制导激光编码信息识别技术研究

摘要

Laser pulse coding is used as an anti-jamming measure in semi-active laser guided weapons.Using laser signal pulse arrival time as parameter and analyzing the various existing code patterns and their recognition methods, the encoded information of the laser pulse is successively approximated.At first,a very small number of samples are collected, then different pattern parameters are fitted simultaneously.Combined with fuzzy decision-making theory, the next arrival time of laser pulse is predicted and emission jamming laser instruction is issued.At the same time,detecting the follow-up pulse arrival time is proceeded to increase the number of the sample.So the predicted pattern is constantly adjusted to achieve the precise encoded signals gradually.The results show that this technology could effectively identify pulse code pattern through little information.%激光脉冲编码是半主动激光制导武器采用的一种抗干扰措施,为满足对抗半主动激光制导武器的需要,以激光信号的脉冲到达时间为参数,在分析现有各种码型及其识别方式的基础上,对激光脉冲编码信息逐次逼近,即在得到极少量的激光脉冲样本后,同步拟合解算不同码型参数,并结合模糊决策思想,预测下一脉冲的到达时刻,下达发射干扰脉中的指令,同时侦测敌方目标指示器的后续脉冲到达时刻,在样本不断增长的过程中,对预测码型不断调整,逐步达到精确复制敌方编码信号的目的.试验结果表明,对常见的编码模式,该技术能通过较少的脉冲信息有效的识别脉冲编码规律.