Results 91 to 100 of about 1,235,553 (221)
Polarimetric Change Detection for Wetlands [PDF]
, 2010 An exciting development in wetland mapping and monitoring is the use of SAR polarimetry which uses both magnitude and phase of the backscattered radar signal for information extraction.
Brisco, Brian +3 more
core
IET Image Processing, Volume 20, Issue 1, January/December 2026.Synthetic aperture radar (SAR) ship detection remains challenging due to inherent speckle noise, complex sea clutter, variable target scales, and arbitrary ship poses. This paper develops a YOLOv11‐based multi‐scale feature enhancement network, namely DWD‐Net, by integrating deformable convolution v4, a stochastic multi‐scale pooling attention ...
Niu Yameng +4 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.Moving targets often appear defocused and displaced in SAR imagery, complicating detection and recognition—especially when displaced into cluttered regions, where signal‐to‐background ratio is reduced. This work presents a multistatic SAR framework that extracts moving target signatures and reconstructs focused images, providing new insights into the ...
Francis Watson +2 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This work proposes a conditional diffusion model framework for high‐fidelity 3D reconstruction from sparse multibaseline circular synthetic aperture radar (CSAR) data, addressing challenges of low vertical resolution, geometric blur and artefacts. The method integrates a dual‐path 3D U‐Net with cross‐attention to fuse coarse reconstruction features ...
Xingyu Zhao +4 more
wiley +1 more source
Learning to Optimise FISTA‐PnP for Sparse Radar Imaging
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This work presents a plug‐and‐play (PnP) framework for sparse radar imaging that combines FISTA with reinforcement learning (RL)‐based parameter adaptation, achieving faster convergence and eliminating manual parameter tuning. Extensive experiments show the framework outperforms classical methods and recent optimisation networks, providing high‐quality
Yao Zhao +7 more
wiley +1 more source
Geosynchronous synthetic aperture radar: design and applications [PDF]
, 2009 Synthetic Aperture Radar (SAR) imaging from geosynchronous orbit has significant potential advantages over conventional low-Earth orbit (LEO) radars, but also challenges to overcome.
Bruno, Davide
core +2 more sources
Polarimetric SAR Target Scattering Interpretation in Rotation Domain: Theory and Application
Leida xuebao, 2017 Backscattering of radar targets is sensitive to the relative geometry between target orientations and the radar line of sight. This scattering diversity makes imaging radar represented by polarimetric Synthetic Aperture Radar (SAR) information processing
Chen Siwei +3 more
doaj +1 more source
Bi- and Multistatic SAR: Potentials and Challenges [PDF]
, 2004 Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas which are mounted on separate platforms. Such a spatial separation has several operational advantages which will increase the capability, reliability ...
Moreira, Alberto +2 more
core
Prototype Theory Based Feature Representation for PolSAR Images
Leida xuebao, 2016 This study presents a new feature representation approach for Polarimetric Synthetic Aperture Radar (PolSAR) image based on prototype theory. First, multiple prototype sets are generated using prototype theory.
Huang Xiaojing +3 more
doaj +1 more source
Journal of Remote SensingThe hybrid-polarimetric (HP) mode is an emerging synthetic aperture radar polarimetric mode that offers a wider swath and improved range ambiguity performance compared to the quadrature-polarimetric (QP) mode, with a slight loss of polarimetric ...
Lizhi Liu +11 more
doaj +1 more source