摘要
本文提出了一种新的高效快速高分辨率频谱（细化）分析原理和方法─基于带通信号采样原理的快速细化（ＢＳＳＦＺ）方法。这种方法不存在目前国内外常用模拟细化方法中由于分解处理引起的谱失真现象，同时，基本解决了目前常用数字细化方法中存在的计算量大、中间数据多、实时处理困难等问题，有利于信号分析仪用数字方法或模拟方法实现快速频率细化功能，这在动态信号处理和工程上各类对象的监测、诊断、预测等方面有广阔的应用前景。
A novel efficient principle and method for fast zoom FFT analysis-theBandpass Signal Sampling Fast Zoom (BSSFZ) FFT is proposed in this paper. When usingthe commonly employed complex modulation zoom FFT, you cannot completely eliminate thefrequency distortions from the zoom FFT spectrum because the bandpass signal must be decomposed into inphase and quadrature components, comparatively, there are no frequencydistortions in the zoom FFT spetrum by using BSSFZ analogue method. BSSFZ digitalmethod solves the problems of large quantities of computation and storage, difficulty to process on line, etc., which will meet by using the commonly employed zoom FFT digitalmethod. So, this new way to do zoom FFT must be widely used in dynamic signal processing, condition monitoring, fault diagnosis and predictoin.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
1996年第6期566-571,共6页
Chinese Journal of Scientific Instrument
