调频多普勒引信抗调幅干扰性能分析  

Anti-AM jamming performance analysis of FM Doppler fuze

作　　者：左环宇 郝新红[1] 岳凯[1] 

机构地区：[1]北京理工大学机电学院,北京100081

出　　处：《北京航空航天大学学报》2017年第10期2163-2170,共8页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国防"973"计划(613196)~~

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 d B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。To improve the anti-AM jamming performance of FM Doppler fuze, the AM jamming mecha- nism was quantitatively studied, and the anti-jamming performance of FM Doppler fuze under different AM jamming was quantitatively studied with signal to jamming ratio （S JR） gain as descriptive parameter. The S JR 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 ex- perimental results indicate that the total SJR gain of FM Doppler fuze is at l0 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 fil- ter bandwidth can improve the anti-jamming performance of FM Doppler fuze system.

关 键 词：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 

分 类 号：TJ434.1[兵器科学与技术—火炮、自动武器与弹药工程]