Efficient Fourier-based evaluation of SAR focusing kernels

Pau Prats-Iraola, Marc Rodriguez-Cassola, Francesco De Zan, Paco López-Dekker, Rolf Scheiber, Andreas Reigber

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


This contribution addresses the efficient evaluation of Fourier-based kernels for synthetic aperture radar (SAR) image formation. The goal is to evaluate the quality of the focused impulse response function and the residual phase errors of the kernel without having to implement the processor itself nor perform a costly point-target simulation followed by the processing. The proposed methodology is convenient for situations where the assumption of a hyperbolic range history does not hold anymore, and hence a compact analytic expression of the point target spectrum is not available. Examples where the hyperbolic range history does not apply include very high-resolution spaceborne SAR imaging or bistatic SAR imaging. The approach first computes numerically the two-dimensional (2D) spectrum of a point target and then uses the transfer function of the focusing kernel to match it, and hence obtain the impulse response function (IRF). The methodology is validated by comparing the matched IRFs with the ones obtained using point-target simulations.

Original languageEnglish
Title of host publicationProceedings of 10th European Conference on Synthetic Aperture Radar, EUSAR 2014
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Electronic)9783800736072
Publication statusPublished - 2014
Externally publishedYes
Event10th European Conference on Synthetic Aperture Radar - Berlin, Germany
Duration: 3 Jun 20145 Jun 2014
Conference number: 10


Conference10th European Conference on Synthetic Aperture Radar
Abbreviated titleEUSAR 2014


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