STFT

作品数：264被引量：965H指数：13
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Linear FM Signal Parameter Estimation Using STFT and FRFT被引量：8
《Chinese Journal of Electronics》2013年第2期301-307,共7页SHEN Liran YIN Qingbo LU Mingyu ZHANG Qi GUO Lili SHEN Tianen ZHAO Guoku NING Shushi 
This work is supported by the National Natural Science Foundation of China （No.60803087, No.61073133） and Heilongjiang Postdoctoral Grant （No.LRB08362）, and is supported partly by the Fundamental Research Funds for the Central Universities of China （No.2011QN027, No.2011QN126, No.2011ZD010, No.2012TD031）, and by Science and Technology Planning Project of Dalian City （No.2011A17GX073, No.2010E15SF153）.
A new method, TrTF-FrFT, is introduced for parameter estimation of Linear frequency modulated （LFM） signals, which consists of a coarse search and a fine search. In the initial stage, the window length for Short tim...
关键词：Linear frequency modulated signal Frac- tional Fourier transform Parameter estimation Short time Fourier transform. 
Doppler Frequency Extraction by Curve Detection in Time-Frequency Map
《Chinese Journal of Electronics》2005年第4期727-730,共4页HOU Shujuan MA Shufen WU Siliang 
This paper proposes a novel method of Doppler frequency extraction for Doppler radar scoring systems. For the time-frequency map of radar echo signal can show how the missile＇s Doppler frequency varies along the time...
关键词：Doppler frequency extraction Time-frequency analysis Short time fourier transform （STFT） Curve detection Randomized hough transform （RHT） 
Relations of FM^mlet Transform to Some Integral Transforms被引量：1
《Chinese Journal of Electronics》2004年第2期278-282,共5页ZOUHongxing DAIQionghai WANGDianjun LIYanda 
In this paper, we explore the relationships between FM^mlet transform and some of the existing integral transforms, namely, the chirplet transform, dispersion transform, wavelet transform, chirp-Fourier transform, Sho...
关键词：积分变换 子空间 信号表示法 调频变换 STFT 
Radar Detection of Range Migrated Weak Target Through Long-Term Integration被引量：27
《Chinese Journal of Electronics》2003年第4期539-544,共6页MOLi WUSiliang LIHai 
A long-term integration method for weak target detection is proposed, which is based on Hough transformation. The method is able to integrate target return for a very long time period (even up to tens of seconds) by m...
关键词：长期综合 弱目标检测 排列决定单元 移动目标 SNR STFT 雷达检测 
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