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一种用于电磁脉冲测量的数字积分器设计
A digital integrator design for electromagnetic pulse measurement
投稿时间:2019-05-06  修订日期:2019-06-28
中文关键词:电磁脉冲 数字积分 小波 软阈值 零漂
英文关键词:EMP  digital integral  wavelet soft  threshold zero  drift
基金项目:
作者单位E-mail
郭晓东 中国工程物理研究院计量测试中心 podarguo@163.com 
朱宇洁 中国工程物理研究院计量测试中心  
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中文摘要:
      在激光打靶实验过程中会产生电磁脉冲(EMP)信号,测量这些电磁脉冲信号所使用的电场探头输出信号多数为微分信号,需要进行积分后才能得到测量结果。模拟积分器由于带宽限制,不能满足测量要求,只能通过数字积分器来完成积分。本文基于小波变换与傅里叶变换对数字积分器进行设计,采用小波软阈值法与低频去零漂法对微分信号中高频随机噪声及零漂误差进行处理。经过研究分析,可以对上升时间小于100ns的电磁脉冲信号进行积分,并取得了较好的效果。
英文摘要:
      Electromagnetic Pluse (EMP) signals are generated in laser shooting experiment. The output signals of electric field probe used to measure these EMP signals are differential signals, which need to be integrated before the measurement results can be obtained. Because of the bandwidth limitation, analog integrator can not meet the measurement requirements, only through digital integrator to complete the integration. In this paper, the digital integrator is designed based on the wavelet transform and Fourier transform. The wavelet soft threshold method and the low frequency zero drift removal method are used to deal with the high frequency random noise and zero drift error of differential signals. After research and analysis, it can integrate the EMP signals whose rise time is less than 100ns, and has achieved good results.
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