Time-domain Statistics of the Electromagnetic Bias in GNSS-Reflectometry [PDF]
Remote Sensing, 2015 Global Navigation Satellite Systems-Reflectometry (GNSS-R) is an emerging remote sensing technique that uses navigation signals reflected on the Earth’s surface as sources of opportunity for scatterometry and altimetry.
Ali Ghavidel, Adriano Camps
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Numerical Computation of the Electromagnetic Bias in GNSS-R Altimetry [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2016 In radar altimetry, the electromagnetic (EM) bias is originated by the smaller reflectivity of wave crests than troughs; thus, the average sea surface height is underestimated. Bias uncertainty is currently the largest factor in altimetry error budgets.
Adriano Camps
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Impact of Rain, Swell, and Surface Currents on the Electromagnetic Bias in GNSS-Reflectometry [PDF]
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016 The assessment of the electromagnetic (EM) bias is required to predict the performance of upcoming global navigation satellite systems-reflectometry (GNSS-R) altimetry systems, and its impact in data assimilation climate studies. In previous studies, the EM bias in bistatic GNSS-R altimetry (L-band) was numerically estimated for a wind-driven sea ...
Adriano Camps
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Comparing the effects of different electromagnetic stimulation on lower limb motor impairment after stroke: a protocol for systematic review and network meta-analysis [PDF]
Frontiers in NeurologyObjectiveStroke is a leading cause of death and long-term disability worldwide. Most survivors develop multiple functional impairments, with lower limb dysfunction being particularly prevalent and impactful, and has emerged as a key factor undermining ...
Raoting Zhang +6 more
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Electromagnetic bias at off-nadir incidence angles [PDF]
Journal of Geophysical Research, 2005 Measurements of the electromagnetic (EM) bias in altimeter sea surface ranges at nadir and off‐nadir incidence angles were made during the Brigham Young University (BYU) Off‐Nadir Experiment (Y‐ONE) in the months of March and April, 2003. Tower‐mounted C‐ and Ku‐band radars were deployed along with laser rangefinders and a weather station to measure ...
Karl F Warnick
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Tunable surface electromagnetic waves at a graphene–hypercrystal boundary under magnetic bias [PDF]
Scientific ReportsTransverse magnetic (TM) and transverse electric (TE) surface electromagnetic waves supported by a graphene–hypercrystal interface are studied in the presence of an external static magnetic field. The system consists of a graphene monolayer placed at the
Illia Fedorin
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Enhanced electromagnetic wave absorption performance by introducing exchange bias in a CIP@γ-FeOOH heterostructure [PDF]
iScienceSummary: High-performance electromagnetic wave (EMW) absorbing materials are urgently needed to mitigate electromagnetic (EM) pollution. Carbonyl iron powder (CIP), a conventional magnetic loss absorber, often shows limited absorption bandwidth at low ...
Yunpeng Li +7 more
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Wave slope and wave age effects in measurements of electromagnetic bias [PDF]
Journal of Geophysical Research, 2004 We present measurements of Ku band electromagnetic (EM) bias made for 2 months from a platform in Bass Strait off the southeast coast of Australia during the austral winter of 1992. EM bias, ε, the difference between the electromagnetic and true mean sea levels, was measured using Doppler scatterometers.
W Kendall Melville
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Electromagnetic bias estimates based on TOPEX, buoy, and wave model data [PDF]
Journal of Geophysical Research, 2003 For quantitative studies of the ocean using altimetric measurements, the sea surface height measurements must be corrected for the electromagnetic (EM) bias effect. Project‐provided EM bias correction algorithms were derived from the altimeter data as a function of wind speed and wave height through variance minimization techniques [Gaspar et al., 1994]
Detlef Stammer +2 more
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Sea surface short-period roughness unsteadiness [PDF]
E3S Web of Conferences, 2023 The effect of spatial inhomogeneity of sea waves on the accuracy of determining the level of the sea surface is studied. Based on the data of direct wave measurements, the variability of statistical characteristics of sea waves on scales smaller than the
Shumeyko Irina, Burdyugov Vyacheslav
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