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基于时频域增强和全变差的群目标信号分离

李靖卿 冯存前 张栋 陈蓉

李靖卿, 冯存前, 张栋, 等 . 基于时频域增强和全变差的群目标信号分离[J]. 北京航空航天大学学报, 2016, 42(2): 375-382. doi: 10.13700/j.bh.1001-5965.2015.0110
引用本文: 李靖卿, 冯存前, 张栋, 等 . 基于时频域增强和全变差的群目标信号分离[J]. 北京航空航天大学学报, 2016, 42(2): 375-382. doi: 10.13700/j.bh.1001-5965.2015.0110
LI Jingqing, FENG Cunqian, ZHANG Dong, et al. Group-target signal separation based on time-frequency enhancement and total variation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 375-382. doi: 10.13700/j.bh.1001-5965.2015.0110(in Chinese)
Citation: LI Jingqing, FENG Cunqian, ZHANG Dong, et al. Group-target signal separation based on time-frequency enhancement and total variation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(2): 375-382. doi: 10.13700/j.bh.1001-5965.2015.0110(in Chinese)

基于时频域增强和全变差的群目标信号分离

doi: 10.13700/j.bh.1001-5965.2015.0110
基金项目: 国家自然科学基金(61372166,61501495);陕西省自然科学基金(2014JM8308)
详细信息
    作者简介:

    李靖卿 男,硕士研究生。主要研究方向:雷达信号处理、雷达电子战新技术。Tel.:029-84789420 E-mail:lijingqing_1025@126.com;冯存前 男,博士,教授,博士生导师。主要研究方向:雷达信号处理、雷达电子战新技术。Tel.:029-84789131 E-mail:fengcunqian@sina.com;张栋 男,博士研究生。主要研究方向:雷达信号处理、雷达电子战新技术。Tel.:029-84789420 E-mail:zhangdongtougao@163.com;陈蓉 女,硕士研究生。主要研究方向:雷达信号处理、雷达电子战新技术。Tel.:029-84789420 E-mail:chenr19920205@163.com

    通讯作者:

    冯存前,Tel.:029-84789131 E-mail:fengcunqian@sina.com

  • 中图分类号: TN957

Group-target signal separation based on time-frequency enhancement and total variation

  • 摘要: 针对低分辨雷达获取的群目标信号的弱时频正交性以及难以分离的问题,在进行时频域增强处理的基础上,提出了一种基于全变差(TV)的群目标信号分离方法。在旋转目标模型的基础上,首先通过分析群目标信号的稀疏性,指出了进行时频域增强处理的必要性。然后利用群目标中各子目标对应的微动周期的差异性,通过双向延迟处理,对多次观测得到的群目标信号进行时频域增强处理。最后根据群目标信号能量区域的分布特性,利用局部TV融合和主分量分析相结合的方法,实现了群目标信号的高保真分离。仿真结果表明,在采样率较低的情况下,文中方法有效地解决了群目标信号中弱信号分量的分离及提取问题,其融合分辨效果明显优于基于TV范数的融合方法。

     

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出版历程
  • 收稿日期:  2015-03-05
  • 刊出日期:  2016-02-20

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