Results 11 to 20 of about 271,781 (289)

Combining Local Electromagnetic Scattering and Global Structure Features for SAR Open Set Recognition

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Automatic target recognition (ATR) is crucial for synthetic aperture radar (SAR) image interpretation. However, existing SAR ATR primarily rely on algorithms from the field of computer vision, many methods have not adequately considered the imaging ...
Qinjie Lin, Hao Sun, Yanjie Xu, Junyu Wang, Kefeng Ji, Gangyao Kuang   +5 more
doaj   +2 more sources

Over-the-air Multifunctional Wideband Electromagnetic Signal Processing using Dynamic Scattering Arrays

IEEE Transactions on Wireless Communications
To meet the stringent requirements of next-generation wireless networks, multiple-input multiple-output (MIMO) technology is expected to become massive and pervasive. Unfortunately, this could pose scalability issues in terms of complexity, power consumption, cost, and processing latency. Therefore, novel technologies and design approaches, such as the
Davide Dardari
openaire   +3 more sources

Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding

Light: Science & Applications
A novel multispectral smart window has been proposed, which features dynamic modulation of light transmittance and effective shielding against electromagnetic microwave radiation.
Ruicong Zhang, Zicheng Song, Wenxin Cao, Gang Gao, Lei Yang, Yurong He, Jiecai Han, Zhibo Zhang, Tianyu Wang, Jiaqi Zhu   +9 more
doaj   +2 more sources

Dynamic Scattering Arrays for Simultaneous Electromagnetic Processing and Radiation in Holographic MIMO Systems

arXiv.org
To meet the stringent requirements of next-generation wireless networks, multiple-input multiple-output (MIMO) technology is expected to become massive and pervasive. Unfortunately, this could pose scalability issues in terms of complexity, power consumption, cost, and processing latency. Therefore, novel technologies and design approaches, such as the
Davide Dardari
openaire   +3 more sources

Directional Wave Scattering Distribution Modes Analysis and Synthesis of Random Ocean Media Roughness for SAR Electromagnetic Interactions Using Feature Fusion in Dynamic Sea States: A Survey

IEEE Access
Ocean waves have long been a research topic, and numerous formulas of the ocean wave spectrum have been widely developed to provide new prospects for ocean experiments and the advancement of radar probing. Nonetheless, the wave spectra developed by researchers fall short of the standards set by remote sensing specialists, mainly due to the limitation ...
Iman Heidarpour Shahrezaei, Hyun-Cheol Kim   +1 more
openaire   +3 more sources

A Revisit of Electromagnetic Wave Scattering by a Metal Isotropic Body in a Lossless Environment with Magnetic Sensor Excitation

Sensors
This paper investigates the electromagnetic fields being scattered by a metal spherical object in a vacuum environment, providing a numerical implementation of the obtained analytical results. A time-harmonic magnetic dipole source, far enough, emits the
Panayiotis Vafeas
doaj   +2 more sources

Study of the Radar Cross-Section of Turbofan Engine with Biaxial Multirotor Based on Dynamic Scattering Method

Energies, 2020
With the continuous advancement of rotor dynamic electromagnetic scattering research, the radar cross-section (RCS) of turbofan engines has attracted more and more attention.
Zeyang Zhou, Jun Huang
doaj   +1 more source

Multi-Functional Reconfigurable Intelligent Surfaces for Enhanced Sensing and Communication

Sensors, 2023
In this paper, we propose a reconfigurable intelligent surface (RIS) that can dynamically switch the transmission and reflection phase of incident electromagnetic waves in real time to realize the dual-beam or quad-beam and convert the polarization of ...
Khushboo Singh, Mondeep Saikia, Karthick Thiyagarajan, Dushmantha Thalakotuna, Karu Esselle, Sarath Kodagoda   +5 more
doaj   +1 more source

Influence of Rotor Dynamic Scattering on Helicopter Radar Cross-Section

Sensors, 2020
With the continuous improvement and development of armed helicopters, the research on their stealth characteristics has become more and more in depth. In order to obtain the complex effect of stealth characteristics caused by the high-speed rotation of ...
Zeyang Zhou, Jun Huang
doaj   +1 more source

Metasurface with dynamic chiral meta-atoms for spin multiplexing hologram and low observable reflection

PhotoniX, 2022
Spin light manipulation based on chiral metasurfaces is a striking hotspot that has intrigued huge attention. Circular dichroism, a unique phenomenon of chiral atoms/molecules, has been regarded as another auxiliary dimension for guiding electromagnetic ...
He Wang, Zhe Qin, Lingling Huang, Yongfeng Li, Ruizhe Zhao, Hongqiang Zhou, Haoyang He, Jieqiu Zhang, Shaobo Qu   +8 more
doaj   +1 more source