摘要
该文研究了从噪声中恢复原瞬态信号问题。根据瞬态信号和噪声的Gabor系数在时-频平面上分布不同的特点,借用假设检验理论,提出了一种恢复被噪声污染的原瞬态信号的Gabor级数方法,进行了计算机仿真和对实际信号的处理。
In this paper, the recovery of transient signals embedded in noise is studied. It is noticed that there is different feature between the transient signal's Gabor coefficients and the noise's Gabor coefficients distributed in time-frequency plane, the Gabor series method is presented for recovering transient signals embedded in noise in terms of hypothesis test theory. The computer simulation is implemented for exponential transient signal. This method is also used to process real-life signals.
出处
《电子与信息学报》
EI
CSCD
北大核心
2001年第5期425-430,共6页
Journal of Electronics & Information Technology
基金
雷达信号处理国防科技重点实验室基金
关键词
Gabor级数
信号复原
噪声
瞬态信号
信号处理
Time-frequency distribution, Gabor series, Signal recovery, Noise elimination
