| 基于空间平滑技术的高阶累积量空间谱估计 |
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| 引用本文： | 雷开洪.基于空间平滑技术的高阶累积量空间谱估计[J].科技通报,2012,28(8):50-52. |
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| 作者姓名： | 雷开洪 |
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| 作者单位： | 中国民航飞行学院,四川广汉,618307 |
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| 基金项目： | 中国民航飞行学院科研基金 |
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| 摘 要： | 提出基于空间平滑技术的高阶累积量空间谱估计。在经典的空间谱估计中,均利用信号的二阶统计量,并且假设噪声是白噪声。在实际应用场合,噪声通常是色噪声,这时采用高阶统计量可以获得比二阶矩更理想的性能。本文利用空间平滑技术对单一的高阶累积量算法进行改进。新算法具有同时测向能力、测向精度高、超分辨能力,能在低信噪比环境中取得好的性能。计算机仿真证明了该方法的有效性。
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| 关 键 词： | 高阶累积量 DOA 空间平滑技术 |
Study on DOA Estimation Based on Spatial Smoothing Algorithm |
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| LEI Kaihong.Study on DOA Estimation Based on Spatial Smoothing Algorithm[J].Bulletin of Science and Technology,2012,28(8):50-52. |
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| Authors: | LEI Kaihong |
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| Institution: | LEI Kaihong(China Civil Aviation Flight School,Guanghan 618307,China) |
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| Abstract: | A practical realization of spatial smoothing algorithm is proposed.Spatial spectrum estimation is an important area in array signal processing,But Spatial spectrum estimation is all most based on the hypothesis: The noise is the white-nosie.But In practical applications,noise is often colore-noise.The spatial smoothing algorithm are jointly to DOA,through Processing high-order cumulant by the techique of spatial smoothing algorithm,DOA estimation performance can be improved a lot in low.The simulation results show that the algorithm is effective. |
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| Keywords: | higher order statistics DOA spatial smoothing algorithm |
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