In this paper, a new signal processing framework is proposed, in which the array time samples are represented in DOA-frequency domain through a single stage problem. It is shown that concatenated array data is well represented in a G dictionary atoms space, where G columns correspond to pixels in the DOA-frequency image. We present two approaches for the G formation and compare the benefits and disadvantages of them. A mutual coherence guaranteed G manipulation technique is also proposed. Furthermore, unlike …
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