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一种有效的MIMO雷达相干信源波达方向估计方法 被引量：16

An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar
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摘要 提出了一种基于接收数据样本复用的MIMO雷达相干信源波达方向估计方法.算法利用MIMO雷达发射波形的分集以及MIMO雷达收、发阵列之间的对偶性,对MIMO雷达回波数据矩阵进行了样本复用以等效地增加样本数量,获得基于发射阵和基于接收阵的虚拟子阵接收信号.利用各个子阵之间的平移不变特性计算空间平滑之后的协方差矩阵,提高了相干信源波达方向估计的精度.计算机仿真验证了该方法的有效性. DOA estimation algorithm of coherent sources for MIMO radar is presented by applying the diversity of the transmitted waveform and the symmetry of the transmitting and receiving array.The receiving data samples are reused to increase the number of samples,and obtain the receiving signal of transmitting and receiving virtual sub-arrays.The covariance matrixes of the virtual sub-arrays are derived utilizing the smoothing invariability and the DOA estimation precision is improved.Numerical examples are simulated to verify the effectiveness of the algorithm.
作者 张娟 张林让 刘楠 徐青
机构地区 西安电子科技大学雷达信号处理国防科技重点实验室
出处 《电子学报》 EI CAS CSCD 北大核心 2011年第3期680-684,共5页 Acta Electronica Sinica
基金 高校基本科研业务费资助项目(K50510020024) 国家自然科学基金项目(61001213)
关键词 MIMO雷达 相干信源 空间平滑 波达方向估计 MIMO radar coherent sources spatial smoothing DOA estimation
分类号 TN957 [电子电信—信号与信息处理]
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参考文献9

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共引文献19

同被引文献141

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引证文献16

二级引证文献30

电子学报
2011年 第3期

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