Spectral Averaging Techniques for Unsynchronized Waveforms.

Document Type : Research Studies

Author

Department of Communications, Faculty of Engineering, Mansoura University, Mansoura, Egypt.

Abstract

Two algorithms for averaging unsynchronized wave forms are considered; the phase unwrapping and the phase vector techniques. The two techniques employ Fourier analysis and are applied to simulated signals contaminated with random noise. They both achieve a reasonable signal-to-noise ratio improvement and yield an average waveform that is properly positioned close to the ensemble mean delay. However, the phase vector method is shown to have a better performance and to be more convenient for producing an undistorted estimate of the Original waveform. 
 

Main Subjects