Acoustic Inversion and 3-D Studies Employing Acoustic Vector Sensors in Shallow Water

摘要

The goals of this research included the study of the effects of three-dimensional (3-D) environmental variability on the flow of energy in the complex intensity field, and the development of algorithms for environmental assessment based on measurements of the acoustic vector field. In the former case, the fully 3-D forward problem was modeled in order to gain a deeper understanding of the impact of shallow water features, such as solitons, on the propagation of acoustic energy. In the latter, inversion routines based on meta- heuristic approaches (e.g., simulated annealing) and more sophisticated models that directly incorporate the vector field into adjoint type methods were investigated to determine the general improvements in environmental assessment with the addition of information on the complex acoustic vector field.