首页> 外文OA文献 >Wavelet-based signal processing of electromagnetic pulse generated waveforms
【2h】

Wavelet-based signal processing of electromagnetic pulse generated waveforms

机译:基于小波的电磁脉冲产生波形的信号处理

摘要

This thesis investigated and compared alternative signal processing techniques that used wavelet-based methods instead of traditional frequency domain methods for processing measured electromagnetic pulse (EMP) waveforms. The primary focus of the research was equalization and filtering techniques for processing EMP signals in additive white noise. Signal equalization was conducted at the sub-band level through the use of Infinite Impulse Response (IIR) filters and channel response characteristics. A brief investigation of signal de-noising through wavelet thresholding was also conducted. This thesis also addressed and provided viable methods for signal extraction and DC bias removal for a given measured EMP waveform. The mean squared error is used as the basis for the comparison of the effectiveness of the equalization algorithm. It was found that wavelet techniques provided results that were as well or better than traditional Fourier techniques. In systems with additive noise , wavelet-based techniques exceeded the performance of the Fourier-based methods and surpassed them when de-noising techniques were used.
机译:本文研究并比较了替代信号处理技术,该技术使用基于小波的方法代替传统的频域方法来处理电磁脉冲(EMP)波形。该研究的主要重点是在加性白噪声中处理EMP信号的均衡和滤波技术。通过使用无限脉冲响应(IIR)滤波器和信道响应特性,可以在子带级进行信号均衡。还通过小波阈值对信号降噪进行了简要研究。本文还针对给定的测量EMP波形提供了可行的信号提取和直流偏置消除方法。均方误差用作比较均衡算法有效性的基础。发现小波技术提供的结果与传统傅立叶技术相同或更好。在具有加性噪声的系统中,基于小波的技术超过了基于傅立叶的方法的性能,并且在使用降噪技术时超过了基于小波的技术。

著录项

  • 作者

    Ardolino Richard S.;

  • 作者单位
  • 年度 2007
  • 总页数
  • 原文格式 PDF
  • 正文语种
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号