An Accelerate FFBP Algorithm of Bistatic Forward-Looking SAR Based On Azimuth Equidistant Coordinates

Abstract

FFBP (fast factorized back projection) algorithm is a time-domain algorithm of SAR imaging. Subimages of FFBP are built in local elliptic polar coordinates. In this paper, we introduces an accelerate FFBP algorithm. Subimages of this algorithm are based on azimuth equidistant coordinates. The operation time of this method is shorter than that of FFBP.