The polar format algorithm (PFA) for synthetic aperture radar (SAR) image formation utilizes a first-order Taylor approximation of the differential range to improve computational efficiency, leading to image distortion and defocus. Limiting scene size by bounding the second-order Taylor series terms can restrict the impact of these errors, or alternatively, one may correct for these errors through spatially-variant filtering in post processing. In this letter we analyze the increase in allowable scene size that is realized through such processing.
Scene Size Bounds for PFA Imaging with Postfiltering
IEEE Transactions on Aerospace and Electronic Systems ; 49 , 2 ; 1402-1406
2013-04-01
11671360 byte
Article (Journal)
Electronic Resource
English
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