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Application of an improved self-starter to geoacoustic inversion

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2 Author(s)
Cederberg, R.J. ; Naval Res. Lab., Washington, DC, USA ; Collins, M.D.

The self-starter is improved using the operator of the split-step Pade solution. In addition to providing greater stability and being applicable closer to the source, the improved self-starter is an efficient forward model for geoacoustic inversion. It is necessary to solve only O(10) tridiagonal systems of equations to obtain the acoustic field on a vertical array located O(10) wavelengths from a source. This experimental configuration is effective for geoacoustic inverse problems involving unknown parameters deep in the ocean bottom. For problems involving depth-dependent acoustic parameters, the improved self-starter can be used to solve nonlinear inverse problems involving O(10) unknown sediment parameters in less than a minute on the current generation of workstations

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:22 ,  Issue: 1 )