Efficient ω-k-algorithm for circular SAR and cylindrical reconstruction areas

[摘要] We present a novel reconstruction algorithm of ω-k type which suitsfor wideband circular synthetic aperture data taken in stripmap mode. Theproposed algorithm allows to reconstruct an image on a cylindrical surface.The range trajectory is approximated by Taylor Series expansion using only thequadratic terms which limits the angular reconstruction range (cross range).In our case this is not a restriction for the application. Wider areas withrespect to cross range can be realized by joining several reconstructed imagesside by side to build a wider image by means of digital spotlighting.

[学科分类] 电子、光学、磁材料