来源:
《安全与电磁兼容》2012年第13期
作者:丁丁
电磁干扰测量中的实时分析技术
Real-time Analysis Technique Used in Electromagnetic Interference
Measurements
摘要 阐述了电磁干扰测量中实时测量的概念、实时测量在实现方面的特殊技术,包括并行处理、FFT 重叠采样和加窗技术,并介绍了实时测量结果瀑布图和余辉图的呈现方式。
关键词 实时分析;电磁干扰;快速傅里叶变换;并行处理;重叠采样;瀑布图;余辉图
Abstract The concept of real-time analysis in electromagnetic interference measurement
is introduced, as well as its technical implementation methods which are parallel
processing, FFT overlapping sampling and windowing. Finally, the different patterns of
manifestation are illustrated as spectrogram and persistence spectrum.
Keywords real-time analysis; EMI; FFT; parallel processing; overlapping sampling;
spectrogram; persistence spectrum