Nonlinear Inversion from Nonlinear Filters for Ocean Acoustics
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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The long term goals of this research are to develop practical and efficient algorithms for application the nonlinear inversion problems encountered in ocean acoustics. Such algorithms would be used for estimating or accounting for the effects of the environment on acoustic propagation, detection and tracking in shallow water. The specific objectives of this research are adapt a specific nonlinear filter, known as a Daum filter, for acoustic inversion of shallow water environmental properties, and to assess the performance of this nonlinear filter relative to local linear inversion on the one hand and global methods, e.g. Monte Carl methods on the other hand.