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As SAR technique is initially designed for imaging stationary ground scene, it is not optimum for detecting and imaging moving targets. To improve the performance, focusing of moving targets is required, but it often involves an exhaust searching of the unknown parameters which is of high computational cost. To solve the problem, in this work, an approximately optimum GMTI processing method for multichannel...
Sparsity-based STAP algorithms exploit the sparsity that the clutter spectrum only occupies a small number of spatio-temporal bins in the whole spatio-temporal plane, and provide an effective approach to suppress the clutter especially in very short snapshots. However, existing sparsity-based STAP algorithms either require high computational complexity, or have complex parameter settings, which results...
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