调频引信粗糙面目标与干扰信号识别

郝新红; 杜涵宇; 陈齐乐

doi:10.13700/j.bh.1001-5965.2019.0036

调频引信粗糙面目标与干扰信号识别

doi: 10.13700/j.bh.1001-5965.2019.0036

北京理工大学机电动态控制重点实验室, 北京 100081

基金项目:

国家自然科学基金 61871414

详细信息

作者简介:
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

杜涵宇男, 硕士研究生。主要研究方向:无线电引信信号处理及抗干扰技术

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

中图分类号: TJ43⁺4.1
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出版历程
- 收稿日期: 2019-01-23
- 录用日期: 2019-05-18
- 网络出版日期: 2019-10-20

Rough surface target and jamming signal recognition of FM fuze

Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, China

Funds:

National Natural Science Foundation of China 61871414

More Information

Corresponding author: HAO Xinhong, E-mail: haoxinhong@bit.edu.cn

摘要

摘要:
为有效识别调频（FM）引信地面目标回波信号和数字射频存储（DRFM）转发式干扰信号，提出了一种对地调频引信粗糙面目标与干扰信号识别方法。建立了对地调频引信粗糙面差频信号模型，利用二维距离-速度提取方法提取其差频频率和多普勒频率，采用差频频率峰值带宽和多普勒频率峰值带宽2个特征量识别地面目标回波信号和DRFM转发式干扰信号，并使用蒙特卡罗仿真和非参数假设统计检验对其进行了验证。结果表明：差频频率峰值带宽和多普勒频率峰值带宽的展宽幅度与引信天线照射范围内粗糙面的大小呈正相关，多普勒频率峰值带宽的展宽与载频成正比，利用峰值带宽特性可有效区分粗糙面目标回波信号和DRFM转发式干扰信号。
- 调频(FM)引信 /
- 粗糙面目标 /
- 二维距离-速度提取 /
- 数字射频存储(DRFM)干扰 /
- 非参数假设检验
Abstract:
A rough surface target and jamming signal recognition method for the ground frequency modulation (FM) fuze is proposed in order to effectively identify the ground target echo signal of the FM fuze and the digital radio frequency memory (DRFM) transmissive jamming. A rough surface beat frequency signal model of the ground FM fuze is established, and a two-dimensional distance-speed extraction method is used to extract the beat frequency and Doppler frequency. The beat frequency peak bandwidth and the Doppler peak bandwidth are used to identify ground target and the DRFM transmissive jamming, and their utility is verified by Monte Carlo simulation and non-parametric hypothesis statistical test. The results show that the spread of the beat frequency peak bandwidth and the Doppler frequency peak bandwidth is positively correlated with the size of the rough surface under the illumination of the fuze antenna. The Doppler frequency peak bandwidth spread is proportional to the carrier frequency. The peak bandwidth characteristics can be used to distinguish between rough surface target echo and DRFM transmissive jamming.
- frequency modulation (FM) fuze /
- rough surface target /
- two-dimensional distance-speed extraction /
- digital radio frequency memory (DRFM) jamming /
- nonparametric hypothesis test

HTML全文

图 1 引信与粗糙面的位置关系

Figure 1. Positional relationship between fuze and rough surface

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图 2 调频引信二维距离-速度提取方法

Figure 2. Two-dimensional distance-speed extraction method for FM fuze

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图 3 点目标作用下调频引信差频频率与多普勒频率分布

Figure 3. Beat frequency and Doppler frequency distribution of FM fuze under action of point target

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图 4 高斯粗糙面局部示意图

Figure 4. Partial schematic of Gaussian rough surface

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图 5 随机粗糙面目标作用下调频引信差频频率与多普勒频率分布(单次仿真)

Figure 5. Beat frequency and Doppler frequency distribution of FM fuze under action of random rough surface target (single simulation)

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图 6 随机粗糙面目标作用下调频引信差频频率与多普勒频率分布(100次仿真)

Figure 6. Beat frequency and Doppler frequency distribution of FM fuze under action of random rough surface target (100 simulations)

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图 7 随机粗糙面目标作用下X波段调频引信差频频率与多普勒频率分布

Figure 7. Beat frequency and Doppler frequency distribution of X-band FM fuze under action of random rough surface target

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图 8 随机粗糙面目标作用下K波段调频引信差频频率与多普勒频率分布

Figure 8. Beat frequency and Doppler frequency distribution of K-band FM fuze under action of random rough surface target

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图 9 差频频率峰值带宽和多普勒频率峰值带宽的平均值随高度的变化

Figure 9. Variation of average value of beat frequency peak bandwidth and Doppler frequency peak bandwidth with height

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图 10 点目标作用下调频引信多普勒输出波形

Figure 10. FM fuze Doppler output waveform under action of point target

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图 11 土地目标作用下调频引信多普勒输出波形

Figure 11. FM fuze Doppler output waveform under action of earth target

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图 12 DRFM干扰下引信对抗试验测试结果

Figure 12. Fuze countermeasure test results under DRFM jamming

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图 13 粗糙面目标和模拟点目标的DRFM干扰作用下调频引信差频频率峰值带宽和多普勒频率峰值带宽箱型图

Figure 13. Box diagram of beat frequency peak bandwidth and Doppler frequency peak bandwidth of FM fuze under action of rough surface targets and DRFM jamming signals simulating point targets

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