基于盒差分滤波的侵彻引信计层信号预处理方法

An Acceleration Signal Preprocessing Method Based on Difference of Boxes Filter

针对长径比大的战斗部高速侵彻多层目标时,存在层与层之间的过载相互粘连,侵彻引信难以准确计算层数的问题,提出了基于盒差分滤波的侵彻引信计层信号预处理方法。该方法将图像处理中的盒差分滤波的边缘检测思想用于侵彻引信对战斗部穿靶过载的计层信号预处理中,将交流耦合后的原始数据按盒差分进行卷积递推后再进行低通滤波,从而实现对穿靶过载上升沿和下降沿的检测。仿真实验结果表明,经过处理后的层信号前后沿明显,具有较好的分层特性,再结合阈值法可以有效地识别出战斗部的入靶出靶。

In order to recognize the warhead with large aspect ratio at high speed penetrating into and out a hard target,an idea of edge detection in image processing was applied to the layer detection and a acceleration signal reprocessing based on DOB(difference of boxes)filter was presented.In this method,the data after AC coupling was convoluted according to DOB filter,and then low-pass filtering was carried out.The simulation results showed that the layer properties of the processed signal was very clear,and the warhead penetrating into and out a hard target could be effectively recognized by combining with the threshold method.