Inversion of bi-stitic reverberation and scattering measurements for seabottom properties

Considerations associated with inversion of hi-static reverberation and scattering data from a three dimensional space are discussed. The Scattering and Reverberation from the Bottom (SCARAB) acoustic propagation and scattering model has been the kernel for the study. This model considers three dimensional, non-plme wave, range independent acoustic signals in botb mono and hi-static source receiver configurations. Due to the computationally expensive problem of computing a reverberative field that includes many hybrid acoustic paths, and the iterative nature of the inverse process, inversion for seabottom properties requires highly effective search parameter space reduction and algorithm optimization. The parameter space reduction and the use of simulated annealing and genetic optimization algorithms are discussed.