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Integrated clutter cancellation and high-resolution imaging of moving targets in Multi-channel SAR

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4 Author(s)
Diego Cristallini ; INFOCOM Dept., University of Rome ¿La Sapienza¿ Via Eudossiana, 18 - 00184, Italy ; Fabiola Colone ; Debora Pastina ; Pierfrancesco Lombardo

An integrated clutter cancellation and moving targets focusing scheme is presented for multichannel SAR (M-SAR) systems. The integration between the two processing steps is made feasible by performing the clutter cancellation processing in the Doppler frequency domain, and performing the moving target focusing by means of a bank of chirp scaling algorithms (CSA). The integration results efficient from a computational point of view, since the azimuth FFT is common to both the clutter cancellation and the focusing processing. The clutter cancellation step allows to achieve sub-clutter moving targets visibility. The bank of CSA filters, each one matched to a different along-track target velocity component allows to produce a high-resolution image of the target itself. The effectiveness of the proposed technique is shown with reference to a sample M-SAR dataset obtained from a SAREX-92 image.

Published in:

Radar Conference, 2009. EuRAD 2009. European

Date of Conference:

Sept. 30 2009-Oct. 2 2009