本文選題：陣列信號 + 波達方向��； 參考：《計算機應(yīng)用研究》2014年12期

【摘要】：稀疏表示DOA估計算法具有很高的分辨率,但是其計算量較大。為此,提出一種基于預(yù)估計的稀疏表示DOA估計快速算法。首先,利用陣列協(xié)方差矩陣特征向量的性質(zhì),通過DFT對入射信號進行DOA預(yù)估計;其次,利用預(yù)估計結(jié)果降低過完備字典的長度;最后,進行稀疏分解得到DOA估計的精確結(jié)果。由于采用的字典長度較短,該算法的計算量非常小。仿真實驗結(jié)果表明,該算法具有較高的成功概率、較快的估計速度和較低的估計誤差。因此,提出的算法在工程實際中應(yīng)用前景廣闊。
[Abstract]:The sparse representation DOA estimation algorithm has a high resolution, but its computational complexity is large. For this reason, a fast algorithm based on pre estimation sparse representation for DOA estimation is proposed. First, the DOA preestimation is carried out on the incident signal through the DFT of the eigenvector of the array covariance matrix. Secondly, the preestimation results are used to reduce the overcomplete dictionary. In the end, the precise results of DOA estimation are obtained by sparse decomposition. Because of short dictionary length, the computational complexity of the algorithm is very small. The simulation experiment results show that the algorithm has high probability of success, faster estimation speed and lower estimation error. Therefore, the proposed algorithm has a broad application prospect in engineering practice.
【作者單位】： 電子工程學(xué)院通信對抗系;
【基金】：國家自然科學(xué)基金資助項目(61171170)
【分類號】：TN911.23

【參考文獻】

相關(guān)期刊論文 前2條

1 李鵬飛;張e，

本文編號：1947812