| 基于遗传算法的宽带目标波束空间DOA估计 |
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| 引用本文： | 金勇,程云志,周柯. 基于遗传算法的宽带目标波束空间DOA估计[J]. 传感器与微系统, 2008, 27(7) |
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| 作者姓名： | 金勇 程云志 周柯 |
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| 作者单位： | 河南大学先进控制与智能信息研究所,河南,开封,475004 |
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| 摘 要： | 提出一种基于遗传算法的宽带目标到达方位(DOA)估计新方法,该方法首先通过傅立叶变换方法设计频域恒定束宽转换矩阵,并使用该矩阵将阵元空间的数据转换到波束空间,同时,利用宽带波束空间遗传算法进行DOA估计。计算机仿真表明:在低信噪比条件下该算法相比于CSS类子空间算法、CSS类最大似然算法和阵元空间遗传算法有更高的分辨概率,更小的均方误差。
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| 关 键 词： | 到达方位 波束空间遗传算法 宽带目标 |
Wideband targets beam-space DOA estimation based on genetic algorithm |
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| JIN Yong,CHENG Yun-zhi,ZHOU Ke. Wideband targets beam-space DOA estimation based on genetic algorithm[J]. Transducer and Microsystem Technology, 2008, 27(7) |
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| Authors: | JIN Yong CHENG Yun-zhi ZHOU Ke |
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| Abstract: | A new wideband beam-space DOA estimation approach based on genetic algorithm is proposed.Frequency invariant beamformer transform matrix is designed by using fast Fourier transform.Array data is transformed to beam-space using this matrix.The beam-space genetic algorithm is applied in beam-space to estimate DOA of wideband signals.The simulations show that beam-space genetic algorithm has higher resolution,smaller mean square error better than sub-space algorithm,maximum likelihood algorithm and array genetic algorithm in low SNR ranges. |
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| Keywords: | direction of arrival(DOA) beam-space genetic algorithm wideband targets |
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