Bearing estimation of a sound source in a shallow water channel

Chouhan, H. M. ; Anand , G. V. (1989) Bearing estimation of a sound source in a shallow water channel 4th IEEE Region 10 International Conference, TENCON-89, Bombay . pp. 259-262.

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Official URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arn...

Related URL: http://dx.doi.org/10.1109/TENCON.1989.176936

Abstract

A solution to the problem of bearing estimation of multiple sound sources in a shallow ocean waveguide is developed. A planar array of N vertical columns of Q hydrophones each is used. Each vertical column is used as a mode-filter to extract the same normal mode from among the many propagating in the waveguide. It is shown that a two-column planar array used in conjunction with a delay-and-sum array processor would suffice to estimate the source bearing. When multiple sources are present, the use of a high resolution spectral estimation technique in place of the simple delay-andsum array processor provides unbiased estimates. Computer simulation results using the MUSIC method with a planar array in a waveguide tiith a rigid bottom are presented.

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