摘要
本文利用软件无线电的思想设计完成了一种语图仪,并针对短时傅里叶变换的窗效应,对其进行了改进。实验证明,改进后的语图时间分辨率和频率分辨率都有了很大的提高。
This paper designs a sort of spectral analyzer utilizing the concept of software defined radio,and find several motheds to solve the window effect of the short time Fourier transform.The experiment proves that both the time resolution and the frequency resolution of spectral are highly improved.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2007年第S1期50-52,共3页
Chinese Journal of Scientific Instrument
关键词
软件无线电
语图仪
短时傅里叶变换
software defined radio
spectral analyzer
short time Fourier transform
