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Efficient detection and imaging of moving targets in SAR images based on chirp scaling

: Cristallini, D.; Pastina, D.; Colone, F.; Lombardo, P.


IEEE transactions on geoscience and remote sensing 51 (2013), Nr.4, S.2403-2416
ISSN: 0196-2892
ISSN: 0018-9413
Fraunhofer FHR ()

An innovative scheme is presented for moving target detection and high-resolution focusing that exploits a bank of chirp scaling algorithms (CSA), each one matched to a different along track target velocity component. The new scheme is thought for multichannel (MC) synthetic aperture radar systems, to provide a high-resolution focusing of the moving targets. Adequate target detection capability is ensured by integrating the aforementioned bank of CSA with a post-Doppler space-time adaptive processing clutter cancellation step. The presented scheme is very efficient from a computational point of view and is able to achieve sub-clutter visibility for the moving targets. The effectiveness of the proposed techniques is shown with reference to an emulated MC data set.