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基于经验小波变换的目标加速度估计算法

陈浩 郭军海 齐巍

陈浩, 郭军海, 齐巍等 . 基于经验小波变换的目标加速度估计算法[J]. 北京航空航天大学学报, 2015, 41(1): 154-159. doi: 10.13700/j.bh.1001-5965.2014.0036
引用本文: 陈浩, 郭军海, 齐巍等 . 基于经验小波变换的目标加速度估计算法[J]. 北京航空航天大学学报, 2015, 41(1): 154-159. doi: 10.13700/j.bh.1001-5965.2014.0036
CHEN Hao, GUO Junhai, . Estimation of target's acceleration based on empirical wavelet transform[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 154-159. doi: 10.13700/j.bh.1001-5965.2014.0036(in Chinese)
Citation: CHEN Hao, GUO Junhai, . Estimation of target's acceleration based on empirical wavelet transform[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(1): 154-159. doi: 10.13700/j.bh.1001-5965.2014.0036(in Chinese)

基于经验小波变换的目标加速度估计算法

doi: 10.13700/j.bh.1001-5965.2014.0036
基金项目: 国家自然科学基金资助项目(61101070);总装备部预先研究资助项目
详细信息
    作者简介:

    陈浩(1989-),男,湖北黄冈人,硕士生,chinnyhaochen@126.com

    通讯作者:

    郭军海(1968-),男,湖北宜昌人,研究员,gjchy@aliyun.com,主要研究方向为外弹道测量数据处理方法研究、雷达信号处理.

  • 中图分类号: V557.3;TN911.7

Estimation of target's acceleration based on empirical wavelet transform

  • 摘要: 加速度会使目标回波信号的频谱展宽甚至偏移,使传统脉冲雷达测速方法不能准确估计信号的多普勒频率.为了克服目标的加速度对脉冲雷达测速的影响,提出了一种基于经验小波变换(EWT)的径向加速度估计算法.对回波信号进行EWT变换和能量型频率主成分提取方法得到回波信号瞬时频率,并利用抗差最小二乘拟合得到相位高阶系数,进而估计目标径向加速度.利用估计的加速度对信号频谱进行补偿就能准确估计信号的多普勒频率.仿真表明EWT方法是一种高精度快速算法,且估计误差最接近待估参数的C-R下界.实测高速飞行器脉冲雷达I/Q数据验证表明,EWT算法估计的加速度精度优于0.4 m/s2.该算法可应用于脉冲雷达实时加速度估计.

     

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出版历程
  • 收稿日期:  2014-01-15
  • 刊出日期:  2015-01-20

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