多层侵彻引信层数识别研究

Research on Recognition of the Number of Layers of Multilayer Penetration Fuze

为了实现侵彻武器对炸点的精准控制,达到最佳的毁伤效果,多层侵彻引信层数的精确识别至关重要。传统的计层技术基于侵彻过载的轴向加速度阈值来识别层数,这种方法非常容易产生误判,从而导致侵彻弹的毁伤效果大打折扣。因此,提出一种新型识别方法,采用短时傅里叶变换来对多层侵彻信号进行处理,通过对其频率成分的分析以及梯度的提取,然后获得其频率变换随时间的的曲线,根据其频率成分来获取层数信息,最后通过实测信号进行分析比较验证,进而验证了该方法的可行性。

In order to realize the accurate control of the burst point by the penetrating weapon and achieve the best damage effect,the accurate identification of the layers of the multi-layer penetrating fuze is very important.The traditional layer counting technique is based on threshold to identify the number of layers.This method is very easy to produce misjudgments,which will greatly reduce the damage effect of penetrating projectiles.In this paper,a new recognition method is proposed.The short time Fourier transform is used to deal with the multi-layer penetrating signal .Through the analysis of its frequency component and the extraction of the gradient,the frequency transformation curves with time are obtained,and the number of information is obtained according to its frequency.Finally,the real time is obtained.The measured signal is analyzed,compared and verified,and the feasibility of the method is verified.