Acoustic Response of Underwater Munitions near a Sediment Interface: Measurement Model Comparisons and Classification Schemes.

摘要

The overall objective of SERDP MR-2231 is to investigate the use of broadband sonar to detect and classify underwater munitions near a water sediment interface. The research combined at-sea experiments, target scattering models, and the signal processing required to test binary classification (i.e., target versus non-target). Data model comparisons provided validation of finite-element (FE) models. Once validated, FE models are executed to obtain freefield scattering amplitudes, which are used by an acoustic ray model to investigate variations in target scattering geometry and environmental properties. Our central hypothesis is that the environment and the geometry within that environment can alter an acoustic response of a target, so the target-in-the-environment-response (TIER) must be taken into account during the development of robust detection and classification strategies.