基于相似度的无线电引信抗干扰能力量化表征方法

摘要

为有效量化无线电引信的抗干扰能力,在定义无线电引信目标函数的基础上,提出基于相似度的无线电引信抗干扰能力量化表征方法.对正常目标回波进行分析,确定引信的目标函数,并以此为参考信号,计算不同信息型干扰作用下引信收发相关信道输出信号的相似度,若某种信息型干扰作用下获得的相似度的值越小,则引信抗该种信息型干扰的能力越强,反之越弱;以某对地连续波多普勒引信为例,对此方法进行验证.计算实例表明,该方法客观、合理,具有可操作性,可量化对比不同干扰作用下引信的抗干扰能力.%In order to quantify the anti-jamming performance of radio fuze effectively,a similarity-based quantification method of radio fuze anti-jamming performance is proposed based on the definition of the radio fuze target function.The target function is determined through the analysis of the normal target echo signal.The similarity between this target function and output signals of fuze transceiver correlation channel under different types of information jamming are calculated separately.The smaller the similarity under a certain type of information jamming is,the stronger the anti-jamming performance is,and the weaker it is conversely.The proposed quantification method is validated on a continuous wave Doppler fuze for ground-to-ground projectile.Calculation example indicates that this method is objective,reasonable and operability,and can quantitatively evaluate the fuze anti-jamming performance under different types of jamming.