Title :
Bias in magnitude-squared coherence estimation due to misalignment
Author :
Carter, G.Clifford
Author_Institution :
Naval Underwater Systems Center, New London, CT
fDate :
2/1/1980 12:00:00 AM
Abstract :
This correspondence reviews the interpretation of the coherence function and provides a derivation for bias of coherence estimates due to misalignment. The derived expression is compared with previous results. It is shown that subsequent processing of underwater acoustic signals from a recent experiment corroborates the derived results for coherence estimation bias.
Keywords :
Autocorrelation; Degradation; Delay effects; Delay estimation; Fast Fourier transforms; Frequency estimation; Government; Protection; Signal resolution; Underwater acoustics;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
DOI :
10.1109/TASSP.1980.1163364
