Results 21 to 30 of about 18,633 (206)
Leida xuebao, 2021 In the Inverse Synthetic Aperture Radar (ISAR) imaging system, when the terahertz radar transmits the wide bandwidth signal and vortex electromagnetic wave, Three-Dimensional (3D) high-resolution imaging can be achieved through information decoupling ...
Yanwen JIANG, Hongqi FAN, Shuangxun LI
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A sparsity-driven approach for joint SAR imaging and phase error correction [PDF]
, 2012 Image formation algorithms in a variety of applications have explicit or implicit dependence on a mathematical model of the observation process. Inaccuracies in the observation model may cause various degradations and artifacts in the reconstructed ...
Çetin, Müjdat, Önhon, Özben Naime
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Distributed MIMO-ISAR Sub-image Fusion Method
Leida xuebao, 2017 The fast fluctuation associated with maneuvering a target’s radar cross-section often affects the imaging performance stability of traditional monostatic Inverse Synthetic Aperture Radar (ISAR).
Gu Wenkun, Wang Dangwei, Ma Xiaoyan
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Inverse Synthetic Aperture Radar Imaging: A Historical Perspective and State-of-the-Art Survey
IEEE Access, 2021 Radar can obtain high spatial resolution at large operating distances, and its operation is largely independent from weather and lighting conditions. This makes it an important instrument in an ever-increasing number of applications requiring robust and ...
Risto Vehmas, Nadav Neuberger
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Inversion Of Synthetic Aperture Radar Data For Surface Scattering [PDF]
10th Annual International Symposium on Geoscience and Remote Sensing, 1992 SUMMARY The conventional image-formation technique of high-resolution SAR synthetic aperture radar (SAR) data has utilized correlation in the range-Doppler domain. An alternative, more recent approach, in the SAR image-formation algorithm exploits downward extrapolation of the wavefield in the f-k domain to perform not only azimuth compression but ...
J. S. Won, W. M. Moon
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Multipath Smearing Suppression for Synthetic Aperture Radar Images of Harbor Scenes
IEEE Access, 2019 Due to the periodic and non-periodic variations in the sea surface, smearing is caused by the multiple paths between the sea surface and man-made objects in synthetic aperture radar images of harbor areas. This smearing can cover real targets and lead to
Peng Xiao, Xiaolu Tian, Min Liu, Wei Liu
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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
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Parametric Sparse Representation and Its Applications to Radar Sensing
Leida xuebao, 2016 Sparse signal processing has been utilized to the area of radar sensing. Due to the presence of unknown factors such as the motion of the targets of interest and the error of the radar trajectory, a predesigned dictionary cannot provide the optimally ...
Li Gang, Xia Xiang-Gen
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Ship Target Imaging in Airborne SAR System Based on Automatic Image Segmentation and ISAR Technique
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 The airborne synthetic aperture radar (SAR) image of ship target will be blurred for the complex motion of the target, which will influence the performance of feature extraction and target classification.
Rui Cao, Yong Wang, Bin Zhao, Xiaofei Lu
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Analytic inversion in synthetic aperture radar. [PDF]
Proceedings of the National Academy of Sciences, 1994 A method of processing synthetic aperture radar signals that avoids some of the approximations currently in use that appear to be responsible for severe phase distortions is described. As a practical matter, this method requires N3 numerical operations, as opposed to the N2 ln N currently the case, but N3 is now easily managed, for N in the range of ...
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