Results 81 to 90 of about 1,801,267 (226)

Advanced Unsupervised Classification Methods to Detect Anomalies on Earthen Levees Using Polarimetric SAR Imagery

Sensors, 2016
Fully polarimetric Synthetic Aperture Radar (polSAR) data analysis has wide applications for terrain and ground cover classification. The dynamics of surface and subsurface water events can lead to slope instability resulting in slough slides on earthen ...
Ramakalavathi Marapareddy, James V. Aanstoos, Nicolas H. Younan   +2 more
doaj   +1 more source

Textile Metamaterials: Design, Fabrication, and Emerging Applications

Applied Research, Volume 5, Issue 5, October 2026.
Textile metamaterials combine sub‐wavelength electromagnetic structures with textile architectures, enabling flexible and wearable platforms for wave manipulation. This review highlights their evolution, fabrication strategies, electromagnetic characteristics, and emerging applications, while identifying key challenges and opportunities for next ...
Samanta M. de Holanda, Arthur M. da Silva, Thiago F. Santos, Dieter Rahmadiawan, Francisco D. M. Nobre, Jose Heriberto Oliveira do Nascimento, Idalmir de Souza Queiroz Júnior, Antonio Sergio Bezerra Sombra, Humberto D. de Andrade   +8 more
wiley   +1 more source

Synthetic aperture radar remote sensing for landfill monitoring [PDF]

, 2007
Despite today’s intensive efforts directed at the recycling and recovery of solid wastes, the controlled disposal of refuse into land remains an important and necessary means of effective waste management.
Ottavianelli, Giuseppe
core   +4 more sources

Design of a millimetre Synthetic Aperture Radar (SAR) onboard UAV's

2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007
This paper describes the design for an experimental short-range (2 Km) high-resolution (30 x 30 cm²) synthetic aperture radar (SAR) sensor in the millimetre wave band to take it onboard unmanned aerial vehicles (UAV). The novelty lies on the establishment of new and very demanding requirements induced by the need of being onboard low cost aerial ...
Ruiz Saldaña, Raquel, Pérez Martínez, Félix   +1 more
openaire   +3 more sources

Tuvaijuittuq: The Last Refuge of Multiyear Ice (MYI) Is Becoming Increasingly Open

Journal of Geophysical Research: Oceans, Volume 131, Issue 10, October 2026.
Abstract Tuvaijuittuq is currently the largest in a series of Marine Protected Areas (MPAs) in the Canadian Arctic. The remoteness, inaccessibility and paucity of environmental data creates challenges in understanding and establishing conservation management strategies of this unique multiyear ice (MYI)‐dominated region.
M. Pućko, J. Larter, E. Kitching, L. C. Matthes   +3 more
wiley   +1 more source

Ultra Wide Swath Imaging With Multi-Channel SAR Systems [PDF]

, 2008
Multi-channel radar systems allow for overcoming the inherent limitation of conventional synthetic aperture radar (SAR). An example is the combination of digital beamforming on receive in elevation with multi-aperture SAR signal reconstruction in azimuth
Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Gebert, Nicolas, Krieger, Gerhard   +4 more
core  

Fine Imaging Method of THz-ViSAR on Subaperture Range Migration Algorithm and Distinctive-Point Map Drift Algorithm

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Video synthetic aperture radar (SAR) is a new type of synthetic aperture radar. In order to achieve high imaging frame rate, the data collected by video SAR is divided into multiple units for imaging.
Xiaofan Li, Bin Deng, Qiang Fu, Hongqiang Wang, Jun Yi   +4 more
doaj   +1 more source

Analysis of Security Imaging Method for Walking Human Screening With Single Channel Synthetic Aperture Radar

IEEE Access, 2019
In this paper, a security screening imaging method for walking human with single channel synthetic aperture radar (SAR) technology is proposed. According to the theory of SAR imaging, the imaging response for each single echo of the three dimensional (3D)
Shuliang Gui, Jin Li, Feng Zuo, Yiming Pi   +3 more
doaj   +1 more source

Downscaling of Tropical Cyclone Surface Wind Fields With a Hybrid Attention Transformer

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract This study employs a Hybrid Attention Transformer‐based super‐resolution model to reconstruct tropical cyclone (TC) surface wind fields. The model downscales coarse‐resolution ERA5 reanalysis data to high‐resolution HWind analyses (1998–2013), increasing the horizontal resolution by a factor of five.
Chunhua Wang, Dazhi Xi, Na He, Shuai Wang, Kekuan Chu   +4 more
wiley   +1 more source

Resolution Equation for SAR Systems Synthesizing Circular Aperture

IEEE Access
The resolution of a synthetic aperture radar (SAR) system depends not only on the operating frequency range of a radar but also on the geometry. A radar system operating at MHz frequencies facilitates SAR resolution to the meter (m) level with a linear ...
Viet T. Vu, Yevhen Ivanenko, Vanja Lindberg, Mats I. Pettersson   +3 more
doaj   +1 more source