Results 61 to 70 of about 630,501 (231)

Doppler polarimetric ground clutter identification and suppression for atmospheric radars based on co-polar correlation

open access: yesJournal of Telecommunications and Information Technology, 2001
A new clutter suppression technique that uses both Doppler and polarimetric information is presented. Polarimetric properties of the target and clutter are calculated per Doppler frequency cell and based on this information clutter suppression is ...
Dmitri Moisseev   +3 more
doaj   +1 more source

Polarimetric radar modified

open access: yesEos, Transactions American Geophysical Union, 1990
Modification of 11‐cm Doppler radar, to permit measurement of the complete polari‐metric matrix of signals backscattered from meteorological media, was recently completed by the Ground Based Remote Sensing Branch of the Geophysics Laboratory, U.S. Air Force Base, Hanscom, Mass. It is believed that this radar is the only meteorological research radar in
openaire   +1 more source

Design, Synthesis, and Biological Evaluation of Chiral Urea and Thiourea Derivatives as Multitarget‐Directed Anti‐Alzheimer Agents

open access: yesDrug Development Research, Volume 87, Issue 5, August 2026.
ABSTRACT A series of novel chiral urea and thiourea compounds were designed as multitarget‐directed ligands for Alzheimer's disease and evaluated against hAChE, hBChE, and hMAO‐B, with exploratory assessment of HSD10. These chiral compounds were synthesized and fully characterized, and their enantiopurity was confirmed via HPLC.
Sule Erol Gunal   +10 more
wiley   +1 more source

The Ceiling Height of Wildland Fire Plumes in Quasi‐Steady Stratified and Sheared Boundary Layers

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Radar observations from a prescribed fire experiment reveal a large‐scale, billow‐like vorticity structure associated with the plume head near the onset of plume bending. This bending limits the vertical extent of the plume and defines the characteristic plume ceiling height.
Jie Sun   +4 more
wiley   +1 more source

Bird Migration Echoes Observed by Polarimetric Radar [PDF]

open access: yes, 2008
A C-band polarimetric radar on Okinawa Island successfully observed large-scale bird migrations over the western Pacific Ocean. The birds generated interesting polarimetric signatures.
FURUZAWA, Fumie A.   +3 more
core  

Robust Regional Contrast but Penetration‐Sensitive Snow Thickness Over Sea Ice From Multi‐Winter Antarctic CRYO2ICE Observations

open access: yesEarth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Snow on Antarctic sea ice modulates albedo, thermodynamic growth, and snow–ice formation, yet remains a leading uncertainty in altimetry‐derived sea‐ice thickness. Here we use the post‐2022 CRYO2ICE configuration to derive along‐track winter snow thickness from ICESat‐2 laser and CryoSat‐2 Ku‐band radar freeboards over the Weddell and Ross ...
Xinlong Liu   +4 more
wiley   +1 more source

Forest anisotropy assessment by means of spatial variations analysis of PolSAR backscattering [PDF]

open access: yesСибирский лесной журнал, 2017
The possibility to synthesize polarization response from earth covers at any desired combination of transmit and receive antenna polarizations is the significant advantage of polarimetric radar.
A. V. Dmitriev   +2 more
doaj   +1 more source

What SAR Labels Hide About a Changing Arctic

open access: yesEarth's Future, Volume 14, Issue 8, August 2026.
Abstract Synthetic aperture radar (SAR) has been the backbone of Arctic sea ice monitoring since the 1990s, yet nearly every operational product that assigns an ice class or geophysical state (melt onset dates, freeze‐up timing, ice‐type classifications) is derived by compressing continuous radar backscatter into discrete categorical labels.
M. Mahmud
wiley   +1 more source

Investigations on the Polarimetric Behavior of a Target Near the Soil [PDF]

open access: yes, 2006
The polarimetric behavior of the diffracted field from an object located close to the ground is investigated for a varying incidence angle. Here, the field is described by the geometrical theory of diffraction in accordance to its asymptotic formulas. As
Molinet, Frédéric   +3 more
core   +1 more source

Dual-polarization radar rainfall estimation in Korea according to raindrop shapes obtained by using a 2-D video disdrometer [PDF]

open access: yesAtmospheric Measurement Techniques, 2016
Polarimetric measurements are sensitive to the sizes, concentrations, orientations, and shapes of raindrops. Thus, rainfall rates calculated from polarimetric radar are influenced by the raindrop shapes and canting.
H.-L. Kim   +4 more
doaj   +1 more source

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