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基于主奇异矢量的L型阵列相干信号二维DOA估计方法

唐晓杰 何明浩 冯明月 陈昌孝 韩俊

唐晓杰, 何明浩, 冯明月, 陈昌孝, 韩俊. 基于主奇异矢量的L型阵列相干信号二维DOA估计方法[J]. 电子与信息学报, 2020, 42(11): 2579-2586. doi: 10.11999/JEIT190455
引用本文: 唐晓杰, 何明浩, 冯明月, 陈昌孝, 韩俊. 基于主奇异矢量的L型阵列相干信号二维DOA估计方法[J]. 电子与信息学报, 2020, 42(11): 2579-2586. doi: 10.11999/JEIT190455
Xiaojie TANG, Minghao HE, Mingyue FENG, Changxiao CHEN, Jun HAN. Two-dimensional DOA Estimation Method for L-shaped Array of Coherent Signals Based on Main Singular Vector[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2579-2586. doi: 10.11999/JEIT190455
Citation: Xiaojie TANG, Minghao HE, Mingyue FENG, Changxiao CHEN, Jun HAN. Two-dimensional DOA Estimation Method for L-shaped Array of Coherent Signals Based on Main Singular Vector[J]. Journal of Electronics & Information Technology, 2020, 42(11): 2579-2586. doi: 10.11999/JEIT190455

基于主奇异矢量的L型阵列相干信号二维DOA估计方法

doi: 10.11999/JEIT190455
基金项目: 湖北省自然科学基金(2019CFB383)
详细信息
    作者简介:

    唐晓杰:男,1995年生,博士生,研究方向为信号与信息处理

    何明浩:男,1963年生,教授,研究方向为信号与信息处理

    冯明月:男,1988年生,讲师,研究方向为信号与信息处理

    陈昌孝:男,1982年生,讲师,研究方向为信号与信息处理

    韩俊:男,1983年生,讲师,研究方向为信号与信息处理

    通讯作者:

    唐晓杰 944717905@qq.com

  • 中图分类号: TN911.7

Two-dimensional DOA Estimation Method for L-shaped Array of Coherent Signals Based on Main Singular Vector

Funds: The Natural Science Foundation of Hubei Province (2019CFB383)
  • 摘要: 针对现有L型阵列相干信号DOA估计算法精度不高、孔径损失较大的问题,该文提出一种基于主奇异矢量的解相干(L-PUMA)方法以及改进的主奇异矢量法(L-MPUMA)。L-PUMA算法首先对互协方差矩阵进行降噪,再通过奇异值分解得到2维主奇异矢量,然后利用加权最小二乘法得到线性预测方程的多项式系数,该线性预测方程的根即为信号的DOA估计,最后提出一种新的配对算法实现仰角和方位角的配对。L-MPUMA算法利用反向共轭变换构造增广主奇异矢量,进一步提高了数据利用率,克服了信号完全相干时L-PUMA算法性能下降严重的问题,仿真实验验证了所提算法的高效性。
  • 图  1  L型阵列几何结构

    图  2  配对算法RMSE随SNR的变化

    图  3  配对成功率随角度间隔的变化

    图  4  RMSE随SNR的变化(部分相干)

    图  5  RMSE随SNR的变化(完全相干)

    图  6  RMSE随快拍数的变化(部分相干)

    图  7  RMSE随快拍数的变化(完全相干)

    图  8  目标的空间分布(1组相干信号)

    图  9  目标的空间分布(2组相干信号)

    图  10  目标的空间分布(3组相干信号)

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出版历程
  • 收稿日期:  2019-06-20
  • 修回日期:  2020-04-01
  • 网络出版日期:  2020-08-29
  • 刊出日期:  2020-11-16

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