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回波功率筛选与数字地表分类数据辅助的低空风切变风速估计方法

李海 宋迪 程伟杰 王杰

李海, 宋迪, 程伟杰, 王杰. 回波功率筛选与数字地表分类数据辅助的低空风切变风速估计方法[J]. 电子与信息学报, 2021, 43(8): 2286-2291. doi: 10.11999/JEIT190894
引用本文: 李海, 宋迪, 程伟杰, 王杰. 回波功率筛选与数字地表分类数据辅助的低空风切变风速估计方法[J]. 电子与信息学报, 2021, 43(8): 2286-2291. doi: 10.11999/JEIT190894
Hai LI, Di SONG, Weijie CHENG, Jie WANG. Echo Power Screening and Digital Land Classification Data-assisted Wind Speed Estimation of Low-altitude Wind-shear[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2286-2291. doi: 10.11999/JEIT190894
Citation: Hai LI, Di SONG, Weijie CHENG, Jie WANG. Echo Power Screening and Digital Land Classification Data-assisted Wind Speed Estimation of Low-altitude Wind-shear[J]. Journal of Electronics & Information Technology, 2021, 43(8): 2286-2291. doi: 10.11999/JEIT190894

回波功率筛选与数字地表分类数据辅助的低空风切变风速估计方法

doi: 10.11999/JEIT190894
基金项目: 民机项目(MJ-2018-S-28),天津市自然基金(20JCZDJC00490),航空基金项目(20182067008),中央高校基本科研业务费项目(3122018D008),中国民航大学蓝天教学名师培养经费
详细信息
    作者简介:

    李海:男,1976年生,教授,硕士生导师,研究方向为机载气象雷达信号处理、分布式目标检测与参数估计、动目标检测与参数估计等

    宋迪:男,1996年生,硕士生,研究方向为机载气象雷达信号处理

    程伟杰:男,1996年生,硕士生,研究方向为机载气象雷达信号处理

    王杰:男,1992年生,硕士生,研究方向为机载气象雷达信号处理

    通讯作者:

    李海 elisha1976@163.com

  • 中图分类号: TN959.4

Echo Power Screening and Digital Land Classification Data-assisted Wind Speed Estimation of Low-altitude Wind-shear

Funds: The Civil Aircraft Project (MJ-2018-S-28), The Key Project of Tianjin Natural Fund (20JCZDJC00490), The Aviation Foundation of China (20182067008), The Basic Scientific Research Project of Universities of The CPC Central Committee (3122018D008), The Training Funds for Famous Blue Sky Teachers of Civil Aviation University of China
  • 摘要: 针对非均匀杂波环境下,低空风切变风速估计不准的问题,该文提出一种回波功率筛选与数字地表分类数据(DLCD)辅助的低空风切变风速估计方法。该方法首先利用样本回波功率对训练样本进行初选,然后利用DLCD计算各样本间的相似度,并从功率较大的训练样本中选取样本相似度较高的训练样本估计待测距离单元的杂波协方差矩阵,最后利用广义相邻多波束(GMB)-局域联合处理(JDL)的方法实现低空风切变风速的有效估计。
  • 图  1  机载前视阵几何模型图

    图  2  GMB-JDL原理图

    图  3  DLCD辅助的低空风切变风速估计流程图

    图  4  雷达回波信号的空时2维谱

    图  5  特征谱对比图

    图  6  各距离单元的样本相似度

    图  7  风速估计结果对比图

    表  1  雷达与载机仿真参数设置

    参数名称数值参数名称数值
    飞行高度(m)600阵元数8
    载机速度(m/s)75采样周期数32
    雷达工作波长(m)0.05主瓣方向(°)(60, 0)
    脉冲重复周期(ms)0.143杂噪比(dB)40
    距离分辨率(m)150信噪比(dB)5
    下载: 导出CSV

    表  2  风速估计均方根误差

    风速估计方法均方根误差(m/s)
    均匀环境最优STAP1.8128
    均匀环境GMB-JDL2.0617
    非均匀环境最优STAP12.0579
    非均匀环境GMB-JDL8.6787
    非均匀环境样本挑选最优STAP24.4810
    本文所提方法6.0489
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-11-07
  • 修回日期:  2021-06-15
  • 网络出版日期:  2021-06-25
  • 刊出日期:  2021-08-10

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