This paper appears in:
Aerospace and Electronic Systems, IEEE Transactions on
Date of Publication:
Jan. 2005
Author(s):
Rigling, B.D.
Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA
Moses, R.L.
Volume: 41 , Issue: 1
Page(s):
60 - 64
Product Type:
Journals & Magazines
The polar format algorithm (PFA) for spotlight synthetic aperture radar (SAR) is based on a linear approximation for the differential range to a scatterer. We derive a second-order Taylor series approximation of the differential range. We provide a simple and concise derivation of both the far-field linear approximation of the differential range, which forms the basis of the PFA, and the corresponding approximation limits based on the second-order terms of the approximation.
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