Results 71 to 80 of about 14,761 (217)
Using neural networks to estimate wave and wind parameters from an HF radar [PDF]
, 2010 High-frequency (HF) radar systems are used to provide measurements of waves, winds and currents from the sea. By the Doppler Effect the radars interpret the backscattered signal from the sea surface.
Sawaqed Herrero, Víctor
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Cs2SnI6: A Perovskite‐Based Electromagnetic Wave Absorbing Material
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lead halide perovskites and carbon‐based materials are interesting, high‐performing electromagnetic wave absorbing materials. However, only a few studies have been carried out to examine in detail the electromagnetic wave absorption properties of these materials.
Fei Han +11 more
wiley +1 more source
Small Science, Volume 6, Issue 4, April 2026.Interfacial engineering of Ti3C2TX nanosheets via Ca2+ and Cl− ion intercalation stabilized interlayer spacing within a PAM matrix. Combined with UV‐enhanced crosslinking, this approach enabled rapid gelation of an ultra‐stretchable, conductive Ti3C2TX‐PAM hydrogel.
Bangul Khan +9 more
wiley +1 more source
A New Method of Wave Mapping with HF Radar
International Journal of Antennas and Propagation, 2016 Study of wave height inversion with High-Frequency Surface Wave Radars (HFSWRs) has been going on for more than 40 years. Various wave inversion methods have been proposed, and HFSWRs have achieved great success in local wave measurements.
Lijie Jin, Biyang Wen, Hao Zhou
doaj +1 more source
Ocean waves and turbulence as observed with an adaptive coherent multifrequency radar [PDF]
, 1984 An adaptive coherent multifrequency radar system is developed for several applications. The velocity distribution (Doppler spectrum) and spectral intensity of 15 different irregularity scales (waves and turbulence) can be measured simultaneously ...
Gjessing, D. T., Hjelmstad, J.
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract Many intraplate volcanic chains are explained as hotspot trails formed by plate motion over mantle plumes, yet some deviate from this model. The Rodrigues Ridge, a volcanic lineament extending eastward from the Réunion hotspot track toward the Central Indian Ridge (CIR), is one such case.
Julien Seghi +10 more
wiley +1 more source
Photoplethysmography for Measuring Cognitive Load in XR Environments: A Systematic Review
Advanced Sensor Research, Volume 5, Issue 3, March 2026.ABSTRACT Photoplethysmography (PPG) is a low‐cost, low‐power biosensing technology with growing applications in education, particularly for monitoring cognitive load in eXtended Reality (XR) learning environments. Measuring cognitive load is critical for preventing overload and optimising immersive learning, yet existing approaches such as self‐reports
Alya Alshehhi +2 more
wiley +1 more source
IET Radar, Sonar & NavigationVirtual aperture extension of small aperture array has attracted wide attention in high‐frequency surface wave radar (HFSWR). A biologically inspired coupled (BIC) system is employed to virtually extend the array aperture.
Hongbo Li +4 more
doaj +1 more source
Nested Radar Systems for Remote Coastal Observations [PDF]
, 2006 Advances in radar technology now allow the observation of sea surface features at multiple scales, from kilometers, down to metres. In the same manner that nested models are used at different resolutions, nested radars of different frequencies can be ...
Bell, Paul +4 more
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A framework for modelling linear surface waves on shear currents in slowly varying waters
, 2019 We present a theoretical and numerical framework -- which we dub the Direct Integration Method (DIM) -- for simple, efficient and accurate evaluation of surface wave models allowing presence of a current of arbitrary depth dependence, and where ...
Ellingsen, Simen Å., Li, Yan
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