摘要
通过仿真实验验证了分数阶傅里叶变换可以抑制高斯噪声，检测出chirp信号。通过机械振动实验进一步验证了分数阶傅里叶变换不仅可以分析平稳振动信号，而且分析非平稳振动信号比传统傅里叶变换更客观地表达出信号的频谱，提取出非平稳成分。
Simulation results verify that the fractional fourier transform can suppress gaussian noise and detect the chirp signal. Mechanical vibration experiments further prove that the fractional fourier transform not only analyses stationary signals, but also is more objective to show the spectral characteristics of the signal than that by the traditional fourier transform for analysis of nonstationary signals, and extract non-stationary components.
出处
《计量学报》
CSCD
北大核心
2012年第6期532-535,共4页
Acta Metrologica Sinica
基金
国家自然科学基金（50975098）
