摘要
讨论一种改善ＦＦＴ线性谱精度的方法，应用该方法对代表某谐和分量的谱峰参数进行适当修正，能获得该分量较精确的频率、幅值和相位。计算机模拟试验证明了方法的有效性；频率检测误差小于０．１％，幅度误差小于５％，相位误差低于５°。
A method which can improve the accuracy of FFT linear spectrum is introduced. With this method, the spectrum analysis accuracy of the signal composed of periodical components mainly is of a higher level with the frequency error less than 0.1%, the amplitude error less than 5% and the phase error under 5° above all.
出处
《抚顺石油学院学报》
1996年第4期81-84,共4页
Journal of Fushun Petroleum Institute
关键词
数据处理
信号分析
频谱分析
Data handling
Signal analysis
Spectrum analysis
