An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar

ZHANG Juan; ZHANG Lin-rang; LIU Nan; XU Qing

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An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar

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- An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar
- Acta Electronica Sinica Vol. 39, Issue 3, Pages: 680-684(2011)
- 作者机构：
  
  西安电子科技大学雷达信号处理国防科技重点实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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ZHANG Juan, ZHANG Lin-rang, LIU Nan, et al. An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar[J]. Acta Electronica Sinica, 2011, 39(3): 680-684.
DOI：

ZHANG Juan, ZHANG Lin-rang, LIU Nan, et al. An Efficient DOA Estimation Algorithm of Coherent Sources for MIMO Radar[J]. Acta Electronica Sinica, 2011, 39(3): 680-684. DOI：

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.

Abstract

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.

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