| 基于MIMO雷达虚拟阵列的二维波达方向估计算法 |
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| 引用本文： | 郭艺夺,张永顺,童宁宁,沈堤.基于MIMO雷达虚拟阵列的二维波达方向估计算法[J].雷达科学与技术,2011,9(3):237-242. |
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| 作者姓名： | 郭艺夺 张永顺 童宁宁 沈堤 |
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| 作者单位： | 空军工程大学导弹学院,陕西三原,713800 |
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| 基金项目： | 国家自然科学基金(No.60601016) |
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| 摘 要： | 基于L型配置MIMO雷达系统,提出了一种利用MIMO雷达单次回波的二维波达方向估计新算法。该算法通过单次回波信号形成的虚拟阵列数据来构造两个具有特定关系的矩阵,再用这两个矩阵构造一个波达方向矩阵,根据该矩阵的特征值和特征向量之间的关系,导出了目标方位角和高低角的闭式解。该算法不涉及二维谱峰搜索,计算量小,且不存在参数的配对问题;此外,当发射阵元数大于2时,其估计的最大目标数可大于或等于接收阵元数。计算机仿真结果证明了该算法的正确性和可行性。
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| 关 键 词： | MIMO雷达 二维波达方向估计 单次回波信号 虚拟阵列 波达方向矩阵法 |
An Algorithm of 2-D DOA Estimation Based on MIMO Radar Virtual Array |
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| GUO Yi-duo,ZHANG Yong-shun,TONG Ning-ning,SHEN Di.An Algorithm of 2-D DOA Estimation Based on MIMO Radar Virtual Array[J].Radar Science and Technology,2011,9(3):237-242. |
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| Authors: | GUO Yi-duo ZHANG Yong-shun TONG Ning-ning SHEN Di |
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| Affiliation: | GUO Yi-duo,ZHANG Yong-shun,TONG Ning-ning,SHEN Di(The Missile Institute,Air Force Engineering University,Sanyuan 713800,China) |
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| Abstract: | A novel algorithm of 2-D DOA(direction of arrival) estimation is proposed based on single echo signal of MIMO(multiple input multiple output) radar with L-shaped collocation.Two matrices with designated relationship are constructed by using the data of virtual arrays formed by single echo signal.And a DOA matrix is also constructed using the two matrices.Then the closed-form solution of the azimuth and elevation angle is derived according to the relationship of the eigenvalues and eigenvectors of the DOA ma... |
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| Keywords: | MIMO radar 2-D DOA estimation single echo signal virtual array DOA matrix method |
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