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基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法

陈齐乐 郝新红 闫晓鹏 乔彩霞 王雄武

陈齐乐, 郝新红, 闫晓鹏, 等 . 基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法[J]. 北京航空航天大学学报, 2020, 46(7): 1317-1324. doi: 10.13700/j.bh.1001-5965.2019.0451
引用本文: 陈齐乐, 郝新红, 闫晓鹏, 等 . 基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法[J]. 北京航空航天大学学报, 2020, 46(7): 1317-1324. doi: 10.13700/j.bh.1001-5965.2019.0451
CHEN Qile, HAO Xinhong, YAN Xiaopeng, et al. Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(7): 1317-1324. doi: 10.13700/j.bh.1001-5965.2019.0451(in Chinese)
Citation: CHEN Qile, HAO Xinhong, YAN Xiaopeng, et al. Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(7): 1317-1324. doi: 10.13700/j.bh.1001-5965.2019.0451(in Chinese)

基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法

doi: 10.13700/j.bh.1001-5965.2019.0451
基金项目: 

国家自然科学基金 61871414

国家“973”计划 613196

详细信息
    作者简介:

    陈齐乐  男, 博士研究生。主要研究方向:无线电引信信号处理技术

    郝新红  女, 博士, 副教授, 博士生导师。主要研究方向:中近程探测及控制技术、引信抗干扰技术

    闫晓鹏  男, 博士, 副教授, 博士生导师。主要研究方向:电子对抗技术、引信干扰技术

    乔彩霞  女, 硕士研究生。主要研究方向:无线电引信目标特征识别技术

    王雄武  男, 硕士研究生。主要研究方向:无线电引信抗干扰技术

    通讯作者:

    郝新红, E-mail: haoxinhong@bit.edu.cn

  • 中图分类号: TJ43+4.1

Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging

Funds: 

National Natural Science Foundation of China 61871414

National Basic Research Program of China 613196

More Information
  • 摘要:

    为提高混沌码调相与线性调频(CCPM-LFM)复合调制无线电引信的抗扫频式干扰性能,分析了扫频式干扰作用下复合调制无线电引信的响应,并提出了谐波系数幅值平均的抗干扰方法。在瞬时相关和谐波解调串联(ICHD)定距算法原理的基础上,采用快速傅里叶变换(FFT)算法提取谐波包络,并对多次FFT所得谐波系数幅值平均,充分利用混沌码的随机性和统计特性抑制干扰。理论和仿真结果表明:所提方法在不影响引信定距精度的前提下,能够有效抑制扫频干扰。

     

  • 图 1  复合调制引信原理框图

    Figure 1.  Functional block diagram of hybrid modulation fuze

    图 2  扫频式干扰效果示意图

    Figure 2.  Schematic of sweep jamming effectiveness

    图 3  基于谐波系数幅值平均的抗干扰方法原理

    Figure 3.  Schematic diagram of anti jamming method based on harmonic coefficient amplitude averaging

    图 4  定距算法仿真结果

    Figure 4.  Simulation results of ranging algorithms

    图 5  距离旁瓣抑制

    Figure 5.  Ranging sidelobe suppression

    图 6  扫频式干扰抑制

    Figure 6.  Sweep jamming suppression

    图 7  不同G值引信能够正常工作的最大SJR

    Figure 7.  Maximum SJR of fuse in normal work situation with different values of G

    图 8  G值对算法性能的影响

    Figure 8.  Effect of values of G on algorithm performance

    表  1  仿真参数

    Table  1.   Simulation parameters

    参数 数值
    载波频率f0/MHz 300
    调制频率fm/kHz 25
    调频带宽ΔF/MHz 50
    码元宽度Tc/ns 50
    引信同目标的初始距离R/m 15~0
    弹目径向相对运动速度v0/(m·s-1) 500
    输入信干比SJR/dB -10
    扫频起始/终止频率fj0~fjw/MHz 350~450
    扫频点数N 100
    扫频驻留时间Tdw/ms 1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-08-20
  • 录用日期:  2019-09-27
  • 刊出日期:  2020-07-20

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