ENHANCED SPECTRAL RESOLUTION FFT FOR STEP-LIKE SIGNALS

被引：9
|
作者：
CORMACK, GD
BLAIR, DA
MCMULLIN, JN
机构：
[1] Alberta Telecommunications Research Centre, Alta., Edmonton
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1991年 / 40卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1109/19.69945
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A method is presented for obtaining a sampled Fourier transform of a step-like signal with a spectral resolution greater than previously reported. The method is related to zero-padding which is used for enhancing the spectral resolution of an FFT of a limited duration signal. This new method involves final-value padding when the extension function outside the observation window is a step, or involves padding with a sampled exponential function when the extension function is a decaying exponential.
引用
收藏
页码：34 / 36
页数：3
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