TY - JOUR
T1 - Role of third order spectrum in maximum likelihood time delay estimation of a random multi-tone signal in noise
AU - Kletter, Doron
AU - Messer, Hagit
PY - 1989
Y1 - 1989
N2 - The authors present the maximum-likelihood (ML) time-delay estimator (TDE) for a special class of non-Gaussian signals, when the radiated signal is a harmonically related random multitone signal. For this case they show that when the signal has a nonzero bispectrum (i.e. in the case of phase coupling), the ML TDE consists of the noncoherent estimator plus an extra processor that is, at least for low SNR, directly related to the signal bispectrum. The performance of the TDE is analyzed by using the Cramer-Rao lower bound, and it is shown that the improved processor is superior.
AB - The authors present the maximum-likelihood (ML) time-delay estimator (TDE) for a special class of non-Gaussian signals, when the radiated signal is a harmonically related random multitone signal. For this case they show that when the signal has a nonzero bispectrum (i.e. in the case of phase coupling), the ML TDE consists of the noncoherent estimator plus an extra processor that is, at least for low SNR, directly related to the signal bispectrum. The performance of the TDE is analyzed by using the Cramer-Rao lower bound, and it is shown that the improved processor is superior.
UR - http://www.scopus.com/inward/record.url?scp=0024905332&partnerID=8YFLogxK
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AN - SCOPUS:0024905332
SN - 0736-7791
VL - 4
SP - 2310
EP - 2313
JO - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
JF - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
T2 - 1989 International Conference on Acoustics, Speech, and Signal Processing
Y2 - 23 May 1989 through 26 May 1989
ER -