高重频激光对激光导引头的干扰机理研究  

Research on the jamming mechanism of high repetition laser on laser seeker

作　　者：张帅[1] 刘志国[1] 赵乾[1] 王仕成[1] 

机构地区：[1]第二炮兵工程大学控制工程系,陕西西安710025

出　　处：《激光与红外》2015年第12期1467-1472,共6页Laser & Infrared

基　　金：陕西省工业攻关计划项目(No.2012GY2-34)资助

摘　　要：高重频激光对导引头的干扰涉及到导引头内部自动增益控制(AGC)电路、脉冲展宽电路及信息处理组件等多个部分,频率、能量等因素对不同电路的干扰效果相互影响、叠加,导致对干扰效果的评估复杂。为确定不同影响因素的干扰效果,研究了激光导引头内部电路对激光信号的处理过程,从信号处理的角度分析了高重频激光对激光导引头的干扰机理与干扰效果,并进行了定性验证实验。结果表明,在干扰激光能够进入导引头波门的前提下,高重频激光能量是影响高重频激光对AGC电路及脉冲展宽电路干扰效果的主要因素;在干扰激光能量达到导引头接收阈值的前提下,重复频率是影响高重频激光对信息处理组件干扰效果的主要因素;定性实验在一定程度上验证了机理分析的正确性。The jamming of high repetition laser on laser seeker involves the internal circuits of the laser seeker,such as automatic gain control（ AGC） circuit,pulse broadening circuit,information processing component and so on. During the jamming process,the interplay of the different influence factors leads to the assessment complexity of jamming effects,such as frequency and energy of the laser. To confirm the jamming effects of different influence factors,the signal processing of laser seeker internal circuits for laser signal is studied,and jamming mechanism and jamming effects of high repetition laser on laser seeker are analyzed from signal processing. The qualitative experiment is done. The results indicate that,the pulse energy of high repetition laser is the main jamming factor for AGC circuit and pulse broadening circuit when the jamming laser can enter into the seeker working gate. The frequency of high repetition laser is the main jamming factor for information processing component when the jamming laser energy exceeds the seeker threshold. The qualitative experiment proves the validity of the mechanism analysis.

关 键 词：高重频激光 干扰机理 激光导引头 自动增益控制 脉冲展宽 

分 类 号：TN977[电子电信—信号与信息处理]