电子科技2011，Vol.24Issue(11)：9-12,15,5.
低频电磁信号的频率细化技术
Frequency Refining Technology of Low Frequency Electromagnetic Signals
杨永侠 1田广平1
作者信息
- 1. 西安工业大学电子信息工程学院,陕西西安710032
- 折叠
摘要
Abstract
In the low frequency electromagnetic signal,in order to get the fine structure of a certain spectrum within the narrowband,improve the frequency resolution of spectrum,and meet the requirement of good real-timeness,this paper puts forward the frequency refining technology based on the fast Fourier transform algorithm.Through polyphonic system frequency refinement,we amplify a local spectrum to facilitate fast and accurate analysis for the low frequency electromagnetic signal spectrum.Matlab is used for simulation of the low frequency electromagnetic signal by the method of polyphonic system frequency refinement.The simulation results show that this method is more effective and feasible than the Chirp Z transformation algorithm.关键词
低频电磁信号/频率细化/频谱/复调制细化Key words
low frequency electromagnetic signal/frequency refinement/spectrum/polyphonic system refinement分类
信息技术与安全科学引用本文复制引用
杨永侠,田广平..低频电磁信号的频率细化技术[J].电子科技,2011,24(11):9-12,15,5.
