur, Chetan Singh   +3 more
openaire   +2 more sources

Amplitude and Phase Errors Correction for Array 3D SAR System Based on Single Prominent Point Like Target Echo Data

Leida xuebao, 2014
The Array 3D SAR has the ability of resolving imaging in three dimensions using the novel combination of linear array antennas and synthetic aperture.
Yang Xiao-lin, Tan Wei-xian, Qi Yao-long, Wang Yan-ping, Hong Wen   +4 more
doaj   +1 more source

Total variation regularization for manifold-valued data

, 2013
We consider total variation minimization for manifold valued data. We propose a cyclic proximal point algorithm and a parallel proximal point algorithm to minimize TV functionals with $\ell^p$-type data terms in the manifold case.
Demaret, Laurent, Storath, Martin, Weinmann, Andreas   +2 more
core   +1 more source

A 3D Blur Suppression Method for High-Resolution and Wide-Swath Blurred Images Based on Estimating and Eliminating Defocused Point Clouds

Remote Sensing
Traditional single-channel Synthetic Aperture Radar (SAR) cannot achieve high-resolution and wide-swath (HRWS) imaging due to the constraint of the minimum antenna area.
Yuling Liu, Fubo Zhang, Longyong Chen, Tao Jiang   +3 more
doaj   +1 more source