Extension of nested arrays with the fourth-order difference co-array enhancement
作者： Qing Shen , Wei Liu , Wei Cui , Siliang Wu
DOI: 10.1109/ICASSP.2016.7472226
关键词:
摘要: To reach a higher number of degrees freedom by exploiting the fourth-order difference co-array concept, an effective structure extension based on two-level nested arrays is proposed. It increases consecutive lags in coarray, and virtual uniform linear array (ULA) with more sensors larger aperture then generated from proposed structure, leading to much distinguishable sources accuracy. Compressive sensing approach applied for direction-of-arrival (DOA) estimation vectorizing cumulant matrix array, assuming non-Gaussian impinging signals.
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