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基于分数低阶矩的干涉阵列米波雷达稳健测高方法

陈根华 陈伯孝 秦永

陈根华, 陈伯孝, 秦永. 基于分数低阶矩的干涉阵列米波雷达稳健测高方法[J]. 电子与信息学报, 2021, 43(6): 1676-1682. doi: 10.11999/JEIT190946
引用本文: 陈根华, 陈伯孝, 秦永. 基于分数低阶矩的干涉阵列米波雷达稳健测高方法[J]. 电子与信息学报, 2021, 43(6): 1676-1682. doi: 10.11999/JEIT190946
Genhua CHEN, Baixiao CHEN, Yong QIN. Robust Height Finding Based on Fractional Lower Order Moments for An Interferometric Array Very High Frequency Radar[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1676-1682. doi: 10.11999/JEIT190946
Citation: Genhua CHEN, Baixiao CHEN, Yong QIN. Robust Height Finding Based on Fractional Lower Order Moments for An Interferometric Array Very High Frequency Radar[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1676-1682. doi: 10.11999/JEIT190946

基于分数低阶矩的干涉阵列米波雷达稳健测高方法

doi: 10.11999/JEIT190946
基金项目: 国家自然科学基金(61401187),江西省教育厅科学技术研究项目(GJJ170990)
详细信息
    作者简介:

    陈根华:男,1980年生,副教授,博士,研究方向为阵列雷达信号处理

    陈伯孝:男,1966年生,教授,博士生导师,研究方向为新体制雷达系统设计及其实现、雷达信号处理、目标精确制导与跟踪等

    秦永:男,1982年生,讲师,博士,研究方向为雷达目标跟踪

    通讯作者:

    陈根华 cghnit@126.com

  • 中图分类号: TN958

Robust Height Finding Based on Fractional Lower Order Moments for An Interferometric Array Very High Frequency Radar

Funds: The National Natural Science Foundation of China (61401187), The Science Research Project of Department of Education of Jiangxi Provincial (GJJ170990)
  • 摘要: 限制米波(VHF)雷达低角测高性能的关键因素是波束宽及复杂多径反射信号。该文提出倒T形干涉式阵列以扩展阵列孔径和增加阵列自由度(DOF),并提出基于分数低阶矩(FLOM)的干涉阵列米波雷达低角稳健测高算法。该算法针对复杂多径信号中非高斯分布的散射分量,从理论上证明分数阶协变矩阵(CM)仍保留阵列流形结构特征,并结合2维空间平滑技术实现分数阶协变矩阵的解相干,再由双尺度酉ESPRIT算法实现稳健低角测高。最后从理论上提出干涉阵列的3区基线设计法。实验结果验证干涉阵列与测高算法的有效性与正确性,说明干涉阵列提高了低角目标分辨性能,也说明了分数低阶矩增强了低角测高算法的稳健性,并验证3区基线设计法的理论正确性。
  • 图  1  干涉阵列米波雷达示意图

    图  2  分数阶协变矩阵特征值分布示意图

    图  3  不同分数低阶矩下干涉阵估计的精度

    图  4  平滑方向对估计性能影响

    图  5  不同SNR下分数阶$p$对测高性能的影响

    图  6  RMSE与$\varepsilon $$p$的关系图

    图  7  3区基线设计法

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出版历程
  • 收稿日期:  2019-11-27
  • 修回日期:  2021-02-23
  • 网络出版日期:  2021-03-12
  • 刊出日期:  2021-06-18

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