PAK vol. 54, nr 12/2008 ------------------------------------------------------------------------------- 860

Simulation analysis of random errors of time
delay estimation by cross-correlation and
phase methods

The paper presents result of comparative analysis of random errors of the
time delay estimation (TDE) using cross-correlation analysis and phase of
power density distribution. The simulation shows, that for low level of
signal-to-noise-ratio (SNR) the statistical errors of TDE based on crosscorrelation
analysis are less than one delivered by the phase method.
However the last one is more efficient for higher SNR then the crosscorrelation
and may be applied to any selected harmonics.
Keywords: time delay estimation, cross-correlation analysis, phase of
power density distribution, statistical errors