The Polar Format Imaging Algorithm for Forward-looking Bistatic SAR

Conference: EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
06/02/2008 - 06/05/2008 at Friedrichshafen, Germany

Proceedings: EUSAR 2008

Pages: 4Language: englishTyp: PDF

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SUN , Jin-ping; Lv, Yan; MAO, Shi-yia (Research Group 203, Dept. E.E., Beijing Univ. of Aero. & Astro., BeiJing 100083, China)
HONG, Wen (Nat. Key Lab of MW Imaging Tech., Institute of Electronics, CAS, BeiJing 100080, China)

A new effective PFA (Polar Format Algorithm) imaging algorithm for forward looking bistatic SAR is presented in this paper, Non-linear interpolation and sampling are adopted during converting polar coordinate to Cartesian coordinate according to the characteristics of space frequency samples in raw data domain. The algorithm preserves the character of conventional PFA of separating 2D interpolation to two 1D interpolations. The processing flow, efficiency and performance of the new algorithm are as same as conventional PFA for mono-static spotlight SAR. The limited conditions to realize forward looking bistatic SAR are also discussed and the algorithm is validated through point target simulations.