Abstract
Geoacoustic inversion is an important but difficult component for shallow water ocean acoustics. There are numerous methods in use to remotely determine bottom and geometric properties in both range-independent and range-dependent situations. While there have been some efforts to combine two-dimensional bottom estimates (range- and depth-dependent inversion slices) calculated around a receiving array into a three-dimensional (range, depth, and azimuthal) image of a region, there is only one approach in existence today, which attempts to determine consistent volumetric bottom properties using multiple arrays and multiple sources. This approach (geoacoustic tomography) will be discussed here (with final improvements via regularization).
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