强激光与粒子束2018，Vol.30Issue(1)：50-54,5.DOI:10.11884/HPLPB201830.170270
广义互相关电晕放电辐射信号时延估计方法
Time-delay estimation of corona discharge radiation signal based on generalized cross correlation
摘要
Abstract
The orientation of corona discharge radiant point was mostly realized by time difference orientation method based on the time-delay estimation.On the testing locales,the precision of the time-delay estimation was influenced by various background noise and interferential signals.The time-delay estimation method of generalized cross correlation was researched in this paper based on analyzing the domestic and international research dynamic state,which aimed at the localization of the basic cross correlation time-delay estimation,such as the low resolution definition and the weak robustness,etc.The time-delay estimation method which was suitable for the corona discharge radiation signal was searched by simulation comparing and experiment validating based on adopting different weight function.The research indicated that the time-delay estimation method of generalized cross correlation based on weighted Hassab-Boucher (HB) had the best restraining effect and highest precision for the periodicity interferential signals in the reality testing environment,and the error of the time-delay estimation was 4.5 ％.It was feasible to carry out the time-delay estimation and far distance orientation of the corona signals in the actual engineering application.关键词
电晕放电/广义互相关/Hassab-Boucher加权法/时延估计Key words
corona discharging/generalized cross correlation/Hassab-Boucher weighting method/time-delay estimation分类
信息技术与安全科学引用本文复制引用
胡小锋,刘卫东,王雷,魏明,张悦..广义互相关电晕放电辐射信号时延估计方法[J].强激光与粒子束,2018,30(1):50-54,5.基金项目
国家自然科学基金面上项目(51777213) （51777213）
