Computer Engineering and Applications ›› 2008, Vol. 44 ›› Issue (29): 57-60.DOI: 10.3778/j.issn.1002-8331.2008.29.015
• 理论研究 • Previous Articles Next Articles
WANG Jin,ZHAO Yong-jun,WANG Zhi-gang
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王 进,赵拥军,王志刚
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Abstract: Fast and accurate algorithms are important to the practical usage of wideband DOA estimation.A novel auto-focusing algorithm based on coherent signal-subspace method（CSM） is proposed.Signals are separated by means of subspace projection and the focusing matrices are updated in a fast way during process.While compared with the previous works，it is more robust to initial DOA estimation errors and needs no more SVD during updating.The experiment results show that it has better performance and less computation.
Key words: DOA estimation, wideband signal, coherent signal-subspace method, auto-focusing
摘要： 具有较高精度的宽带信号波达方向（DOA）快速估计算法是其实用化所要解决的重要问题。提出了一种新的相干子空间（CSM）类宽带DOA估计自聚焦算法。算法利用子空间投影变换将信号分离后分别处理，通过不断更新聚焦方向实现自聚焦。与已有算法相比，不受DOA初始值的影响，有更小的聚焦误差；不同目标在聚焦矩阵更新过程中无需再做奇异值分解，有较低的实时计算量。仿真实验表明，算法以较小的计算代价实现了近乎最优的聚焦性能，有较高的DOA估计精度。
关键词: 波达方向估计, 宽带信号, 相关子空间法, 自聚焦
WANG Jin,ZHAO Yong-jun,WANG Zhi-gang. Novel auto-focusing algorithm for wideband DOA estimation[J]. Computer Engineering and Applications, 2008, 44(29): 57-60.
王 进,赵拥军,王志刚. 一种新的宽带DOA估计自聚焦算法[J]. 计算机工程与应用, 2008, 44(29): 57-60.
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URL: http://cea.ceaj.org/EN/10.3778/j.issn.1002-8331.2008.29.015
http://cea.ceaj.org/EN/Y2008/V44/I29/57
