Title :
Time delay estimation with low signal to noise ratios
Author :
Chan, Y.T. ; Yansouni, P. ; Crozier, S.
Author_Institution :
Royal Military College of Canada, Kingston, Ontario, Canada
Abstract :
Time delay estimation via cross-correlation exhibits a nonlinear phenomenon in which estimator performance deteriorates rapidly below a certain signal to noise ratio (SNR). This is a consequence of the large variances associated with estimating cross-correlation functions at low SNRs. A method for predicting the estimator behaviour at low SNR´s, together with experimental results to confirm its validity, are given.
Keywords :
Analysis of variance; Analytical models; Delay effects; Delay estimation; Educational institutions; Predictive models; Random processes; Signal processing; Signal to noise ratio; Sonar applications;
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '84.
DOI :
10.1109/ICASSP.1984.1172387
