摘要
为了得到聚能爆炸期间真实的电磁脉冲,通过对不同状态下记录的背景信号进行分析,得到了聚能爆炸过程中背景信号的特征,应用小波变换对失真的瞬态电磁脉冲进行处理,实现了噪声的滤除及干扰信号的分离,进而提取到了真实的聚能爆炸电磁脉冲,在此基础上,计算得到了聚能爆炸电磁辐射的频谱分布。结果表明,聚能爆炸引起的电磁辐射频率主要分布在2MHz以下。
In order to obtain real electromagnetic radiation during explosion of shaped charge,the background signal recorded on different conditions is analyzed, so the characteristics of noise and interference during explosion of shaped charge are obtained. Transient electromagnetic pulses are processed by wavelet Iransform to achieve noise filter and interference signal separation, and then the true electromagnetic pulses from explosion of shaped charge are extracted. Based on the above, the specmmas of electromagnetic radiation of explosion are calculated, it shows that the main electromagnetic radiation distributes below 2MHz.
出处
《火工品》
CAS
CSCD
北大核心
2010年第5期26-29,共4页
Initiators & Pyrotechnics
基金
国家重点基础研究发展计划资助(2010CB731800)
关键词
聚能装药
爆炸
电磁辐射
电磁脉冲
小波
Shaped charge
Explosion
Electromagnetic radiation
Electromagnetic pulse
Wavelet
