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Two-Dimensional Off-Grid DOA Estimation Using Unfolded Parallel Coprime Array
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DOI：10.1109/LCOMM.2018.2872955.png)
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摘要
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A two-dimensional (2-D) off-grid direction of arrival (DOA) estimation method using unfolded parallel coprime array (UPCA) is proposed. The proposed UPCA ensures large inter-element spacing, which is robust to the mutual coupling problem, and 2-D DOA estimation problem is transformed into one dimensional sparse representation (SR), which reduces the computation complexity. Besides, the off-grid DOA problem is taken into account and compensated through joint sparse recovery, which only requires a rough grid. Without the prior knowledge of source number, the proposed algorithm achieves improved DOA estimation results while requiring reduced computation complexity when compared to other SR-based methods. Simulation results verify the effectiveness of the algorithm.
Keyword:
Two dimensional off-grid DOA
unfolded parallel coprime array
mutual coupling
joint sparse recovery
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4.4
论文数:
1.3W
被引数:
2.2W
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