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This work presents and analyzes a method for reducing the computational complexity of the Back-Projection image reconstruction algorithm in the framework of forward-looking multiple-input multiple-output synthetic aperture radar. A combination of the decimated Back-Projection and the Sequential Spatial Masking algorithms is proposed. Simulation results show that the proposed approach manages to significantly reduce the complexity of the Back-Projection without sacrificing the resolution or the field of view.
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Albaba et al. (2025) studied this question.
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