Abstract:

SWellEX-3 was an experimental study of shallow-water propagation and matched-field processing conducted 10 km off San Diego in July, 1994. Data were recorded on a 64-element, 118-m aperture vertical line array anchored in 200 m of water. A cw source emitting tonals from 53--197 Hz was towed over tracks where the water depth varied from 200--75 m. Examples of range-dependent matched-field processing of this multitone signal using the finite-element parabolic equation program for propagation modeling will be presented.