Title :
SNR analysis of time-frequency distributions
Author :
Mu, Weifeng ; Amin, Moeness G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA
Abstract :
The SNR analysis has been widely used to evaluate the performance of time-frequency (t-f) distributions. Often the SNR is defined at a specific t-f location or using the averaged variance over the entire t-f domain. In this paper, a new SNR measure is provided based on averaging along the signal t-f signature and its properties for linear FM signals are delineated. It is shown that the SNR increases for increased integration range, and is not highly sensitive to the FM sweeping rate
Keywords :
Gaussian noise; frequency modulation; integration; signal processing; statistical analysis; time-frequency analysis; white noise; FM sweeping rate; SNR analysis; averaged variance; averaging; integration range; linear FM signals; performance; t-f location; time-frequency distributions; Frequency modulation; Gaussian noise; Kernel; Noise measurement; Performance analysis; Performance evaluation; Sensor arrays; Signal to noise ratio; Time frequency analysis; Working environment noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
0-7803-6293-4
DOI :
10.1109/ICASSP.2000.859042
