Results 71 to 80 of about 489,746 (209)
A Novel Point Target Attitude Compensation Method Using Electromagnetic Reflectance Theory
Remote Sensing, 2023 During the process of the airborne synthetic aperture radar (SAR) system platform in space, platform attitude deflection is inevitable. However, large attitude deflection angles are unacceptable for polarimetric calibration using point targets ...
Yonghui Han +4 more
doaj +1 more source
A calibration method for fully polarimetric microwave radiometers [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2003 A technique for absolute end-to-end calibration of a fully polarimetric microwave radiometer is presented. The technique is based on the tripolarimetric calibration technique of Gasiewski and Kunkee, but is extended to provide a means of calibrating all four Stokes parameters. The extension is facilitated using a biaxial phase-retarding microwave plate
Lahtinen, J.. +3 more
openaire +3 more sources
Earth 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
What SAR Labels Hide About a Changing Arctic
Earth'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
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.Abstract We developed an innovative balloon‐borne observation system based on China's BeiDou sounding platform that integrates a three‐axis electric field sensor for in‐cloud measurements of thunderstorm electrification. On 13 May 2025, this system was deployed during a severe convective storm over Beijing. In combination with multisource observations,
Ye Tian +10 more
wiley +1 more source
F-SAR – DLR’s New Multifrequency Polarimetric Airborne SAR [PDF]
, 2009 F-SAR identifies the successor of the well-known E-SAR system. The system is under development at the Microwaves and Radar Institute. The development was triggered by the demand for data being simultaneously acquired at different wavelengths and ...
Nottensteiner, Anton +4 more
core
Advanced Optical Materials, Volume 14, Issue 25, 3 July 2026.A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang +14 more
wiley +1 more source
National Materials, Volume 1, Issue 1, Page 48-71, July 2026.Circular differential scattering (CDS) spectroscopy relies on a modified dark‐field optical microscope to study single chiral nanostructures, avoiding the averaging effects of ensemble methods. Recently achieving improved detection limits of 1.5%, this robust technique analyzes plasmonic chirality and molecular interactions, with the future goal of ...
Hao Li +3 more
wiley +1 more source
Polarimetric characterisation of two layered frozen lakes [PDF]
, 2011 In terms of radar remote sensing, one of the challenges of future planetary SAR missions will be the estimation of surface, subsurface and upper layer geometric and dielectric characteristics that translate to the localization of subsurface ice and water
Papathanassiou, Kostas +1 more
core
Vadose Zone Journal, Volume 25, Issue 4, July/August 2026.Abstract National Oceanic and Atmospheric Administration–National Environmental Satellite, Data, and Information Service (NESDIS) developed the Soil Moisture Operational Product System (SMOPS) to serve as a one‐stop shop for all available microwave satellite soil moisture observations.
Jifu Yin +5 more
wiley +1 more source