| 色噪声下圆阵的相干源DOA估计快速算法 |
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| 引用本文： | 曾耀平.色噪声下圆阵的相干源DOA估计快速算法[J].西安邮电学院学报,2008,13(1):57-60. |
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| 作者姓名： | 曾耀平 |
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| 作者单位： | 西安邮电学院,通信工程系,陕西,西安,710121 |
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| 摘 要： | 提出了色噪声下基于圆阵的相干源快速算法。该方法首先利用模式转换技术将阵元空间内的均匀圆阵转换为模式空间的均匀线阵,再利用前后向平滑技术,对信源进行解相干,然后基于转换矩阵法,通过对阵列数据相关矩阵进行预处理,克服了色噪声对方位估计的影响,最后利用线性运算代替特征分解来得到噪声子空间,实现了子空间算法的快速估计。计算机仿真结果证实了该方法的正确性和有效性。
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| 关 键 词： | 色噪声 均匀圆阵 DOA估计 快速算法 |
| 文章编号： | 1007-3264（2008）01-0057-04 |
| 收稿时间： | 2007-07-06 |
| 修稿时间： | 2007年7月6日 |
Rapid DOA estimation for coherent signal with circular array in the presence of colored noise fields |
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| ZENG Yao-ping.Rapid DOA estimation for coherent signal with circular array in the presence of colored noise fields[J].Journal of Xi'an Institute of Posts and Telecommunications,2008,13(1):57-60. |
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| Authors: | ZENG Yao-ping |
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| Affiliation: | ZENG Yao-ping (Department of Communication Engine.ring, Xi＇an University of Post and Telecommunications, Xi＇an 710121, China) |
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| Abstract: | A rapid direction of arrival algorithm for coherent signal with uniform circular array(UCA) under the circumstance of colored noise is presented.The mode excitation is used to transform the manifold matrix of UCA into uniform linear array.Then the sources get uncorrelated through for-back spatial smoothing algorithm.A transform based covariance differencing approach is given,thus,overcoming the influence of colored noise.Finally using linear operation instead of eigendecomposition,the computational complexity can be reduced.The computer simulation confirms the validity and the accuracy of the algorithms. |
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| Keywords: | colored noise uniform circular array DOA estimation rapid algorithm |
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