The polar format algorithm, while being more efficient than backprojection for synthetic aperture radar image formation, produces images with distortion and defocus. Since these errors are caused by uncompensated phase, a correction may be applied in postprocessing. Recent work utilizes a slow-time Taylor expansion of the differential range to derive the residual quadratic phase error for broadside linear flight paths. In this letter, we extend this approach to squinted linear flight paths and present new distortion and defocus corrections.
New Phase Error Corrections for PFA with Squinted SAR
IEEE Transactions on Aerospace and Electronic Systems ; 53 , 5 ; 2637-2641
2017-10-01
370904 byte
Article (Journal)
Electronic Resource
English
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