现代电子技术2012，Vol.35Issue(3)：115-118,4.
加窗离散傅里叶变换性能分析和比对
Performance analysis and comparison of windowed discrete Fourier transform
汪伟 1谢皓臣 1梁光明 1刘东华1
作者信息
- 1. 国防科学技术大学电子科学与工程学院,湖南长沙410073
- 折叠
摘要
Abstract
The common method for digital signal processing is discrete Fourier transform (DFT). However, there is a certain error for spectrum analysis due to truncation of time field signal by window function. There are different effects for signal spectrum with different window functions. Comparison and suitability analysis for the characteristics of five common window functions are provided. Appropriate window function should be chosen based on the feature of signal and requirement of processing and goals to reduce the influence of spectrum leakage and fence effect to signal analysis. The conclusion is proved by simulation results.关键词
数字信号处理/离散傅里叶变换/窗函数/频谱泄露/栅栏效应/频谱分析Key words
digital signal processing/ DFT/ window function/ spectrum leakage/ fence effect/ spectrum analysis分类
信息技术与安全科学引用本文复制引用
汪伟,谢皓臣,梁光明,刘东华..加窗离散傅里叶变换性能分析和比对[J].现代电子技术,2012,35(3):115-118,4.
