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非均匀噪声条件下的互质阵列欠定DOA估计方法

孙兵 阮怀林 吴晨曦 钟华 吴世龙

孙兵, 阮怀林, 吴晨曦, 钟华, 吴世龙. 非均匀噪声条件下的互质阵列欠定DOA估计方法[J]. 电子与信息学报. doi: 10.11999/JEIT210027
引用本文: 孙兵, 阮怀林, 吴晨曦, 钟华, 吴世龙. 非均匀噪声条件下的互质阵列欠定DOA估计方法[J]. 电子与信息学报. doi: 10.11999/JEIT210027
Bing SUN, Huailin RUAN, Chenxi WU, Hua ZHONG, Shilong WU. Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise[J]. Journal of Electronics and Information Technology. doi: 10.11999/JEIT210027
Citation: Bing SUN, Huailin RUAN, Chenxi WU, Hua ZHONG, Shilong WU. Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise[J]. Journal of Electronics and Information Technology. doi: 10.11999/JEIT210027

非均匀噪声条件下的互质阵列欠定DOA估计方法

doi: 10.11999/JEIT210027
基金项目: 国家自然科学基金(61171170),安徽省自然科学基金(1908085QF280)
详细信息
    作者简介:

    孙兵:男,1991年生,博士生,研究方向为空间信息处理、雷达及雷达对抗理论与技术

    阮怀林:男,1964年生,教授,博士生导师,研究方向为空间信息处理、雷达及雷达对抗理论与技术、压缩感知理论

    吴晨曦:男,1988年生,博士,讲师,研究方向为阵列信号处理、稀疏重构技术

    钟华:男,1991年生,博士生,研究方向为空间信息处理、定位理论与技术

    吴世龙:男,1978年生,副教授,主要研究方向为空间信息处理、定位理论与技术

    通讯作者:

    孙兵 sunbing137210@126.com

  • 中图分类号: TN911.23

Underdetermined Direction of Arrival Estimation for Coprime Array in the Presence of Nonuniform Noise

  • 摘要: 针对基于互质阵列的欠定DOA估计方法在非均匀噪声条件下性能下降的问题,该文提出一种基于协方差矩阵重构和矩阵填充的鲁棒DOA估计方法。首先,将接收数据协方差矩阵分解,得到包含非均匀噪声项的对角阵;然后,选取对角线元素中的最小值,替换其余对角线元素,进而得到重构后的数据协方差矩阵;最后,对重构后的协方差矩阵进行扩展和矩阵填充,结合子空间方法进行DOA估计。理论分析和仿真结果表明,相对于现有方法,本文方法有效的抑制了非均匀噪声的影响,有更好的DOA估计性能。
  • 图  1  互质阵列示意图

    图  2  幅相误差条件下的归一化空间谱

    图  3  均方根误差随信噪比变化

    图  4  均方根误差随快拍数变化

    图  5  分辨概率随信噪比变化

    图  6  分辨概率随角度间隔变化

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出版历程
  • 收稿日期:  2021-01-08
  • 修回日期:  2021-03-30
  • 网络出版日期:  2021-04-02

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