Seabed Imaging System

Acoustic imaging is the preferred modality for mine detection. However, acoustic images are noisy and difficult to interpret due to acoustic clutter, the interaction of sound with the seafloor, and potential penetration of sound into the sediment with subsequent reflection. Creare is developing a Seabed Imaging System (SIS) capable of providing detailed information on both the topography and composition of the seafloor. The SIS is intended to be mounted on an autonomous underwater vehicle (AUV) to provide data that can be used to supplement and constrain acoustic performance models. Data from the SIS will assist in estimating sonar penetration depth and the magnitude of acoustic image degradation due to clutter.The Creare SIS provides fully automated data processing and balances the need for high spatial resolution with low power consumption. The small footprint of the system facilitates mounting in the REMUS 600 AUV. During Phase II we will develop a fully functional version of the system and perform testing in the laboratory and in a series of open-water environments. Final system performance will be demonstrated during autonomous bottom surveys with the REMUS 600.