Results 111 to 120 of about 19,915 (242)

High resolution observations of spectral width features associated with ULF wave signatures in artificial HF radar backscatter [PDF]

, 2004
International audienceThe EISCAT high power heating facility at Tromsø, northern Norway, has been utilised to generate artificial radar backscatter in the fields of view of the CUTLASS HF radars.
Woodfield, E.E., Dhillon, R. S., J. A. Davies (4412452), Milan, S.E., T. K. Yeoman, R. S. Dhillon, L. J. Baddeley (7590143), D. M. Wright, E. E. Woodfield (7590071), E. E. Woodfield, Yeoman, T. K., Woodfield, E. E., J. A. Davies, Tim K. Yeoman (7583066), Davies, J.A., Milan, S. E., Wright, D.M., Lester, M., L. J. Baddeley, Wright, D. M., Steve E. Milan (7589666), M. Lester, R. Dhillon (7590146), M. Lester (7589660), Davies, J. A., S. E. Milan, D. M. Wright (7583069), Baddeley, L. J., Dhillion, R.S., Yeoman, T.K., Baddeley, L.J.   +30 more
core   +1 more source

Passive Radar for Opportunistic Monitoring in E-Health Applications

IEEE Journal of Translational Engineering in Health and Medicine, 2018
This paper proposes a passive Doppler radar as a non-contact sensing method to capture human body movements, recognize respiration, and physical activities in e-Health applications.
Wenda Li, Bo Tan, Robert Piechocki
doaj   +1 more source

Revealing Coastal Storm‐Wave Transformations From SWOT HR Observation: The English Channel Case Study

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Swell propagation and transformation across variable bathymetry and coastal obstacles fundamentally control nearshore wave energy redistribution, sediment transport, and shoreline evolution. Conventional satellite altimetry cannot adequately resolve these dynamics, particularly refraction and diffraction as swell transition into shallow waters.
Md Saiful Islam, Emma Imen Turki, Carlos Lopez Solano, Laurent Froideval, Xavier Chartrand, Pascal Matte, Erwin W. J. Bergsma, Benoit Laignel, Nicolas Picot   +8 more
wiley   +1 more source

Interhemispheric asymmetries in the occurrence of magnetically conjugate sub-auroral polarisation streams [PDF]

, 2005
Earthward injections of energetic ions and electrons mark the onset of magnetospheric substorms. In the inner magnetosphere (L∼4), the energetic ions drift westward and the electrons eastward, thereby enhancing the equatorial ring current.
Parkinson, M.L., Frey, H.U., H. U. Frey, Ye, H., Parkinson, M. L., Kikuchi, T., Dyson, P. L., M. L. Parkinson, Milan, S.E., T. K. Yeoman, M. Pinnock, Yeoman, T. K., Wild, J.A., J. C. Devlin, Devlin, J. C., Milan, S. E., Lester, M., Wild, J. A., H. Ye, J. A. Wild, M. Lester, Pinnock, M., T. Kikuchi, S. E. Milan, Devlin, J.C., Frey, H. U., Yeoman, T.K.   +26 more
core   +1 more source

An alternative representation of Synthetic Aperture Radar images as an aid to the interpretation of englacial observations [PDF]

The Cryosphere
Ground-penetrating radar reveals subsurface geometry and ice stratigraphy that contains information about past and present dynamics of the cryosphere. Synthetic Aperture Radar (SAR) is a processing technique based on averaging the radar echoes received ...
Á. Arenas-Pingarrón, A. M. Brisbourne, C. Martín, H. F. J. Corr, C. Robinson, T. A. Jordan, P. V. Brennan   +6 more
doaj   +1 more source

An Analysis of Hurricane Eyewall Ice Using a Novel Lagrangian Trajectory and Growth Model

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract Ice crystals in tropical cyclones (TCs) remain infrequently observed and difficult to model using Eulerian microphysics parameterizations. To better understand TC eyewall ice crystal processes, the Ice Crystal Trajectory Growth (ICTG) model, previously applied to an idealized squall line, was used to simulate Lagrangian ice crystal ...
Bruno S. Rojas, Anthony C. Didlake Jr., Jerry Y. Harrington, Chelsey N. Laurencin, Yunji Zhang   +4 more
wiley   +1 more source

High-latitude observations of impulse-driven ULF pulsations in the ionosphere and on the ground [PDF]

, 2003
International audienceWe report the simultaneous observation of 1.6?1.7 mHz pulsations in the ionospheric F-region with the CUTLASS bistatic HF radar and an HF Doppler sounder, on the ground with the IMAGE and SAMNET magnetometer arrays, and in the ...
Menk, F. W., Lester, M., Honary, F., Wright, D. M., F. W. Menk, M. Lester, T. K. Yeoman (7601525), F. Honary (7604621), T. K. Yeoman, M. Lester (7589660), D. M. Wright (7583069), D. M. Wright, F. Honary, F. W. Menk (7675571), Yeoman, T. K.   +14 more
core   +1 more source

Reconstructing Marine Boundary Layer Jets Over the South China Sea Using Machine Learning

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Marine boundary layer jets (MBLJs) over the South China Sea (SCS) play a critical role in coastal heavy rainfall, yet their structure remains uncertain due to limited wind observations over the ocean. Here, we develop a U‐Net–based reconstruction framework to estimate 950‐hPa winds from satellite‐derived sea surface winds, providing a ...
Yican Lin, Yu Du, Jiuke Wang
wiley   +1 more source

Reliability and validity of motion sensor and radar for measuring shuttlecock velocity in badminton

International Journal of Racket Sports Science
Radar doppler and inertial measurement unit are often used to analyze the projectile velocity. The aim of the present study was to analyse the reliability and validity of a specifically motion sensor (named: Zepp Tennis) and a radar (Doppler-radar gun ...
Michael Phomsoupha, Florie Bonneau, Guillaume Laffaye   +2 more
doaj  

Evaluation of Radar Observation Contribution to CMA-MESO Assimilation System

应用气象学报
Radar wind observations, such as Doppler weather radar radial velocity and wind profiler data, are critical for initializing numerical weather prediction (NWP) models due to their high spatiotemporal resolution.
Jing Yujie, Zhang Lin, Jiang Yuan, Wang Ruichun, Wang Dan, Liu Jingwei   +5 more
doaj   +1 more source