Title :
An Doppler estimators performance losses in the presence of noise and equivocation
Author :
Andreucci, F. ; Camporeale, C.
Author_Institution :
DUNE srl-Ingegeria del Syst., Rome, Italy
fDate :
10/1/1994 12:00:00 AM
Abstract :
Doppler estimation accuracy for current profiling is discussed, with comparison with the Cramer-Rao bound (CRB). The apparent decrease in estimation accuracy at low SNR is introduced by the estimate equivocation, due to noise structure and not accounted by the CRB. The actual error is assessed by analysis and simulations
Keywords :
Doppler measurement; acoustic signal processing; noise; oceanographic techniques; underwater sound; Cramer-Rao bound; Doppler estimators performance losses; SNR; analysis; current profiling; equivocation; estimate equivocation; estimation accuracy; noise; noise structure; simulations; Bandwidth; Correlators; Frequency domain analysis; Frequency estimation; Narrowband; Performance analysis; Performance loss; Phase shift keying; Signal processing; Signal to noise ratio;
Journal_Title :
Oceanic Engineering, IEEE Journal of
