| 基于正交性检测的宽带DOA快速估计算法 |
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| 引用本文： | 曹金亮,刘志文,徐友根.基于正交性检测的宽带DOA快速估计算法[J].北京理工大学学报,2008,28(1):75-77. |
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| 作者姓名： | 曹金亮 刘志文 徐友根 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 摘 要： | 基于子空间的正交特性,给出了一种宽带信号波达方向(DOA)快速估计算法.应用正交性检测获得方向估计,无需预处理,成功避免了预处理误差给估计结果带来的影响;通过频谱分析只选取能量集中的少数窄带频段数据进行角度估计,大大降低了奇异值分解的矩阵规模,可做到快速实时;在对信号能量比较充分利用的同时也保证了算法的高分辨率.计算机仿真验证了该算法的有效性和快速性.该算法可以应用于任意阵列.
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| 关 键 词： | 波达方向估计 信号子空间方法 宽带信号源 阵列信号处理 |
| 文章编号： | 1001-0645（2008）01-0075-03 |
| 收稿时间： | 2007-07-04 |
| 修稿时间： | 2007年7月4日 |
Fast Algorithm for Wideband Direction of Arrival Estimation Based on Orthogonality Testing |
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| CAO Jin-liang,LIU Zhi-wen and XU You-gen.Fast Algorithm for Wideband Direction of Arrival Estimation Based on Orthogonality Testing[J].Journal of Beijing Institute of Technology(Natural Science Edition),2008,28(1):75-77. |
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| Authors: | CAO Jin-liang LIU Zhi-wen and XU You-gen |
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| Institution: | Department of Automatic Control; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China;Department of Automatic Control; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China;Department of Automatic Control; School of Information Science and Technology; Beijing Institute of Technology; Beijing 100081; China |
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| Abstract: | Based on the orthogonality of the subspace,a fast algorithm for wideband direction-of-arrival(DOA) estimation is proposed.It estimates the DOAs by testing the orthogonality and does not require any preprocessing for initial values.Only a few frequency components having high SNR of the sources are chosen for processing,the computational complexity is effectively reduced.Meanwhile,the fast algorithm has a high resolution and can be used with an arbitrary array.Computer simulations demonstrate the efficacy of the proposed algorithm. |
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| Keywords: | direction-of-arrival(DOA) estimation signal subspace method wideband sources array signal processing |
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