Fast Factorized Back-Projection for Bistatic SAR Processing

Inhalt:
Time-domain back-projection is able to generate focused synthetic-aperture radar images for the most general geometries but at the expense of high computational burden. With the advent of the fast factorized back-projection algorithm, however, it is now possible to achieve computational performance in parity with frequency-domain algorithms and without the restrictions on data symmetry of the latter. In the paper, we show that the fast factorized back-projection algorithm can also be extended to bistatic SAR data with retained computational performance. Image results are presented based on bistatic VHF/UHF-band registrations acquired with the two airborne SAR sensors LORA and SETHI.