DocumentCode
508525
Title
The optimal window length of STFT for sine modulated signal
Author
He Si-san ; Zhao Hui-ning ; Zhou Jian-xiong ; Cheng Xiao ; Fu Qiang
Author_Institution
ATR Lab., Nat. Univ. of Defence Technol., Changsha
fYear
2009
fDate
20-22 April 2009
Firstpage
1
Lastpage
3
Abstract
The short-time Fourier transform (STFT), whose resolution depends on the window length, is the most frequently used time frequency representation to analyze signal with time-varying frequency content. The formula of calculating the optimal window length for sine modulated signal is deduced to make the maximal local bandwidth of the spectrogram reaches the minimal value. The results of some typical windows are calculated. Simulated results verify the correctness of the deduced formula.
Keywords
Fourier transforms; radar resolution; signal representation; STFT optimal window length; radar resolution; short-time Fourier transform; sine modulated signal representation; spectrogram bandwidth; time-varying frequency analysis; STFT; micro-Doppler; rotation; window length;
fLanguage
English
Publisher
iet
Conference_Titel
Radar Conference, 2009 IET International
Conference_Location
Guilin
ISSN
0537-9989
Print_ISBN
978-1-84919-010-7
Type
conf
Filename
5367388
Link To Document