| 空间非平稳噪声环境下非均匀线阵的DOA估计 |
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| 引用本文： | 曾耀平,严胜刚,王惠刚.空间非平稳噪声环境下非均匀线阵的DOA估计[J].计算机仿真,2006,23(4):88-89,127. |
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| 作者姓名： | 曾耀平 严胜刚 王惠刚 |
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| 作者单位： | 西北工业大学航海学院,陕西,西安,710072;西北工业大学航海学院,陕西,西安,710072;西北工业大学航海学院,陕西,西安,710072 |
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| 摘 要： | 针对在空间非平稳噪声环境下传统的MUSIC算法会失效的问题，提出了一种新的波达方向（DOA）估计方法。该方法利用转换矩阵法，通过对阵列数据相关矩阵进行预处理，从而克服噪声对方位估计的影响，并且该算法适用于非均匀线阵，而非均匀线阵在阵元数目一定的情况下，通过合理设置阵元间距。其方位分辨率较之均匀线阵有较大的提高。计算机仿真结果表明，在非平稳噪声环境下利用该算法非均匀线阵的分辨能力要明显高于均匀线阵。
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| 关 键 词： | 阵列信号处理 非平稳噪声 非均匀线阵 波达方向估计 |
| 文章编号： | 1006-9348（2006）04-0088-02 |
| 收稿时间： | 2005-02-01 |
| 修稿时间： | 2005-02-01 |
DOA Estimation with Spatially Nonstationary Noise for Nonuniform Linear Array |
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| ZENG Yao-ping,YAN Sheng-gang,WANG Hui-gang.DOA Estimation with Spatially Nonstationary Noise for Nonuniform Linear Array[J].Computer Simulation,2006,23(4):88-89,127. |
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| Authors: | ZENG Yao-ping YAN Sheng-gang WANG Hui-gang |
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| Abstract: | A novel method for estimating signal directions under the circumstance of spatially nonstationary noise is presented in order to overcome the defect of traditionary MUSIC arithmetic. A transform based covariance differencing approach is given ,thus,overcoming the influence of noise. This new arithmetic is the same with nonuniform linear array, and nonuniform linear array has a better resolution than uniform linear array by intercalating the space between the sensor under the circumstance of defined sensor. The computer simulation results show that the proposed algorithm has expected performance for nonuniform linear array. |
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| Keywords: | Array signal processing Nonstationary noise Nonuniform linear array Estimate direction of arrival |
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