Iterative image formation using fast (Re/Back)-projection for spotlight-mode SAR

Abstract : Iterative SAR image formation can visually improve image reconstructions from under-sampled phase histories by approximately solving a regularised least squares problem. For iterative inversion to be computationally feasible, fast algorithms for the observation matrix and its adjoint must be available. We demonstrate how fast, N2 log2 N complexity, (re/back) projection algorithms can be used as accurate approximations for the observation matrix and its adjoint, without the limiting assumptions of other N2 log2 N methods, e.g. the polar format algorithm. Experimental results demonstrate the effectiveness of iterative methods using a publicly available SAR dataset. Matlab/C code implementations of the fast (re/back)-projection algorithms used in this paper have been made available.
Type de document :
Communication dans un congrès
Radar Conference (RADAR), 2011 IEEE, May 2011, kansas city, United States. pp.835 -840, 2011, 〈10.1109/RADAR.2011.5960654〉
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https://hal.inria.fr/hal-00700226
Contributeur : Jules Espiau de Lamaestre <>
Soumis le : mardi 22 mai 2012 - 15:11:08
Dernière modification le : jeudi 26 octobre 2017 - 16:34:02

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S.I. Kelly, Gabriel Rilling, Mike Davies, Bernard Mulgrew. Iterative image formation using fast (Re/Back)-projection for spotlight-mode SAR. Radar Conference (RADAR), 2011 IEEE, May 2011, kansas city, United States. pp.835 -840, 2011, 〈10.1109/RADAR.2011.5960654〉. 〈hal-00700226〉

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