脉冲多普勒引信抗周期调制干扰性能研究

刘少坤; 闫晓鹏; 栗苹; 于洪海

doi:10.13700/j.bh.1001-5965.2017.0369

脉冲多普勒引信抗周期调制干扰性能研究

doi: 10.13700/j.bh.1001-5965.2017.0369

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 61673066

国防“973”计划 613196

详细信息

作者简介:
刘少坤  男, 博士研究生。主要研究方向:无线电引信对抗技术

闫晓鹏  男, 博士, 副教授。主要研究方向:引信信息对抗技术、引信电磁环境与效应、引信信号处理技术

栗苹  女, 博士, 教授。主要研究方向:近感探测技术、引信信息对抗技术、引信电磁环境与效应

于洪海  男, 硕士研究生。主要研究方向:无线电引信信号处理

通讯作者:
闫晓鹏, E-mail: yanxiaopeng@bit.edu.cn

中图分类号: TJ434.1
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出版历程
- 收稿日期: 2017-06-01
- 录用日期: 2017-08-31
- 网络出版日期: 2018-05-20

Anti-periodic modulation jamming performance of pulse Doppler fuze

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

Funds:

National Natural Science Foundation of China 61673066

National Security Program on Key Basic Research Project of China 613196

More Information

Corresponding author: YAN Xiaopeng, E-mail: yanxiaopeng@bit.edu.cn

摘要

摘要:
为了定量分析和表征脉冲多普勒（PD）引信的抗干扰性能，以处理增益为参量，研究了周期调制干扰信号对脉冲多普勒引信的作用效果，明确了脉冲多普勒引信抗干扰性能的影响因素。理论推导了典型周期调制干扰信号作用下，脉冲多普勒引信从接收回波到相关检测这一过程的处理增益，获得了脉冲多普勒引信抗干扰性能与影响因素之间的量化关系，既为脉冲多普勒引信抗干扰设计提供了理论依据，又为脉冲多普勒引信抗干扰性能评估提供了技术支撑。理论推导、仿真和实测结果表明：脉冲多普勒引信抗周期性调幅干扰性能弱于抗周期性调频干扰性能；抗周期调制干扰性能主要受距离门脉冲宽度、多普勒滤波器类型和带宽影响。
- 脉冲多普勒(PD)引信 /
- 抗干扰性能 /
- 处理增益 /
- 周期调幅干扰 /
- 周期调频干扰
Abstract:
The jamming effect of periodic modulation signal on pulse Doppler (PD) fuze is studied based on the parameter of processing gain to quantitatively analyze and characterize the anti-jamming performance of PD fuze and obtain the factor that affects the anti-jamming performance of PD fuze. The processing gain of the procedure from echo reception to correlation detection under the interference of typical periodic modulation jamming style is derived. The quantitative relation between the anti-jamming performance of PD fuze and the characteristic parameter that affects the anti-jamming performance is obtained. It provides a theoretical basis for the improvement of interference performance of PD fuze and technical support for the interference performance assessment of PD fuze. Theoretical derivation, simulation and measurement results indicate that the anti-jamming performance of PD fuze to periodic amplitude modulation is worse than its anti-jamming performance to periodic frequency modulation, and the anti-periodic modulation jamming performance mainly depends on range gate pulse width, Doppler filter bandwidth and filter type.
- pulse Doppler (PD) fuze /
- anti-jamming performance /
- processing gain /
- periodical amplitude modulation jamming /
- periodical frequency modulation jamming

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图 1 脉冲多普勒引信原理框图

Figure 1. Block diagram of PD fuze principle

下载: 全尺寸图片幻灯片

图 2 距离门输出单边谱

Figure 2. One-sided spectrum of range gate output

下载: 全尺寸图片幻灯片

图 3 距离门脉冲宽度与处理增益量化关系

Figure 3. Quantitative relationship between range gate pulse width and processing gain

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图 4 多普勒低通滤波器通带宽度与处理增益量化关系

Figure 4. Quantitative relationship between Doppler low pass filter bandwidth and processing gain

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图 5 多普勒带通滤波器通带宽度与处理增益量化关系

Figure 5. Quantitative relationship between Doppler band pass filter bandwidth and processing gain

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表 1 周期调制干扰信号作用下脉冲多普勒引信处理增益仿真结果

Table 1. Simulation results of PD fuze processing gain under interference of periodic modulation jamming signal

干扰信号样式	干扰波性参数			处理增益
干扰信号样式	载波幅值/V	调制周期/kHz	调制频偏/MHz	理论值/dB	仿真值/dB	表达式
正弦波调幅	0.816 5	40		20.000	20.525
方波调幅	0.707 1	40		19.114	19.550
正弦波调频	1	40	20	23.010	23.319
方波调频	1.050 8	40	20	25.590	24.901

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表 2 不同距离门脉冲宽度条件下使引信启动最小干扰功率实测值

Table 2. Measured value of minimum interference power of fuze starting at different range gate pulse width

dBm
干扰信号样式	最小干扰功率
干扰信号样式	400 ns脉冲宽度	800 ns脉冲宽度	1 200 ns脉冲宽度
方波调幅	-13	-16	-17
方波调频	-12	-13	-15

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表 3 不同多普勒滤波器通带宽度条件下使引信启动最小干扰功率实测值

Table 3. Measured value of minimum interference power of fuze starting at different Doppler filter bandwidth

dBm
干扰信号样式	最小干扰功率
干扰信号样式	10 kHz通带宽度	20 kHz通带宽度	30 kHz通带宽度
方波调幅	-16	-23	-25
正弦波调幅	-20	-21	-23
方波调频	-13	-14	-14
正弦波调频	-14	-14	-15

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