Title :
Time-Frequency Distribution Based on Bi-directional Gaussian kernel and its application in instantaneous frequency estimation
Author :
Li, Jiaqiang ; Jin, Ronghong ; Wang, Wei ; Geng, Junping ; Rui, Xianyi ; Yang, Guomin
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ.
fDate :
Aug. 31 2006-Sept. 1 2006
Abstract :
In this paper, a kernel based on bi-directional Gaussian function is proposed to compute time-frequency distribution (TFD) of non-stationary signals. By controlling two parameters of the kernel in time lag and frequency lag directions, the new distribution makes a good improvement in time-frequency resolution and avoids the influence of cross terms. The application in instantaneous frequency (IF) estimation also demonstrates the distribution effective. Simulation results show that the TFD has good performance
Keywords :
Gaussian distribution; frequency estimation; signal resolution; time-frequency analysis; TFD; bidirectional Gaussian kernel function; instantaneous frequency estimation; time-frequency distribution; Application software; Bidirectional control; Computer simulation; Distributed computing; Energy resolution; Frequency estimation; Kernel; Signal resolution; Time frequency analysis; cross terms; instantaneous frequency estimation; time-frequency distribution;
Conference_Titel :
Communications, 2006. APCC '06. Asia-Pacific Conference on
Conference_Location :
Busan
Print_ISBN :
1-4244-0573-4
Electronic_ISBN :
1-4244-0574-2
DOI :
10.1109/APCC.2006.255954
