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• W2891648382 abstract "Coprime arrays are capable of achieving an increased number of degrees-of-freedom by operating the coarray signals. However, their non-uniform coarrays prevent the full utilization of the available signals. To address this problem, a novel coarray interpolation-based direction-of-arrival (DOA) estimation algorithm via covariance matrix reconstruction is proposed in this paper. In particular, we formulate a gridless optimization problem to reconstruct the covariance matrix of the interpolated coarray, such that all the coarray observations are fully utilized. We also investigate the rotational invariance in the coarray domain to retrieve the DOAs. Neither spatial sampling nor spectrum searching is required in the proposed algorithm, indicating the capability of resolving off-grid DOAs. Simulation results demonstrate the effectiveness of the proposed DOA estimation algorithm." @default.
• W2891648382 created "2018-09-27" @default.
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• W2891648382 date "2018-04-01" @default.
• W2891648382 modified "2023-09-26" @default.
• W2891648382 title "Coarray Interpolation-Based Coprime Array Doa Estimation Via Covariance Matrix Reconstruction" @default.
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• W2891648382 doi "https://doi.org/10.1109/icassp.2018.8461721" @default.
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