Results 61 to 70 of about 81,814 (282)
Multibeam single frequency synthetic aperture radar processor for imaging separate range swaths [PDF]
, 1982 A single-frequency multibeam synthetic aperture radar for large swath imaging is disclosed. Each beam illuminates a separate ""footprint'' (i.e., range and azimuth interval).
Jain, A.
core +1 more source
Computer-Aided Civil and Infrastructure Engineering, EarlyView.Abstract Railway track transitions are prone to uneven settlements and track geometry degradation. Traditional monitoring methods are limited in coverage, which highlights the need for novel solutions. This study proposes a method that systematically integrates the high spatial resolution of Persistent Scatterer Interferometric Synthetic Aperture Radar
J. N. Varandas +4 more
wiley +1 more source
An Autofocus Technique for High-Resolution Inverse Synthetic Aperture Radar Imagery [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2014 For inverse synthetic aperture radar imagery, the inherent sparsity of the scatterers in the range-Doppler domain has been exploited to achieve a high-resolution range profile or Doppler spectrum. Prior to applying the sparse recovery technique, preprocessing procedures are performed for the minimization of the translational-motion-induced Doppler ...
Lifan Zhao, Lu Wang, G. Bi, Lei Yang
semanticscholar +5 more sources
3D inverse synthetic aperture radar image quality improvement using sparse signal representation
IET Radar, Sonar & Navigation, 2023 Generalisation of one‐dimensional dictionary learning (1DDL) algorithms to Multidimensional (MD) mode and its utilisation in MD data applications, increases the speed and reduces the computational complexity.
Ali Mehrpooya +4 more
doaj +1 more source
Pipelined digital SAR azimuth correlator using hybrid FFT-transversal filter [PDF]
, 1984 A synthetic aperture radar system (SAR) having a range correlator is provided with a hybrid azimuth correlator which utilizes a block-pipe-lined fast Fourier transform (FFT).
Liu, K. Y., Wu, C.
core +1 more source
Sparse signal representation for complex-valued imaging [PDF]
, 2009 We propose a sparse signal representation-based method for complex-valued imaging. Many coherent imaging systems such as synthetic aperture radar (SAR) have an inherent random phase, complex-valued nature.
Cetin, Mujdat +3 more
core +1 more source
Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 26, Page 4401-4424, 7 November 2025.Abstract Most post‐disaster damage classifiers perform best when destructive forces leave clear spectral or structural signatures. However, these signatures are often subtle or absent after inundation, where damage may be nonstructural and difficult to detect.
Yu‐Hsuan Ho, Ali Mostafavi
wiley +1 more source
A reweighted matrix completion algorithm for sparse inverse synthetic aperture radar imaging
IET Radar, Sonar & Navigation, 2023 Sparse inverse synthetic aperture radar (ISAR) imaging can be generally achieved by compressed sensing (CS) methods because sparse sampling disables the approach of conventional range Doppler. However, the CS‐based methods have to convert the matrix into
Mingjiu Lv +5 more
doaj +1 more source
Terrain analysis using radar shape-from-shading [PDF]
, 2003 This paper develops a maximum a posteriori (MAP) probability estimation framework for shape-from-shading (SFS) from synthetic aperture radar (SAR) images.
Bors, A G, Hancock, E R, Wilson, R C
core +3 more sources
Geodetic Insights to the Himalayan Megathrust Kinematics Unravel Increased Earthquake Hazard
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Measurements of both horizontal and vertical surface displacements allow for rigorous estimation of the moment deficit and the fault locking along subduction zones, including continental megathrusts. Previous measurements in the Himalayas were restricted to horizontal velocities from Global Navigational Satellite Systems, so the locking and ...
K. M. Sreejith +5 more
wiley +1 more source