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Optimal Beamforming for Range-Doppler Ambiguity Minimization in Squinted SAR

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3 Author(s)
Di Lorenzo, P. ; Univ. of Rome, La Sapienza, Italy ; Barbarossa, S. ; Borgarelli, L.

A method is proposed to optimize the radiation pattern of a planar array in order to maximize the signal-to-ambiguity-ratio for a squinted synthetic aperture radar (SAR) observation geometry. The optimal beamformer is the generalized eigenvector associated with a pair of matrices that depends on observation geometry and the Earth reflectivity model. The proposed approach is valid for any array configuration. This enables adaptivity to surface background and T/R module failures, thus increasing system robustness.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:49 ,  Issue: 1 )