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The estimation of the shape of an array using a hidden Markov model

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4 Author(s)
Quinn, B.G. ; Maritime Oper. Div., Defence Sci. & Technol. Organ., Salisbury, SA, Australia ; Barrett, R.F. ; Kootsookos, P.J. ; Searle, S.J.

A hidden Markov model (HMM) technique for the estimation of the shape of a towed array is presented. It is assumed that there is a far-field source radiating sound containing possibly weak spectral lines. The technique uses either the Fourier coefficients at a given frequency computed from a single time block or the maximal eigenvector of a sample spectral covariance matrix. The technique is illustrated using several simulations. The results of these simulations indicate that the HMM technique yields shape and bearing estimates more accurate than those provided by a maximum-likelihood array shape estimation technique

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:18 ,  Issue: 4 )

Date of Publication:

Oct 1993

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