Results 81 to 90 of about 18,185 (247)
Multiple feature-enhanced SAR imaging using sparsity in combined dictionaries [PDF]
, 2012 Nonquadratic regularization-based image formation is a recently proposed framework for feature-enhanced radar imaging. Specific image formation techniques in this framework have so far focused on enhancing one type of feature, such as strong point ...
Cetin, Mujdat +3 more
core +2 more sources
Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 18, Page 2695-2712, 18 July 2025.Abstract In structural health monitoring, only the deflection of key sections of the bridge can be monitored; the spatial continuous deflection of the main girder cannot be identified. To solve this problem, a method for expanding sparse point deflection measurements to spatially continuous data via optical fiber sensors in long‐span suspension bridges
Qianen Xu, Xinteng Ma, Yang Liu
wiley +1 more source
Sparse representation-based synthetic aperture radar imaging [PDF]
, 2011 There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying ...
Cetin, Mujdat +3 more
core +1 more source
Multiview ISAR Imaging for Complex Targets Based on Improved SBR Scattering Model
International Journal of Antennas and Propagation, 2021 A novel multiview inverse synthetic aperture radar (ISAR) imaging method is proposed to simulate high-resolution and identifiable ISAR image of complex targets by handling large-angle and wide-bandwidth scattering data.
Tiantian Feng, Lixin Guo
doaj +1 more source
Inferring Tectonic Plate Rotations From InSAR Time Series
Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Interferometric Synthetic Aperture Radar (InSAR) provides constraints on lithospheric kinematics at high spatial resolution. Interpreting InSAR‐derived deformation maps at continental scales is challenged by long‐wavelength correlated noise and the inherent limitation of measuring relative displacements within the data footprint.
Yuan‐Kai Liu +2 more
wiley +1 more source
Fast Compressed Sensing SAR Imaging based on Approximated Observation
, 2013 In recent years, compressed sensing (CS) has been applied in the field of synthetic aperture radar (SAR) imaging and shows great potential. The existing models are, however, based on application of the sensing matrix acquired by the exact observation ...
Fang, Jian +4 more
core +1 more source
Parameter selection in sparsity-driven SAR imaging [PDF]
, 2009 We consider a recently developed sparsity-driven synthetic aperture radar (SAR) imaging approach which can produce superresolution, feature-enhanced images.
Batu, Ozge +3 more
core +2 more sources
A Survey of Phase Shifters for Microwave Phased Array Systems
International Journal of Circuit Theory and Applications, Volume 53, Issue 6, Page 3719-3739, June 2025.ABSTRACT Phased Array Systems (PASs) are extensively used in radar and telecommunication systems for diverse applications, including military surveillance and wireless broadband communication. Besides, they are becoming increasingly indispensable in modern applications such as multi‐function phased array radars for weather monitoring and aircraft ...
M. Kebe, M. C. E. Yagoub, R. E. Amaya
wiley +1 more source
Autofocus approach for sparse aperture inverse synthetic aperture radar imaging
Electronics Letters, 2015 In the inverse synthetic aperture radar imaging, the autofocus is a required step for generating high‐quality images. However, due to many factors, the aperture data may be sparse so that the classical motion compensation approaches and imaging algorithms are not proper. On the basis of the compressed sensing technique and two optimisation methods (the
Jianjun Gao, Fulin Su, Da Xiao
openaire +2 more sources
Toward an optimal inversion method for synthetic aperture radar wind retrieval [PDF]
Journal of Geophysical Research: Oceans, 2002 In recent years, particular efforts have been made to derive wind fields over the oceans from synthetic aperture radar (SAR) images. In contrast with the scatterometer, the SAR has a higher spatial resolution and therefore has the potential to provide higher resolution wind information.
Portabella, M. +2 more
openaire +4 more sources