侵彻混凝土靶板层数快速算法

摘要

When the projectile penetrate concrete, in order to accurately control the initiation time to maximize the power of the warhead, to get the information of the number of layers of the penetration of concrete targets from measurement data a fast analytical processing timely is very important. This paper is proposed that the combination of lifting wavelet and median filter to pretreat the acceleration signal is used. Firstly, use lifting wavelet transform to separate the low-frequency components of the signal. Secondly,median filtering technology to filte out the mixed pulse and vibration interference are adopted. Calculating the short-term energy after pretreat signal, highlighting the strength of the contrast signal after square processing, weakening the effects of noise ,then threshold method to detect signal and obtain penetrating concrete target layers information quickly are adopted.%当弹丸侵彻混凝土时,为了精确控制起爆时机,需要对测量数据进行快速的分析处理及时获得侵彻混凝土靶板的层数信息,最大限度地发挥战斗部的威力.提出采用提升小波和中值滤波相结合的方法对加速度信号进行预处理.首先利用提升小波变换将信号的低频成分分离出来；然后利用中值滤波技术滤掉混杂的脉冲和振动干扰.将预处理后的信号计算其短时能量,信号经过平方处理后突出了强弱的对比度,削弱了噪声的影响,通过提取信号的幅值陡变的特征来检测信号,从而快速获得侵彻混凝土靶板层数信息.