Results 41 to 50 of about 598 (182)
Remote Sensing, 2023 The amplitude and phase errors in array elements lead to uncertainties in the estimation of arrival angles (DOA), which, in turn, affect the accuracy of current measurements for high-frequency surface wave radar (HFSWR). To address this issue, this paper
Wei Fu +5 more
doaj +1 more source
Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu +8 more
wiley +1 more source
The Journal of Engineering, 2019 Radars operating in the high-frequency (HF) band can exploit propagation modes other than line-of-sight and are hence widely employed to provide over-the-horizon surveillance and remote sensing.
Stuart Anderson
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Advanced Science, Volume 13, Issue 40, 17 July 2026.In this study, an electrostatically self‐assembled WPU‐MXene@FC flexible fabric constructs a “nest‐like” structure on fibers, building construct MXene multiple loss paths, achieving ultra‐wideband absorption of 25.3–1200 GHz in a thickness of 1.8 mm, while also exhibiting superhydrophobicity, acid and alkali resistance, and bending resistance ...
Min Luo +7 more
wiley +1 more source
Recent Advances in Stimulated Brillouin Scattering in Integrated Photonics
Advanced Physics Research, Volume 5, Issue 7, July 2026.This review systematically surveys recent advances in stimulated Brillouin scattering (SBS) within integrated photonics. It begins by elucidating the fundamental mechanisms of stimulated coupling between photons and acoustic phonons in nanoscale waveguides, enhanced by the photoelastic and moving boundary effects.
Songyue Liu +8 more
wiley +1 more source
Battery Energy, Volume 5, Issue 4, July 2026.MXene‐based electrodes are established as high‐performance electrochemical energy storage materials. Sustainable energy storage systems are enabled through biologically derived MXene synthesis routes. Electrochemical kinetics and charge storage are enhanced by biomimetic MXene structures.
Shajjadur Rahman Shajid +3 more
wiley +1 more source
Study on the Detectability of the Sky-Surface Wave Hybrid Radar
Journal of Applied Mathematics, 2014 Working in the HF (high-frequency) band and the transmitter and receiver locating separately, the sky-surface wave hybrid radar both has the capabilities of the OTHR (over-the-horizon radar) and the advantage of the bistatic radar. As the electromagnetic
Hou Chengyu +3 more
doaj +1 more source
SWOT Observations Constrain a 4D‐Var State Estimate of the California Current System
Earth and Space Science, Volume 13, Issue 7, July 2026.Abstract The Surface Water and Ocean Topography (SWOT) mission provides high‐resolution sea surface height (SSH) observations at 2‐km spacing, resolving submesoscale features typical of ageostrophic motions and associated with instabilities. Here, we demonstrate the assimilation of SWOT data into a regional configuration of the MITgcm for the ...
A. Verdy +4 more
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Optimizing HAARP Beam Pattern for Generation of Strong F‐Region Field‐Aligned Irregularities
Radio Science, Volume 61, Issue 7, July 2026.Abstract Field‐aligned irregularities (FAIs) are the signatures of plasma turbulence and convection in the mid‐ and high‐latitude F‐region ionosphere, and also provide coherent backscatter targets for HF radars. To serve irregularity generation and characterization studies, we conducted experiments at the High‐frequency Active Auroral Research Program (
T. S. Anderson +7 more
wiley +1 more source
IET Radar, Sonar & Navigation, 2023 A great interest has been directed towards high frequency surface wave radar (HFSWR), because it is applied as long‐range early warning and real‐time measurements of sea surface condition tools in maritime surveillance.
Xiaowei Ji +3 more
doaj +1 more source