Results 11 to 20 of about 645 (179)

Janus Nanostructures Enabled by Confined Interfacial Engineering for Enhanced Electromagnetic Response [PDF]

Advanced Science, Volume 13, Issue 60, 28 October 2026.
Confined diffusion‐driven interfacial engineering enables the nanoscale construction of asymmetric SiC@C Janus hollow nanoshells, achieving synergistic impedance matching and electromagnetic energy dissipation for highly efficient broadband microwave absorption at ultralow filler loading.
Limeng Song, Cheng Song, Feiyue Hu, Yongqiang Chen, Linan Wang, Huagao Wang, Li Guan, Duo Chen, Kesong Yu, Yabo Huang, Shihao Jia, Xin Xu, Qiancheng Gao, Dou Zhang, Hailong Wang, Haijiao Xie, Rui Zhang, Bingbing Fan   +17 more
wiley   +2 more sources

Spread Sea Clutter Suppression in HF Hybrid Sky-Surface Wave Radars Based on General Parameterized Time-Frequency Analysis

International Journal of Antennas and Propagation, 2020
In high-frequency (HF) hybrid sky-surface wave radar, the first-order sea clutter broadening is severe under the action of ionospheric phase disturbance and bistatic angles. In this paper, a cascaded method is described to suppress the spread sea clutter.
Zhuo-qun Wang, Ya-jun Li, Jun-nan Shi, Peng-fei Wang, Ai-hua Liu, Xin-fan Xia, De-hong Chen   +6 more
doaj   +2 more sources

Dimensional Engineering of Carbon‐Based Hybrids: From 1D Conductive Networks to 3D Porous Architectures for Next‐Generation Microwave Absorption [PDF]

Advanced Science, Volume 13, Issue 52, 18 September 2026.
This review explores dimensional architecture engineering to overcome the impedance‐attenuation trade‐off in electromagnetic wave absorbing materials. By analyzing 1D to 3D structures and their multidimensional hybrids, we highlight synergistic mechanisms for enhanced performance.
Chuanyu Liu, Xiaoxin Guo, Xunlong Zhang, Ruiling Sun, Xingyu Zhang, Can Ge, Xuhong Yang, Yuqing Liu   +7 more
wiley   +2 more sources

A Directional Wave Spectrum Inversion Algorithm with HF Surface Wave Radar Network

Remote Sensing
In high-frequency surface wave radar (HFSWR) systems, the retrieval of the directional wave spectrum has remained challenging, especially in the case of echoes from long ranges with a low signal-to-noise ratio (SNR).
Fuqi Mo, Xiongbin Wu, Xiaoyan Li, Liang Yu, Heng Zhou   +4 more
doaj   +2 more sources

High-frequency ocean radar support for Tsunami Early Warning Systems

Geoscience Letters, 2018
A high-frequency (HF) ocean radar system is a shore-based remote sensing system to simultaneously monitor ocean surface currents, waves and wind far beyond the horizon.
Anna Dzvonkovskaya, Leif Petersen, Thomas Helzel, Matthias Kniephoff   +3 more
doaj   +1 more source

Remote Observation of a Small Meteotsunami in the Bight of Benin Using HF Radar Operating in Lower HF Band

IEEE Access, 2019
High-frequency (HF) surface-wave (SW) radar systems have demonstrated their capability to capture the signals from seismic and non-seismic tsunami events using the estimation of surface current changes. Several ocean radar systems, operating in the upper
Anna Dzvonkovskaya, Dejan Nikolic, Vladimir Orlic, Miroslav V. Peric, Nikola Tosic   +4 more
doaj   +1 more source

Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar

Remote Sensing, 2018
Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity.
Steven L. Morey, Nicolas Wienders, Dmitry S. Dukhovskoy, Mark A. Bourassa   +3 more
doaj   +1 more source

Comparison of Measured Surface Currents from High Frequency (HF) and X-Band Radar in a Marine Protected Coastal Area of the Ligurian Sea: Toward an Integrated Monitoring System

Remote Sensing, 2020
Two different ground-based remote sensing instruments can be used for the near-real-time monitoring of surface waves and currents, namely the high frequency HF radar and the microwave X-band radar. The HF system reaches larger offshore distances at lower
Lyuba Novi, Francesco Raffa, Francesco Serafino   +2 more
doaj   +1 more source

Inversion of HF Radar Doppler Spectra Using a Neural Network

Journal of Marine Science and Engineering, 2019
For a number of decades, coastal HF radar has been used to remotely measure ocean surface parameters, including waves, at distances exceeding 100 km. The information, which has value in many ocean engineering applications, is obtained using the HF radar ...
Rachael L. Hardman, Lucy R. Wyatt
doaj   +1 more source

Wind Direction Inversion from Narrow-Beam HF Radar Backscatter Signals in Low and High Wind Conditions at Different Radar Frequencies

Remote Sensing, 2018
Land-based, high-frequency (HF) surface wave radar has the unique capability of monitoring coastal surface parameters, such as current, waves, and wind, up to 200 km off the coast.
Wei Shen, Klaus-Werner Gurgel
doaj   +1 more source