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时变环境下RCS测量中的精确背景抵消处理技术

原赛赛 梁丽雅 许小剑

原赛赛, 梁丽雅, 许小剑等 . 时变环境下RCS测量中的精确背景抵消处理技术[J]. 北京航空航天大学学报, 2018, 44(10): 2193-2199. doi: 10.13700/j.bh.1001-5965.2018.0019
引用本文: 原赛赛, 梁丽雅, 许小剑等 . 时变环境下RCS测量中的精确背景抵消处理技术[J]. 北京航空航天大学学报, 2018, 44(10): 2193-2199. doi: 10.13700/j.bh.1001-5965.2018.0019
YUAN Saisai, LIANG Liya, XU Xiaojianet al. Exact background subtraction processing technique in RCS measurement in time-variant environment[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2193-2199. doi: 10.13700/j.bh.1001-5965.2018.0019(in Chinese)
Citation: YUAN Saisai, LIANG Liya, XU Xiaojianet al. Exact background subtraction processing technique in RCS measurement in time-variant environment[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2193-2199. doi: 10.13700/j.bh.1001-5965.2018.0019(in Chinese)

时变环境下RCS测量中的精确背景抵消处理技术

doi: 10.13700/j.bh.1001-5965.2018.0019
基金项目: 

国家自然科学基金 61371005

详细信息
    作者简介:

    原赛赛  女, 硕士研究生。主要研究方向:雷达成像与雷达信息处理

    许小剑  男, 博士, 教授, 博士生导师。主要研究方向:遥感特征建模、雷达成像与目标识别

    通讯作者:

    许小剑, E-mail:xiaojianxu@buaa.edu.cn

  • 中图分类号: TN957.52

Exact background subtraction processing technique in RCS measurement in time-variant environment

Funds: 

National Natural Science Foundation of China 61371005

More Information
  • 摘要:

    在外场雷达散射截面(RCS)测量中,受随时间变化的环境因素影响,不同时刻测得到的数据其幅度和相位不完全相干,导致直接采用背景矢量相减技术难以有效地抑制背景杂波。建立了测量系统-测试场时变传递函数的参数化模型来表征环境变化对雷达接收回波的影响,并在此基础上提出了一种改进的精确背景抵消处理技术。首先,从现场测量回波数据中提取辅助校准区域数据;然后,利用降噪互相关法和优化相干函数法估计出时变传递函数模型参数,并据此对不同时刻测得的回波数据进行幅度和相位补偿,使得两者完全相干;最后,做精确的背景矢量相减处理。实验结果验证了本文技术和算法的有效性。

     

  • 图 1  RCS测量几何关系示意图

    Figure 1.  Schematic diagram of geometry for RCS measurement

    图 2  校准与背景抵消处理流程

    Figure 2.  Procedure for correction and background subtraction processing

    图 3  高分辨率一维距离像

    Figure 3.  High-resolution 1D range profile

    图 4  辅助校准区域数据提取流程

    Figure 4.  Procedure for data extraction in auxiliary calibration area

    图 5  室内实测目标数据高分辨率一维距离像对比

    Figure 5.  Comparison of high-resolution 1D range profile of target using indoor measurement data

    图 6  仿真目标数据高分辨率一维距离像对比

    Figure 6.  Comparison of high-resolution 1D range profile of target using simulation data

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出版历程
  • 收稿日期:  2018-01-11
  • 录用日期:  2018-04-20
  • 刊出日期:  2018-10-20

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