调频多普勒引信抗调幅干扰性能分析

左环宇; 郝新红; 岳凯

doi:10.13700/j.bh.1001-5965.2016.0829

调频多普勒引信抗调幅干扰性能分析

doi: 10.13700/j.bh.1001-5965.2016.0829

北京理工大学机电学院, 北京 100081

基金项目:

国防“973”计划 613196

详细信息

作者简介:
左环宇  男, 硕士研究生。主要研究方向:无线电引信信号处理

郝新红  女, 博士, 副教授, 博士生导师。主要研究方向:无线电探测与信号处理、信息感知与对抗技术

岳凯  男, 博士研究生。主要研究方向:无线电引信及其对抗技术

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

中图分类号: TJ434.1
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出版历程
- 收稿日期: 2016-10-26
- 录用日期: 2017-01-20
- 网络出版日期: 2017-10-20

Anti-AM jamming performance analysis of FM Doppler fuze

School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China

Funds:

National Security Program on Key Basic Research Project of China 613196

More Information

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

摘要

摘要:
为提高调频多普勒引信抗调幅干扰性能，定量研究了调幅干扰对其作用机理，以信干比（SJR）增益作为表征参量定量研究了不同调幅干扰作用下调频多普勒引信的抗干扰性能。详细推导了正弦波调幅、方波调幅和三角波调幅干扰作用下调频多普勒引信的信干比增益，并对其进行了仿真验证。定量分析、仿真与引信实验测试结果表明：在调幅干扰下调频多普勒引信总信干比增益在10 dB量级；调频多普勒引信抗各种调制样式调幅干扰能力相当，对调幅干扰调制样式不敏感；调幅指数对调频多普勒引信抗干扰性能基本无影响；减小多普勒滤波器带宽可以一定程度提高调频多普勒引信系统抗干扰性能。
- 调频多普勒引信 /
- 调幅干扰 /
- 抗干扰 /
- 信干比(SJR)增益 /
- 多普勒滤波器 /
- 仿真
Abstract:
To improve the anti-AM jamming performance of FM Doppler fuze, the AM jamming mechanism was quantitatively studied, and the anti-jamming performance of FM Doppler fuze under different AM jamming was quantitatively studied with signal to jamming ratio (SJR) gain as descriptive parameter. The SJR gains of FM Doppler fuze in the environment of sine wave AM jamming, square wave AM jamming and triangle wave AM jamming were deduced in detail and verified by simulation. Quantitative analysis, simulation and experimental results indicate that the total SJR gain of FM Doppler fuze is at 10 dB under AM jamming; anti-AM jamming performance of FM Doppler fuze is not sensitive to the types of AM waves; modulation depth nearly has no effects on the anti-jamming performance of FM Doppler fuze; to a certain extent, reducing Doppler filter bandwidth can improve the anti-jamming performance of FM Doppler fuze system.
- FM Doppler fuze /
- AM jamming /
- anti-jamming /
- signal to jamming ratio (SJR) gain /
- Doppler filter /
- simulation

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图 1 调频多普勒引信原理框图

Figure 1. Principle diagram of FM Doppler fuze

下载: 全尺寸图片幻灯片

图 2 正弦波调幅干扰模型

Figure 2. Model of sine wave AM jamming

下载: 全尺寸图片幻灯片

图 3 调频多普勒引信总信干比增益与带通滤波器带宽和多普勒滤波器带宽的关系

Figure 3. Relationship between total SJR gain of FM Doppler fuze and bandpass filter bandwidth as well as Doppler filter bandwidth

下载: 全尺寸图片幻灯片

表 1 调幅干扰下调频多普勒引信信干比增益理论分析结果

Table 1. Theoretical analysis results of SJR gain of FM Doppler fuze under AM jamming

干扰信号样式	SJR_I	SJR_O	G
正弦波调幅
方波调幅
三角波调幅

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表 2 调频多普勒引信抗调幅干扰仿真结果

Table 2. Simulation results of anti-AM jamming for FM Doppler fuze

干扰信号样式	输入功率仿真值/W	输出功率仿真值/(10^-4W)	总信干比增益仿真值/dB	总信干比增益理论值/dB	总信干比增益表达式
正弦波调幅	0.501 2	5.349 5	9.797 3	8.104 1
方波调幅	0.499 0	3.677 3	11.406 1	9.696 5
三角波调幅	0.500 0	4.571 2	10.469 8	8.179 0

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表 3 实验中各类干扰波形样式下使引信启动最小干扰功率

Table 3. Minimum experimental jamming power of fuze actuation under different jamming waves

干扰波形样式	干扰信号调幅指数/%	使1^#引信启动最小干扰功率/dBm	使2^#引信启动最小干扰功率/dBm
正弦波调幅扫频	50 100	-15 -15	-17 -17
方波调幅扫频	50 100	-15 -15	-23 -23
三角波调幅扫频	50 100	-14 -14	-18 -18
锯齿波调幅扫频	50 100	-14 -14	-16 -16

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