电波科学学报2017，Vol.32Issue(6)：650-656,7.DOI:10.13443/j.cjors.2017082301
现场环境下设备区域电磁干扰检测与识别方法
Detection and identification for electromagnetic interference of equipment area on-site
摘要
Abstract
It is very difficult to measure and identify the electromagnetic interference on-site due to the transient signals.Effective identification of the electromagnetic interference for electronic equipment area provides an important basis for the spectral analysis of the radio astronomy site.Base on electromagnetic interference measurement spectrum,an electromagnetic interference (EMI) signal detection and identification method for electronic equipment area on-site is proposed.The multi-group environment spectrum and equipment area spectrum are obtained and preprocessed to realize separation of signal and noise.Additionally,a two-value method is presented to determine the signal boundary and extract interference signal from spectrum.Then,the regression algorithm and the channel occupancy statistical methods are employed to analyze the correlation of signals between equipment area and environment spectrum,then the electromagnetic radiation spectrum of equipment area are identified.The effectiveness and accuracy of this method are verified with tested spectrum coming from Nan Shan 26 m telescope site.More than 94％ of the recognition results are in conformity with the artificial recognition results,indicating that this method has high versatility and accuracy.关键词
现场环境/电磁干扰/回归算法/信号检测/信号识别Key words
on-site/EMI/regression algorithm/signal detection/signal identification分类
信息技术与安全科学引用本文复制引用
袁力,刘奇,孙正文,刘晔,王玥,刘烽,陈卯蒸..现场环境下设备区域电磁干扰检测与识别方法[J].电波科学学报,2017,32(6):650-656,7.基金项目
国家自然科学基金(11473061) （11473061）
973项目(2015CB857100) （2015CB857100）
中国科学院天文大科学研究中心前瞻课题 （）
中国科学院天文台站设备更新及重大仪器设备运行专项经费. （）
