Azimuth cyclically interrupted Synthetic Aperture Radar (SAR) echo exists in regard of novel radar task or sensor geometries. To focusing interrupted SAR echo, a number of algorithms based on solution of ill-posed pro...
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Azimuth cyclically interrupted Synthetic Aperture Radar (SAR) echo exists in regard of novel radar task or sensor geometries. To focusing interrupted SAR echo, a number of algorithms based on solution of ill-posed pro...
ISBN:
(数字)9781837240982
Azimuth cyclically interrupted Synthetic Aperture Radar (SAR) echo exists in regard of novel radar task or sensor geometries. To focusing interrupted SAR echo, a number of algorithms based on solution of ill-posed problem are proposed. However, solving ill-posed problems usually consume large computing resource. In order to solve this issue, a novel fast method for focusing cyclically interrupted SAR echo is raised in this paper. The investigated method processes interrupted SAR echo by adding zeros operation, range migration based focusing, Point Spread Function (PSF) estimation and fast azimuth restoration via Richardson-Lucy deconvolution method. The proposed method can reduce illusory targets caused by azimuth interruption and operates much faster than method on basis of complex deconvolution via Complex Fast Iterative Shrinkage-Thresholding Algorithm (FISTA). Experimentations of simulation and veritable SAR data processing demonstrate the validity of the proposed method.
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