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https://doi.org/10.1109/lsp.2022.3151007
Copy DOIJournal: IEEE Signal Processing Letters | Publication Date: Jan 1, 2022 |
Citations: 4 |
In this work, we propose some novel coprime array configurations for real-valued sources, which will achieve more degrees-of-freedom (DOF) than the other existing coprime arrays when the array is moved only by half wavelength. We know that for real-valued sources, the properties of the difference and sum coarray (DSCA) of the synthetic array (SA) can be explored. The sensing environment is assumed to remain unchanged during the array motion. Here, we carry out a detailed analysis of the DSCA of SA of the proposed arrays. We also provide the mathematical expressions of the number of uniform and unique DOF. The optimization of each of the arrays is then carried out for a given number of sensors so that the DSCA of SA achieves the maximum uniform DOF. We perform all the required simulations to prove the superiority of the proposed coprime arrays.
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