基于相干积累矩阵重构的波达方向估计新方法

李磊 李国林 刘润杰

李磊, 李国林, 刘润杰. 基于相干积累矩阵重构的波达方向估计新方法[J]. 雷达学报, 2015, 4(2): 178-184. doi: 10.12000/JR14116
引用本文: 李磊, 李国林, 刘润杰. 基于相干积累矩阵重构的波达方向估计新方法[J]. 雷达学报, 2015, 4(2): 178-184. doi: 10.12000/JR14116
Li Lei, Li Guo-lin, Liu Run-jie. Novel Direction Of Arrival Estimation Method Based on Coherent Accumulation Matrix Reconstruction[J]. Journal of Radars, 2015, 4(2): 178-184. doi: 10.12000/JR14116
Citation: Li Lei, Li Guo-lin, Liu Run-jie. Novel Direction Of Arrival Estimation Method Based on Coherent Accumulation Matrix Reconstruction[J]. Journal of Radars, 2015, 4(2): 178-184. doi: 10.12000/JR14116

基于相干积累矩阵重构的波达方向估计新方法

DOI: 10.12000/JR14116
基金项目: 

国家自然科学基金(61102165)资助课题

详细信息
    作者简介:

    李磊(1987-),男,山东济宁人,海军航空工程学院在读博士生,研究方向为目标中近程探测、阵列信号处理等。E-mail:lilei19880229@gmail.com 李国林(1955-),男,吉林吉化人,博士生导师,主要研究方向为数字信号处理、近程目标探测、识别与干扰。 刘润杰(1987-),男,黑龙江大庆人,工程师,主要研究方向为雷达信号处理。

Novel Direction Of Arrival Estimation Method Based on Coherent Accumulation Matrix Reconstruction

  • 摘要: 针对短时小样本条件下相干信号的波达方向(Direction Of Arrival, DOA)估计问题,该文提出了一种基于相干积累矩阵重构的快速解相干方法。首先利用相干积累技术对阵列接收快拍进行处理,得到累积快拍矢量,提高了数据信噪比。再依据累积快拍矢量的结构特点构造一个非降维等效协方差矩阵,理论分析可知,该矩阵的秩仅与信源个数相等,与信号间相关性无关,即实现了相干信源完全解相干。相较于空间平滑类算法,该方法避免了阵列孔径损失,估计精度高、计算量小。仿真结果验证了算法的有效性。

     

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出版历程
  • 收稿日期:  2014-10-22
  • 修回日期:  2014-11-07
  • 网络出版日期:  2015-04-28

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