Point spread functions produced by three families of curvilinear apertures are derived and their characteristics evaluated for three-dimensional imaging. Outputs have been obtained for previously proposed speedups in the PML algorithm and consideration for further refinement introduced. Preliminary autofocus results making use of the stability afforded by the PML algorithm are presented.
"Progress in three-dimensional SAR from curvilinear apertures", Proc. SPIE 3462, Radar Processing, Technology, and Applications III, (14 October 1998); doi: 10.1117/12.326738; https://doi.org/10.1117/12.326738