Results 61 to 70 of about 13,090 (253)

Regulating the Dielectric Behavior of Conductive Polymers Through Vapor Phase Infiltration for Tunable Microwave Absorption

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Vapor phase infiltration (VPI) enables atomic‐level dielectric regulation in conductive polymer foams. The VPI‐treated foam exhibits enhanced absorption efficiency per unit thickness (~2.6 times), dynamic frequency tunability (94.5% coverage in 2–18 GHz), and on/off switching ability while retaining performance under acid/alkali exposure and repeated ...
Pengpeng Mou, Jinchuan Zhao, Xiao Liu, Lihong Wu, Xin Li, Gengping Wan, Guizhen Wang   +6 more
wiley   +1 more source

Marine Radar Target Ship Echo Generation Algorithm and Simulation Based on Radar Cross-Section

Journal of Marine Science and Engineering
In this study, a simplified radar echo signal model suitable for radar simulators and a Radar Cross-Section (RCS) calculation model based on the Physical Optics (PO) method was developed.
Chang Li, Xiao Yang, Hongxiang Ren, Shihao Li, Xiaoyu Feng   +4 more
doaj   +1 more source

Rough surface RCS measurements and simulations using the Physical Optics Approximation [PDF]

, 2013
International audienceThe objective of this article is to develop innovative approaches to obtain analytical expressions of the Radar Cross Section (RCS) of perfectly-conducting random rough surfaces under the Physical Optics (PO) approximation.
Bourlier, Christophe, Chauveau, Janic, Corbel, Charlotte, Pinel, Nicolas   +3 more
core   +3 more sources

Neural Network–Assisted Metasurface Retroreflector With Wide‐Angle Adaptivity

Electron, EarlyView.
This work proposes a wide‐angle, multi‐polarization, self‐sensing, and self‐adaptive intelligent metasurface retroreflector, with a planar profile and ultrathin thickness. By integrating a pre‐trained artificial neural network (ANN), the metasurface retroreflector can recognize the incident angle and promptly adapt to changes in the incoming wave.
Jing Ning, Xunfan Wang, Kun Duan, Weixu Yang, Junming Zhao, Tian Jiang, Ke Chen, Yijun Feng   +7 more
wiley   +1 more source

On the possibility of radar echo detection of ultra-high energy cosmic ray- and neutrino-induced extensive air showers [PDF]

, 2000
We revisit and extend the analysis supporting a 60 year-old suggestion that cosmic rays air showers resulting from primary particles with energies above 10^{18} eV should be straightforward to detect with radar ranging techniques, where the radar echoes ...
Appleton, Balanis, Baltrusaitis, Blackett, Bourdeau, Buonsanto, Capelle, Colwell, Gallagher, Greenhow, Hanbury Brown, Jones, Jones, Kamata, Kraus, Lidga, Lidga, Lovell, Matano, Peter W Gorham, Poulter, Rossi, Seaton, Segre, Skolnik, Sovers, Thomas, Watson Watt, Watson Watt, Wehner, Williams   +30 more
core   +2 more sources

Intelligent materials for on‐demand electromagnetic absorption

InfoMat, Volume 8, Issue 5, May 2026.
This review introduces an innovative “stimulus‐state‐property” paradigm, facilitating a fundamental transition from static to dynamically intelligent electromagnetic wave absorption (EMWA). The key advancement lies in the synergistic integration of external fields with structurally engineered metamaterials and tunable components.
Chongyang Chai, Lin Yang, Haoxu Si, Bo Hao, Yi Zhang, Cuiping Li, Jingwei Zhang, Chunhong Gong   +7 more
wiley   +1 more source

Analyzing the electromagnetic scattering characteristics for plasma targets based on shooting and bouncing ray method

AIP Advances, 2019
The analysis of radar target electromagnetic scattering characteristics is the basis of radar target detection, imaging and recognition. The high-frequency algorithm shooting and bouncing ray (SBR) method is used to calculate the radar cross section (RCS)
Junyang Zhou, Yiping Han
doaj   +1 more source

Copolar Calibration of Multistatic Radar in the Presence of Multipath [PDF]

, 2016
This paper addresses the Polarimetrie calibration of the nodes of a multistatic radar system, by using a reference object with known scattering matrix, such as a metallic sphere.
Fioranelli, Francesco, Gini, Fulvio, Greco, Maria, Griffiths, Hugh, Palamà, Riccardo, Ritchie, Matthew   +5 more
core   +3 more sources

Measurement of diffraction radar cross-section(RCS)

Electronics Letters, 2000
A technique is described for measuring the RCS of 2D (two-dimensional) diffracting sources. The measured and predicted diffraction RCS of a conducting halfplane edge and a gap in an otherwise infinite conducting plane are presented. The technique may be used to measure the diffraction coefficient of an impedance discontinuity.
openaire   +1 more source

From Molecular Motion to Macroscopic Function: Tailoring Tetraarylethylene Supramolecular Architectures for Aggregation‐Induced Emission and Wave Absorption

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Integrating light emission and electromagnetic wave (EMW) absorption into a single material opens up possibilities for multienvironmental applications. Herein, we propose a novel “molecular engineering‐pyrolysis conversion” strategy to construct a bifunctional system with tunable photoluminescence and efficient EMW absorption performance.
Renjie Wang, Zhanming Wu, Zengjihong Zhao, Hongbin Lu, Yongfeng Liu, Zhiqiang Li, Xiaojun Zeng, Shouzhi Pu   +7 more
wiley   +1 more source