联合干扰感知与参数估计的抗间歇采样转发干扰方法

王荣清 谢旌阳 田彪 徐世友 陈曾平

王荣清, 谢旌阳, 田彪, 等. 联合干扰感知与参数估计的抗间歇采样转发干扰方法[J]. 雷达学报(中英文), 待出版. doi: 10.12000/JR24153
引用本文: 王荣清, 谢旌阳, 田彪, 等. 联合干扰感知与参数估计的抗间歇采样转发干扰方法[J]. 雷达学报(中英文), 待出版. doi: 10.12000/JR24153
WANG Rongqing, XIE Jingyang, TIAN Biao, et al. Integrated jamming perception and parameter estimation method for anti-interrupted sampling repeater jamming[J]. Journal of Radars, in press. doi: 10.12000/JR24153
Citation: WANG Rongqing, XIE Jingyang, TIAN Biao, et al. Integrated jamming perception and parameter estimation method for anti-interrupted sampling repeater jamming[J]. Journal of Radars, in press. doi: 10.12000/JR24153

联合干扰感知与参数估计的抗间歇采样转发干扰方法

DOI: 10.12000/JR24153
基金项目: 国家自然科学基金 (62371477),广东省科技厅项目(2019ZT08X751),深圳市科创局项目(KQTD20190929172704911)
详细信息
    作者简介:

    王荣清,硕士生,主要研究方向为雷达波形设计、干扰对抗

    谢旌阳,博士生,主要研究方向为通信感知一体化、多功能波形设计与处理

    田 彪,博士,副教授,博士生导师,主要研究方向为ISAR成像、雷达波形设计、雷达目标识别等

    徐世友,博士,教授,博士生导师,主要研究方向为宽带雷达成像、自动目标识别、信息融合等

    陈曾平,博士,教授,博士生导师,主要研究方向为空间态势感知、软件化雷达探测、宽带成像识别等

    通讯作者:

    田彪 tianb28@mail.sysu.edu.cn

  • 责任主编:李永祯 Corresponding Editor: LI Yongzhen
  • 中图分类号: TN972

Integrated Jamming Perception and Parameter Estimation Method for Anti-Interrupted Sampling Repeater Jamming

Funds: The National Natural Science Foundation of China (62371477), Guangdong Science and Technology Program (2019ZT08X751), Shenzhen Science and Technology Program (KQTD20190929172704911)
More Information
  • 摘要: 间歇采样转发干扰是一种脉内相干干扰,其形成的电子假目标与真实目标高度相似,对雷达目标检测造成了严重威胁。传统抗干扰方法较为被动,且没有考虑到干扰机策略的变化,在干扰抑制时难免会出现干扰残留以及信号损失的情况。为了提升雷达抗干扰性能,该文提出一种联合“干扰感知-参数估计-干扰抑制”的抗干扰方案。首先,利用双向-双滑窗脉冲沿检测和滑动截断匹配滤波方法,准确提取接收回波中的干扰分量并估计采样时长和周期等参数。在此基础上,重构出干扰信号分量并将其从回波中剔除,从而确保准确有效的目标检测。仿真实验表明,所提方法在不损失信号能量的情况下,对于不同调制方式下的间歇采样转发干扰都具有较好的抑制效果。当干噪比为9 dB时,干扰抑制后信干比提升大于33 dB,保证了雷达稳健的抗干扰性能。

     

  • 图  1  ISRJ产生原理

    Figure  1.  The generation principle of ISRJ

    图  2  ISRJ参数估计与抑制流程

    Figure  2.  The process of ISRJ parameter estimation and suppression

    图  3  双向-双滑窗脉冲检测示意图

    Figure  3.  Schematic diagram of bidirectional dual-window pulse edge detection

    图  4  STMF工作流程

    Figure  4.  The workflow of STMF

    图  5  联合抗ISRJ方法流程图

    Figure  5.  The flow chart of the proposed joint anti-ISRJ method

    图  6  仿真雷达回波与ISPRJ

    Figure  6.  Simulated radar echo with ISPRJ

    图  7  ISPRJ脉冲检测与参数估计结果

    Figure  7.  Pulse edge detection and parameter estimation results of echo with ISPRJ

    图  8  参数估计性能曲线

    Figure  8.  The curve of parameter estimation performance

    图  9  LFM波形干扰抑制前后回波时频分布情况

    Figure  9.  TFD of received echo before and after anti-jamming of LFM waveform

    图  10  LFM波形干扰抑制前后回波脉压结果

    Figure  10.  PC results of received echo before and after anti-jamming of LFM waveform

    图  11  干扰抑制后假目标脉压结果图

    Figure  11.  PC result of false target after anti-jamming

    图  12  性能指标随参数估计误差变化曲线

    Figure  12.  The variation curves of performance index with parameter estimation error

    图  13  LFM波形不同方法干扰抑制后脉压结果对比图

    Figure  13.  Comparison of PC results after anti-jamming by different methods of LFM waveform

    图  14  LFM波形下SJRIF随JSR变化曲线

    Figure  14.  The variation curves of SJRIF with JSR for LFM waveform

    图  15  LFM波形下SLR随JSR变化曲线

    Figure  15.  The variation curves of SLR with JSR for LFM waveform

    图  16  捷变波形干扰抑制前后回波时频分布情况

    Figure  16.  TFD of received echo before and after anti-jamming of agile waveform

    图  17  捷变波形干扰抑制前后回波脉压结果

    Figure  17.  PC results of received echo before and after anti-jamming of agile waveform

    图  18  捷变波形下SJRIF随JSR变化曲线

    Figure  18.  The variation curves of SJRIF with JSR for agile waveform

    图  19  捷变波形下SLR随JSR变化曲线

    Figure  19.  The variation curves of SLR with JSR for agile waveform

    图  20  相位编码波形干扰抑制前后回波脉压结果

    Figure  20.  PC results of received echo before and after anti-jamming of phase-coded waveform

    图  21  相位编码波形下性能指标随JSR变化曲线

    Figure  21.  The variation curves of performance index with JSR for phase-coded waveform

    表  1  雷达与目标参数

    Table  1.   Radar and target parameters

    参数 数值
    脉冲宽度 T 24 μs
    信号带宽 B 36 MHz
    采样率 ${f_{\text{s}}}$ 72 MHz
    脉冲重复周期 ${\text{PRI}}$ 100 μs
    中心载频 ${f_{\text{c}}}$ 3 GHz
    目标距离 R 9 km
    下载: 导出CSV

    表  2  干扰机参数

    Table  2.   Jammer parameters

    参数 数值
    干扰转发时延 ${\tau _{\text{J}}}$ 0 μs
    干扰采样时长 ${T_{\text{I}}}$ 2 μs
    干扰采样周期 ${T_{\text{J}}}$ 8 μs
    转发次数 M 3
    信噪比 SNR 3 dB
    干信比 JSR 6 dB
    下载: 导出CSV

    表  3  ISRJ参数估计结果

    Table  3.   The parameters estimation results of ISRJ

    参数 参数估计值 AE
    文献[23]方法 所提方法 文献[23]方法 所提方法
    PWJ(μs) 5.8972 6.0089 0.1028 0.0089
    6.0953 6.0075 0.0953 0.0075
    6.1041 6.0097 0.1041 0.0097
    ${\bar T_{\text{I}}}$(μs) 1.9018 2.0125 0.0982 0.0125
    ${N_M}$ 3 3 0 0
    下载: 导出CSV
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  • 收稿日期:  2024-08-07
  • 修回日期:  2024-09-12

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