Results 31 to 40 of about 15,887 (242)
Region-enhanced passive radar imaging [PDF]
, 2005 The authors adapt and apply a recently-developed region-enhanced synthetic aperture radar (SAR) image reconstruction technique to the problem of passive radar imaging.
Cetin, Mujdat +2 more
core +1 more source
Low-rank sparse matrix decomposition for sparsity-driven SAR image reconstruction [PDF]
, 2015 We consider the development of a synthetic aperture radar (SAR) image reconstruction method that decomposes the imaged field into a sparse and a low-rank component.
Soğanlı, Abdurrahim, Çetin, Müjdat
core +2 more sources
Sparse SAR Imaging Method for Ground Moving Target via GMTSI-Net
Remote Sensing, 2022 Ground moving targets (GMT), due to the existence of velocity in range and azimuth direction, will lead to the deviation from their true position and defocus in the azimuth direction during the synthetic aperture radar (SAR) imaging process.
Luwei Chen +4 more
doaj +1 more source
Off-grid sparse SAR image reconstruction by EMMP algorithm [PDF]
2013 IEEE Radar Conference (RadarCon13), 2013 A new and robust sparse SAR image reconstruction technique is proposed for off-grid targets in the CS framework. In the proposed approach, basis vectors corresponding to on-grid point reflectors are perturbed on a finer grid to find the appropriate bases for the reconstruction of off-grid targets.
Gürbüz, A. Cafer +2 more
openaire +3 more sources
Autofocused Spotlight SAR Image Reconstruction of Off-Grid Sparse Scenes [PDF]
IEEE Transactions on Aerospace and Electronic Systems, 2017 Synthetic aperture radar (SAR) has significant role in remote sensing. Phase errors due to uncompensated platform motion, measurement model mismatch, and measurement noise can cause degradations in SAR image reconstruction. For efficient processing of the measurements, image plane is discretized and autofocusing algorithms on this discrete grid are ...
Sedat Camlica +2 more
openaire +5 more sources
A Compressive Sensing SAR Imaging Approach Based on Wavelet Package Algorithm
Leida xuebao, 2013 Compressive sensing SAR imaging can significantly reduce the sampling rate and the amount of data,but it is essential only in the case where the reflection coefficients of SAR scene are sparse. This paper proposed a compressive sensing SAR imaging method
Shi Yan, Chen Di-rong
doaj +1 more source
Multiple feature-enhanced synthetic aperture radar imaging [PDF]
, 2009 Non-quadratic 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 +1 more source
Forward-Looking MIMO-SAR for Enhanced Radar Imaging in Autonomous Mobile Robots
IEEE Access, 2023 Synthetic aperture radar (SAR) techniques are commonly used in spaceborne and airborne side-looking radar imaging applications, where the relatively high platform speeds enable the formation of very long synthetic apertures, which provide images with ...
Adnan Albaba +4 more
doaj +1 more source
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
Synthetic Aperture Imaging With Intensity-Only Data. [PDF]
, 2020 We consider imaging the reflectivity of scatterers from intensity-only data recorded by a single moving transducer that both emits and receives signals, forming a synthetic aperture.
Moscoso, Miguel +3 more
core +2 more sources