Title :
The maximum likelihood estimator for acoustic synthetic aperture processing
Author :
Nuttall, Albert H.
Author_Institution :
US Naval Underwater Syst. Center, New London, CT, USA
fDate :
1/1/1992 12:00:00 AM
Abstract :
The maximum likelihood estimator of source amplitude, bearing, and frequency for a moving towed line array of equispaced elements is discussed. A two-dimensional search in equivalent phase and frequency variables is found to yield the best estimates of the unknown parameters. Application to a physical experiment and comparison with the Cramer-Rao bound verify the unity of the approach
Keywords :
acoustic signal processing; parameter estimation; sonar; underwater sound; Cramer-Rao bound; acoustic synthetic aperture processing; equispaced elements; maximum likelihood estimator; moving towed line array; signal processing; sonar; source amplitude; source bearing; source frequency; two-dimensional search; underwater acoustics; Acoustic arrays; Covariance matrix; Delay; Frequency estimation; Helium; Maximum likelihood detection; Maximum likelihood estimation; Phase estimation; Sonar equipment; Yield estimation;
Journal_Title :
Oceanic Engineering, IEEE Journal of
