激光角度欺骗和高重频复合干扰有效概率研究

Research on effective probability of laser deception and high repetitive frequency compound jamming

针对处于锁定跟踪阶段的导引头,采用激光角度欺骗和高重频复合干扰手段,对复合干扰下导引头波门录取信号进行了研究。建立了半主动激光制导系统的能量传输模型,描述了角度欺骗干扰、高重频干扰以及两者复合的基本原理;分析了无干扰时、角度欺骗干扰和高重频干扰下连续2个波门录取干扰信号的概率。以角度欺骗超前时间为仿真变量,分析了角度欺骗和高重频复合干扰下波门录取高重频信号的概率。参数对照仿真结果表明,提高制导信号和角度欺骗干扰信号的精度,增加波门宽度,提高高重频激光脉冲频率会增大复合干扰中高重频干扰成功的概率。本研究成果将为复杂战场条件下激光制导干扰与抗干扰应用研究提供参考。

Laser seeker usually adopts anti-jamming technologies such as real-time wave gate and first/last pulse locking.Aiming at the seeker in the locked tracking stage,laser angle deception and high repetition frequency compound jamming were used to study the acquisition signal of seeker wave gate under compound jamming.The energy transmission model of semi-active laser guidance system was established,and the basic principles of angle deception jamming,high repetition rate jamming and their combination were described.Then,the probability of two consecutive wave gates taking jamming signals without interference,angle deception jamming and high repetition rate jamming was analyzed.Taking the lead time of angle deception as a simulation variable,the probability that the wave gate picks up the high repetition rate signal under the combined interference of angle deception and high repetition rate was analyzed.Parameter comparison simulation results show that improving the precision of guidance signal and angle deception jamming signal,increasing the width of wave gate and increasing the frequency of high repetition frequency laser pulse will increase the probability of success of high repetition frequency jamming in compound jamming.The research results will lay a theoretical foundation for the application research of laser guided jamming and anti-jamming under complex battlefield conditions.